Спутник ФКИ. ICESat. [Редактировать]

ICESat, один из спутников НАСА предназначенный для дистанционного зондирования Земли, предназначался для проведения измерний объемов льда на планете, частиц и аэрозолей в атмосфере, измерения растительного покрова.  Он проработал 7 лет и был затоплен в феврале 2010 года после того как отказала полезная нагрузка и НАСА не смогло ее перезапустить. 

Дополнительные наименования

#НаименованияПоиск в новостяхПоиск в документах
1Ice, Cloud, and Land Elevation SatelliteНайтиНайти
227642НайтиНайти

Дополнительная классификация

#Наименования
1Тип оператора(владельца) - государственный
2Страна оператор(владелец) - США
3Страна производитель - США

Новостная лента[Найти информацию в новостях] [Найти информацию в документах]

#Новостная лента.
12003-07 - 2003-08. Один из трех бортовых лазеров отказалТэги: ICESat

Технические характеристики

#ХарактеристикаЗначение
1Масса, кг970
2Масса (полезная нагрузка), кг302
3Масса (платформа), кг580
4Масса (топливо), кг76
5Емкость запоминающего устройства (для научных данных), ГБит56
6Емкость запоминающего устройства (для телеметрии), мБит в секунду256
7Платформа 1xBCP-2000
8Мощность солнечных батарей (конец жизни), Вт1962
9Мощность (предоставляемая), Вт696
10Мощность (требуемая), Вт825
11Мощность (полезная нагрузка), Вт350
12Емкость (аккумулятора), ампер часов40
13Точность определения позиции, град<0.006
14Скорость работы полезной нагрузки, мБит в секунду40
15Точность контроля позиции, град<0.006
16Точность позиционирования, метра<<30

Характеристики орбиты

#ХарактеристикаЗначение
1САС, год7
2Дата (сведения с орбиты)2010-08-30

Пусковые характеристики

#ХарактеристикаЗначение
1Код NSSDC2003-002A

Экономические характеристики

#ХарактеристикаДата измеренияЗначение
1Оператор Космическое агентство США
2Производитель Ball Aerospace
3Производитель Ball Aerospace

Информация об удачном запуске

#ХарактеристикаЗначение
1Дата пуска2003-01-13 at 00:45:00 UTC
2Полезная нагрузка 1xICESat
3Полезная нагрузка 1xCHIPS
4Ракета-носитель 1xДельта 2

Найдено 1000 документов по запросу «ICESat». [Перейти к поиску]


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0.14/5
... of cloud fraction between the ICESat lidar and the ECMWF model... of cloud fraction between the ICESat lidar and the ECMWF model... System (GLAS) lidar on the ICESat satellite. In order to account... compared to the ICESat lidar. Lidar forward model and ICESat comparison is... of cloud fraction between the ICESat lidar and the ECMWF model..., Cloud and Land Elevation Satellite (ICESat; Zwally et al. 2002) is... variation of global cloud profiles. ICESat lidar data have been available... make a fair comparison between the ICESat lidar and the ECMWF model... model variables. Processing of the ICESat lidar signal is necessary to... of cloud fraction between the ICESat lidar and the ECMWF model... is the orbit altitude (m) of ICESat. The dimensionless extinction-to-backscatter... extinction coefficient is α (m −1 ). At the ICESat 532 nm wavelength, there is... model and then compared to ICESat data. b. Converting Model Variables to... of cloud fraction between the ICESat lidar and the ECMWF model... that would be measured by ICESat in (a) a 4-km-thick ice cloud... of cloud fraction between the ICESat lidar and the ECMWF model... µ rad 170 µ rad 75 m Table 1: ICESat characteristics relevant to this study... to compare this model to ICESat, should the values of effective... of cloud fraction between the ICESat lidar and the ECMWF model... October 2003, chosen as the ICESat latitude-altitude analysis showed cloud..., allowing a direct comparison between the ICESat lidar and the ECMWF model... time and space) to the ICESat track are extracted. The horizontal... available at 3-hour intervals. The ICESat track points are arranged into... the closest ECMWF data available. ICESat points between 00 UTC and... UTC model analysis, and the ICESat points between 0130 UTC and... the following day. Once the ICESat points have been grouped in... model profiles closest to the ICESat ground track are extracted, containing... of cloud fraction between the ICESat lidar and the ECMWF model... variables interpolated on to the ICESat height grid. i. Cloud Fraction Resampling... model with cloud fraction from ICESat, the cloud fraction data are... threshold (minimum detectable backscatter of ICESat, shown in in table 1) is... of cloud fraction between the ICESat lidar and the ECMWF model... of cloud fraction between the ICESat lidar and the ECMWF model... of cloud fraction between the ICESat lidar and the ECMWF model... −45 −40 0 Figure 4: Processing of ICESat lidar data for the same... m above the surface. b. Averaging of ICESat Backscatter Data To compare backscatter... model and backscatter from the ICESat lidar, ICESat profiles which correspond to... maintaining the ICESat vertical resolution. Figure 4 shows the processing of ICESat lidar... model grid selecting and averaging ICESat 5 Hz rays to the nearest... due to the grouping of ICESat 5 Hz (1.2 km) rays to individual... that corresponded to less than 5 ICESat 5 Hz rays (7 km of ground... km). The maximum distance between ICESat track and model grid points... 2i, with the number of ICESat profiles replacing the sub-columns... model. 4. Results Fifteen days of ICESat observations, from 30 September 2003... where the length of the ICESat track is over 9 million kilometers... than the sensitivity of the ICESat lidar. Cloud fraction is also... ice cloud falling beneath the ICESat sensitivity threshold. • In mid-latitudes... that are made; comparing the ICESat-derived cloud fraction directly with... substantially higher than with the ICESat observations. In particular, the mean... 2003 2359 UTC under the ICESat track. (b) Cloud fraction from the... and the cloud fraction resampled. (c) ICESat cloud fraction data for the... all the signal received at ICESat is purely noise. Frequency of... comparing the thick solid line (ICESat observations) with the thin solid... low, but agrees with the ICESat observations. • Similarly, the tropical frequency... km, but agrees with the ICESat observations otherwise. Frequency of occurrence... thick solid line indicates the ICESat lidar measurements, the thin solid... 20 Height (km) 0.3 0.2 0 Height (km) ICESat Lidar (a) Height (km) Height (km... 60 80 0 Figure 7: Comparison of ICESat lidar and the lidar forward... surface. (a) ICESat lidar mean cloud fraction; (b) ICESat lidar frequency of occurrence; (c) ICESat lidar... Height (km) 0.3 10 0 Height (km) ICESat Lidar (a) Height (km) Height (km... backscatter can drop beneath the ICESat sensitivity threshold, but β WP will... is underestimating the backscatter from ICESat above 10 km by a factor... model) to that derived from ICESat. Using a cloud fraction threshold of... 90 −6 −4 10 0 −6 10 10 −4 10 ICESat ECMWF ECMWF error bars Figure... present (bottom row) taken from ICESat and the ECMWF model over... less) cloud falling within the ICESat sensitivity threshold. Frequency of occurrence... model and observations from the ICESat lidar over a 15 day period... long-term measurements with the ICESat satellite. However, due to the... thin clouds over Europe using ICESat lidar spacebourne observations, Mon. Weather..., S. Palm, J. Spinhirne, and R. Thomas, 2002: ICESat’s laser measurements of polar ice...



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0.13/5
... Isostatic Adjustment in Greenland Using ICESat and GPS Observations Nielsen, Karina... Isostatic Adjustment in Greenland Using ICESat and GPS Observations. In C. Rizos... Isostatic Adjustment in Greenland Using ICESat and GPS Observations Karina Nielsen..., Cloud and land Elevation Satellite (ICESat) data in three overlapping time... the temporal behavior of the ICESat-based modeled elastic response agrees... constraining GIA. Keywords GIA • GPS • ICESat • Elastic uplift • Greenland 1 Introduction The... mass change grids derived from ICESat data using the methodology described... Isostatic Adjustment in Greenland Using ICESat and GPS Observations a uplift in... QAQ1 20 0 −20 2004 2005 ICESat The Geoscience Laser Altimeter System... al. 2005) on board the ICESat satellite repeatedly measured the elevation... of rigid planes to the ICESat measurements and assuming a constant rate... changes such as firn compaction, ICESat inter-campaign elevation biases and... deriving mass change grids from ICESat data is described in detail...–2009. This analysis shows that ICESat data can resolve temporal mass... on loading models derived from ICESat 328 K. Nielsen et al. Table... ice mass loss. The 5 5 km ICESat mass changes grid cells are... loading models are based on ICESat data as described in Sørensen... relatively short observation period of ICESat. This is the first time... Isostatic Adjustment in Greenland Using ICESat and GPS Observations 2004−2007... the individual sites based on ICESat data have been used in... in the elastic uplift signal. ICESat data has a lower resolution in... up to 30 km, hence ICESat might not be able to... by combining ICESat and ASTER data, compared to only using ICESat data... captured by the resolution of ICESat, which might explain the under... elastic rebound models, derived from ICESat data, captures the main part... due to the resolution of ICESat. From analyzing the temporal changes... missions such as CryoSat-2 and ICESat-2 will enable us to extend... altimeter system (GLAS) on the ICESat mission: on-orbit measurement performance... ice volume loss from combined ICESat and ASTER observations. Geophys Res... Isostatic Adjustment in Greenland Using ICESat and GPS Observations Spada G, Stocchi... regional sea level changes from ICESat observations and GIA modelling. Geophys... ice sheet (2003–2008) from ICESat data the impact of interpolation... T, Minster J, Spinhirne J, Thomas R (2011) GLAS/ICESat L2 Antarctic and Greenland ice...



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0.15/5
... Dynamics of Ice (DESDynI) and ICESat-2 satellite missions. The goal of...-interfaces.          Figure 1. (Left to Right) ICESat GLAS satellite, LVIS high-altitude... standard web service layers for ICESat/GLAS at the NSICD and... Satellite (ICESat-2) is a planned follow-on to the currently operating ICESat mission...). The focus of the ICESat-1 and ICESat-2 missions is monitoring elevation changes... spaceborne LiDAR from the NASA ICESat Geoscience Laser Altimeter System (GLAS...) portal. Unlike the full waveform ICESat and LVIS systems, the NASA... handling such data. System Altitude ICESat/GLAS 600km Footprint Diameter/ Location... archive data from LVIS and ICESat/GLAS. Improving knowledge of NASA... of especially, the ICESat data sets. In the ICESat case, the data.... As a further complicating factor, the ICESat products have been distributed in... data products, utilization of the ICESat data is notoriously difficult which... community. Beyond difficulties accessing the ICESat data, understanding the significance of... them. In the case of ICESat, there are parameters related to... improve the of LVIS and ICESat point cloud and waveform products..., enabling use of LVIS and ICESat data directly within the OpenTopography... QC parameters for LVIS and ICESat will be added as user... ICESat-1 and LVIS by that community, and preparation for use of ICESat... data distributed from ICESat and to provide data from ICESat and LVIS.... See http://nsidc.org/data/icesat/data_releases.html for details. The... format utilized to deliver both ICESat and LVIS data to the... and services for satellite LiDAR (ICESat) and high altitude airborne LiDAR... data services and workflows (blue). ICESat Data System at the NSIDC...-available products generated by the ICESat GLAS ground system. This includes... and Antarctica derived from GLAS/ICESat laser altimetry profile data. Data... subsetting is available for select ICESat/GLAS data products via a web... VISAGE (http://nsidc.org/data/icesat/visge/) under separate funding. NSIDC...-processed DEM tiles generated from ICESat data (accessed via http links... more continuously acquired data from ICESat/GLAS, LVIS data are collected... proposed for the pre-processed ICESat DEMs. UNAVCO will work with... data such as the NASA ICESat and LVIS data is a web... standard operations and attributes for ICESat/GLAS and LVIS archives building... NLAS web service Process all ICESat data to LAS format Present... of the data quality of ICESat/GLAS and LVIS LiDAR data... – 194. Harding, D.J., and C.C. Carabajal, 2005, ICESat Waveform Measurements of Withinfootprint Topographic..., and B. E. Schutz (2008), Characterization of ICESat/GLAS waveforms over terrestrial ecosystems... J. P. DiMarzio (2005), Overview of the ICESat Mission, Geophysical Research Letters, 32..., B. Minster, J. Spinhirne and R. Thomas, 2002, ICESat's laser measurements of polar ice...



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0.1/5
..., Cloud, and land Elevation Satellite (ICESat), a mission dedicated to cryosphere studies... next opportunity would be the ICESat-2 mission scheduled for launch in... satellite altimetry (Envisat, Jason-2, and ICESat), optical remote sensing (Landsat), radar... of this twin lake, with ICESat Glacier Inventory (RGI) [19]; and... of this twin lake, with ICESat actual ground actual tracks ground... altimetry used here is the ICESat mission operated from 2003 to... diode failure soon after launch, ICESat could not be operated continuously... with inter-annual cycle. The ICESat data used here is released..., such as nominally more accurate ICESat estimates. ICESat finished a total of 35... worth mentioning that since the ICESat data spanning before and after... sampled time series, we selected ICESat points within ˘5 days of TIAS.... A temporal comparison between TIAS and ICESat results is shown in Figure... the up-pointing triangle means ICESat measurement from Chibuzhang Co and... of TIAS performance, while treating ICESat as reference data, is shown... estimates correlate very well with ICESat measurements with a RMSD at 0.30... the up-pointing triangle means ICESat measurement from Chibuzhang Co and... of TIAS performance, while treating ICESat as reference data, is shown... estimates correlate very well with ICESat measurements where the arrow means... analysis. nominally more accurate estimates. ICESat finished a total of 35 usable... worth mentioning that since the ICESat data spanning before and after... sampled time series, we selected ICESat points within ±5 days of TIAS.... A temporal comparison between TIAS and ICESat results is (a) (b) (c) Figure 4. Time series... line Dorsoidong Co, respectively) and (a) ICESat measurements (blue triangle in and...); (blue and (c) Envisat. Co, respectively) (a) ICESat measurements triangle in Chibuzhang and... water level, Chibuzhang Dorsoidong TIAS ICESat Jason-2 Envisat even though an... 5. Exemplified last cycle of this ICESat 0.42/0.98 – N/A 0.54/0.93 study... Jason-2 is a bit higher than ICESat, with RMSD at 0.49 m For...-2 has no overlap with the ICESat time series, it is difficult... height measurements. Hence, the difference ICESat 0.42/0.98 -- RMSD at N/A between... Jason-2 is a bit higher than ICESat, with 0.49 m0.54/0.93...-2 has no overlap with the ICESat time0.48/0.94 series, it... the comparison with ICESat and in the comparison with ICESat and Jason... the water levelvalues, estimate this ICESat and Jason-2, are in 0.30... RMSD values, as compared with ICESat and Jason-2, are in 0.30... with other measurements, such as ICESat, Jason-2, and Envisat, we observe..., C.A.; Hancock, D.; DiMarzio, J.P. Overview of the ICESat mission. Geophys. Res. Lett. 2005... altimeter system (GLAS) on the ICESat mission: On-orbit measurement performance...



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0.09/5
... the laser instrument on the ICESat satellite (GLAS; the Geoscience Laser...) the laser altimeter (GLAS) on ICESat. In addition, we use data... as blue triangles in Figure 4. ICESat was launched in 2003 and... et al., 2002]. We use ICESat data (release 31) from 14... in Sørensen et al. [2011]. ICESat repeat tracks are shown in... approach for laser altimetry (ATM, ICESat) differs from that for....: INTERPOLATION OF ELEVATION CHANGE For ICESat, several approaches have been used...; Slobbe et al., 2008]. Because ICESat tracks almost never exactly repeat... project all elevation footprints (for ICESat) or platelet centers (for ATM... including all available data). For ICESat, the spatial pattern of overall... datasets and time periods. For ICESat, typically about 25% of data... thinning rate as derived from ICESat, on the other hand, was... 1999–2008 (2003–2008 for ICESat), but they were also calculated... ICESat era has a limited number of measurements. After 2003, when many ICESat... coverage of ERS-2 compared to ICESat, many areas have coverage for... from the satellite data only (ICESat and ERS-2), as we intend... ERS-2 and 2003–2008 for ICESat. Data before 1999 were excluded..., as are input (ERS-2 and ICESat) and val- D R A F T May 29, 2012... neither ERS-2 nor very many ICESat measurements are available for 2003... (typically the middle of the ICESat era and in the case...-2 coverage and the beginning of ICESat coverage. Because 3-year running windows... such as CryoSat-II and ICESat-2 coverage over outlet glaciers will... Altimeter System (GLAS) on the ICESat mission: on-orbit measurement performance... ice volume loss from combined ICESat and ASTER observations, Geophys. Res... of Greenland’s ice sheet from ICESat data using overlapping footprints, Remote... Greenland ice sheet (20032008) from ICESat data – the impact of interpolation...–527. Zwally, H., et al. (2002), ICESat’s laser measurements of polar ice..., J. Spinhirne, and R. Thomas (2010), GLAS/ICESat L1B Global Elevation Data V031... (clockwise from upper left) ATM, ICESat, ICESat+ERS-2, and all sensors. For... 1999–2008 (2003–2008 for ICESat, 1999–2003 for ERS-2). Lines...–2008. Locations of ERS-2 and ICESat measurements are shown in (a), and.../dt from all instruments. ATM ICESat ERS-2 All ρ N ρ N ρ N ρ N 1994 0.73 64... number of measurements (N ), for ATM, ICESat, ERS-2, and all data combined...



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0.15/5
..., September 12-14, 2007, Finland ICESAT FULL WAVEFORM ALTIMETRY COMPARED TO... waveform; DTM; AHN; Laser altimetry; ICESat. ABSTRACT: Since 2003 the spaceborne..., Cloud and land Elevation Satellite (ICESat) has acquired a large world-wide... database allows us to compare ICESat to AHN elevation profiles with... allows us to determine improved ICESat profiles. Comparing the improved profiles..., Cloud and land Elevation Satellite (ICESat) was launched separated into vegetation... Normaal Amsterdams Peil) (RDNAP, 2003 ICESat has acquired a huge database of... full waveform as a result of ICESat GLA14 data to profiles derived.... As most improvement is The ICESat GLA14 elevation data are obtained... complex terrain, comparison results GLA01 ICESat full waveform data with the...−10−2003 ' "' Figure 1. Study area: ICESat ground tracks (magenta) displayed with... ICESat footprints filled with AHN points are shown. 2.2 Figure 2. Principal of ICESat... European reference system (Hazeu, 2003). 2.3 & 2.3.1 ICESat data overview: Among 15 GLAS... stored in the GLA05. This ICESAT/GLAS GLAS uses a laser altimeter... of AHN data A 70m-diameter ICESat footprint contains approximately 700 AHN... elevation profiles of AHN and ICESat data. To avoid effects of... of a laser altimeter vector, L, and a ICESat/GLAS geocentric vector, G, with respect... the orbit position of the ICESat satellite with respect to the... ICESat footprint ellipse. This mean elevation is then subtracted from the ICESat... difference. In this study, six ICESat tracks or six elevation profiles... 1 for an overview of the ICESat tracks. The differences over the... in Figure 3. For comparison between ICESat and AHN, both data sets... GLA14 footprint ellipses. Because the ICESat footprint has an approximate diameter... to a representative elevation point. For ICESat two profiles are determined, one... ICESat GLA14 data (red line), AHN data (black squared line) and ICESat... red box in Figure 1. • Many ICESat pulses of the 24-10...-11 Total In Figure 5, the ICESat GLA14 elevation is represented by... the ground elevation in the ICESat data (red circle). Finally the... 290 1588 Table 1. Number of ICESat waveforms used: F (Forest), U (Urban), B (Bare... missing AHN data. 4.2 4 Number of ICESat waveforms F U B W Total 72 158 456... used The waveforms from six ICESat tracks are assigned to different.... On average, 97% of the ICESat measurements to the ground were... elevation data and AHN (a) 0 the ICESat track of October 16, 2003... 3 shows the differences between the ICESat last mode or ‘ground elevation... bottom image shows that the ICESat ‘ground elevation’ profile (in cyan... the ICESat ‘mean elevation’ profile. It is also visible that the ICESat... AHN laser points within the ICESat footprint will result in a mean... that are considered, the ICESat ‘mean elevation’, the ICESat ‘ground elevation’ and... so large that the visible ICESat ground return is ignored by... in the third example the ICESat ground return is totally absent... the ICESat ‘ground elevation’ gives clearly a better value than the ICESat ‘mean... (black) precisely match to the ICESat raw full waveform (red) and... AHN ground points within the ICESat 70m footprint. The peak of...: Figure 7(c) shows a case where the ICESat waveform shows only one mode... this case the ICESat ‘mean elevation’ and the ICESat ‘ground elevation’ are... ICESat (GLA14) ICESat (GLA01) AHN Water Bare1313 1314 1315 1316 1317 1318 ICESat(GLA14) − AHN ICESat(GLA01) − AHN Fricker, H. A., Borsa..., K. and Bills, B., 2005. Assessment of ICESat performance at the salar de... Lindenbergh, R., 2006. Analysis of repeated ICESat full waveform data: methodology and... for the remaining differences between ICESat ground elevation’ profiles and the... directions: those footprints were the ICESat waveform shape match the shape... to assess the accuracy of ICESat georeferencing. On the other hand... improved. Harding, D. J. and Carabajal, C. C., 2005. ICESat waveform measurements of within-footprint...) and height differences (middle) of ICESat, GLA14 and GLA01-derived elevations... cases. At the bottom the ICESat footprints overlaid on a Google Earth... question. ICESat/GLAS Data at NSIDC, http://nsidc.org/data/icesat/faq... AHN, and two based on ICESat data. NASA provides height data... ICESat waveform. By considering the position of the last mode in ICESat... can be obtained from the ICESat data that is on average... deviation of ±1.1m. Zwally, J., 2002. ICESat’s laser measurements of polar ice... forest canopy block almost all ICESat laser energy. This gives one...



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0.15/5
..., Cloud and land Elevation Satellite 1 (ICESat-1) of $50–70 m. The Synthetic... of freeboard. p is $2 cm for ICESat-1 (Kwok and others, 2004) and... to the freeboard maps from ICESat that is not reflected in... sea-ice thickness from five ICESat campaigns between 2004 and 2008... a combination of freeboard data from ICESat, snow depth data over first... the eastern Arctic. Results from ICESat laser altimetry over the same... seen in the altimetry data. ICESat provided a broader picture of the... and fall. Data from ten ICESat campaigns between 2003 and 2008... 2007, exhibited a negligible trend. With ICESat, it was possible to estimate..., with the end of the ICESat mission in 2009, this source... in the Weddell Sea from ICESat elevation profiles using snow depth... ice. This study demonstrates that ICESat provides a unique capability for measuring... gap in polar observations between ICESat-1 and ICESat-2 (planned for late 2015..., it is unfortunate that NASA’s ICESat-1 mission ended in 2009. Currently.... Two NASA polar-orbiting missions (ICESat-2 and Deformation, Ecosystem, Structure and... of the science objectives of ICESat-2 (planned launch late 2015) is..., W. and 16 others. 2010. The ICESat-2 laser altimetry mission. IEEE Proc... sea-ice freeboard heights from ICESat and GRACE. Geophys. Res. Lett.../2000JC000469.) Kwok, R. and G.F. Cunningham. 2008. ICESat over Arctic sea ice: estimation....) Kwok, R., H.J. Zwally and D. Yi. 2004. ICESat observations of Arctic sea ice..., R., G.F. Cunningham, H.J. Zwally and D. Yi. 2006. ICESat over Arctic sea ice: interpretation..., cloud, and land elevation satellite (ICESat) over Arctic sea ice: 1140..., H.J., D. Yi, R. Kwok and Y. Zhao. 2008. ICESat measurements of sea ice freeboard...



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0.11/5
... Cloud and Land Elevation Satellite (ICESat) carries a Geoscience Laser Altimetry System... principle . . . . . . . . . . . . . . . . . 36 4.2 Overview of the ICESat laser altimeter mission . . . . . . . . . . . . 37 4.2.1 Measurement... and Outlook . . . . . . . . . . . . . . . . . . . . . . . . . . 106 6 Validation of ICESat Elevations in Churchill, Manitoba 111... thickness from HEM measurements and ICESat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160 7.3.2 7.4 Sensitivity analysis . . . . . . . . . . . . . . . . . . . . . . . . 162 Summary... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 4.1 Laser operational period for ICESat/GLAS since mission launch . . . 43... the total freeboard for 10 ICESat mission phases . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134 7.2 A summary of... of the thickness estimates . . . . . . . . . . . . . 163 A.1 ICESat GLAS-13 record . . . . . . . . . . . . . . . . . . . . . . . . . 190 xi... et al., 2005). . . . . . . . 4.2 33 38 ICESat measurement principle – GLAS measures the...). The ICESat position is determined from the GPS and ICESat orientation and.... . . . . . . . . . . . . . . . . . 66 4.11 The regression of ICESat elevation differences (∆h) and sea level... cycles during February-March 2003 ICESat mission phase. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69 4.12 The... at each ICESat footprint – Spring 2004 epoch (ArcGICE study). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107 6.1 ICESat footprints..., Hudson Bay. ©Google Maps. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117 6.2 ICESat footprints (in red) and leveling... ICESat (blue) near Churchill. ICESat elevations after applying the tide-difference (between ICESat... freeboard during February-March 2006 ICESat phase . . . . . 140 7.5 Sea ice backscatter... Satellite (ICESat). ERS covered only up to 81.5◦ N/S, while ICESat, launched in 2003, provides coverage up to 86◦ N/S. Therefore, ICESat is... thickness estimation procedure? 7. How does ICESat elevations compare with field measurements... derived from ICESat. - In Chapter 4, the description of the ICESat sea ice... satellite missions such ICESat, and the upcoming missions ICESat-2 and Cryosat-2, cover... sea ice freeboard retrieval from ICESat are introduced. 4.1 Radar altimetry measurement... accuracy of ICESat over multiple surface types (Chapter 6). Applications Although, ICESat was... atmospheric aerosol distributions. Mission description ICESat was launched from the Vandenberg...). The ICESat position is determined from the GPS and ICESat orientation and... ICESat tracks and, therefore, this correction reduces those variances. 4.4.6 Snow depth ICESat... for assimilation. Chapter 6 Validation of ICESat Elevations in Churchill, Manitoba 6.1 Motivation... be carried out throughout the ICESat missions. ICESat, and upcoming altimetry missions... the ICESat instrument, but rather to assess the real differences between ICESat... such as ICESat, Jason 1 and 2, and upcoming missions Cryosat-2 and ICESat-2. 6.2 Validation... different ICESat epochs impacted the measured elevation accuracy and precision. The ICESat... and ICESat. Hence, the comparison between the precise leveling measurements and ICESat... compare the ICESat measurements with the field measurements. However, ICESat tracks from... of the ICESat track (i.e., only 20 or less ICESat footprints). The ICESat footprints... ICESat (blue) near Churchill. ICESat elevations after applying the tide-difference (between ICESat... and ICESat measurements were large in (i) topographically complex areas because ICESat did... provide more ICESat 131 footprints for comparison, as more ICESat epochs (and... between ICESat and survey measurements. But, a larger width of the predicted ICESat... from ICESat – Results The sea ice freeboard heights derived from ICESat laser... the ICESat-based thickness 161 Sea ice thickness distribution 0.25 HEM ICESat... from ICESat (blue) and HEM (red). distribution. This is because more ICESat... thickness classes were sampled by ICESat. 162 7.3.2 Sensitivity analysis A sensitivity analysis... from ICESat since 2003 (and, in the future, possibly Cryosat-2 and ICESat... G. Fotopoulos (2007), Assessment of SRTM, ICESat, and Survey Control Monument Elevations...–284. Carabajal, C. C., and D. J. Harding (2005), ICESat validation of SRTM C-band digital... DC. Harding, D. J., and C. C. Carabajal (2005), ICESat waveform measurements of within-footprint.../2000JC000469. Kwok, R., and G. F. Cunningham (2008), ICESat over Arctic sea ice: Estimation..., R., G. F. Cunningham, H. J. Zwally, and D. Yi (2006), ICESat over Arctic sea ice: Interpretation..., C. F., R. H. Thomas, W. B. Krabill, and S. S. Manizade (2005), ICESat range and mounting bias estimation..., J. P. DiMarzio, V. P. Suchdeo, and H. A. Fricker (2006), ICESat Antarctic elevation data: Preliminary precision... ICESat The procedure for deriving the sea ice freeboard heights from ICESat is explained in this section. 1. The ICESat GLAS-13...



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..., Cloud, and land Elevation Satellite (ICESat-2) Soil Moisture Active and Passive..., Cloud, and land Elevation Satellite (ICESat II) [Formulation], EARTH-54 Soil..., Cloud and Land Elevation Satellite 2 (ICESat-2) missions are now planned for... development, while the Ice Satellite 2 (ICESat-2) project will complete KDP-B and... high-temporal resolution, while two (ICESAT, QuiKSCAT) recently ended their main... two Decadal Survey missions (SMAP, ICESAT-2) have accelerated launch readiness dates..., to "bridge the gap" between ICESat and ICESat-2 data. This activity, focusing..., Cloud, and Land Elevation Satellite (ICESat-2) missions will be accelerated for... KDP-C and enter into development; - ICESat-2 will complete KDP-B and initiate..., and Land Elevation Satellite (ICESat) mission, and ICESat-2, which is scheduled to..., to "bridge the gap" between ICESat and ICESat-2 data. This activity, focusing..., Cloud, and land Elevation Satellite (ICESat-II) 38.8 39.2 68.5 116..., Cloud, and land Elevation Satellite (ICESat-II) 38.8 39.2 74.6 99... four Tier-1 systematic missions (SMAP, ICESAT-2, DESDynI, and CLARREO) for launch... 2015 (SMAP), early FY 2016 (ICESat-2), and late CY 2017 (CLARREO... KDP-C and enter into development; - ICESat-2 will complete KDP-B and initiate..., Cloud, and land Elevation Satellite (ICESat-2) ICESat-2, a Tier-1 Decadal Survey mission which... ice topography measurements initiated by ICESAT and extended in selected areas... may change with changing climate. ICESAT-2 measurements of land ice topography... biogeochemistry. ICESat-2 is the planned follow-on mission to ICESat, measuring elements... linkages to climate change. Additional ICESat-2 information is available under the..., Clouds, and Land Elevation Satellite (ICESat) - ICESat measures elements of ice-sheet.... The last remaining laser on ICESat has failed, and the satellite... science focus areas served by ICESat include: climate variability and change... missions, currently Terra, Aqua, Aura, ICESat and Land Cover missions. These... NASA's research program. Studies using ICESat and CryoSat-2 are solicited in... in the observational gap between ICESat and ICESat-2. Earth Systematic Missions (ESM... Data Continuity Mission (LDCM) SMAP ICESat-2 Ocean Surface Topography Mission (OSTM..., Clouds, and Land Elevation Satellite (ICESat) Solar Radiation and Climate Experiment..., Aura, TRMM, EO-1, SORCE, ICESat, and ICESat-2. JPL manages OSTM, ACRIMSat, SMAP.... SMAP JPL JPL/GSFC TBD ICESat-2 GSFC GSFC TBD OSTM JPL... prime contractor for the instrument. ICESat GSFC GSFC None. SORCE GSFC... Satellite-2 (ICESat-2) will continue the measurements begun with the ICESat mission, measuring... the climate state. In addition ICESat-2 will quantify regional signatures of... science focus areas served by ICESat-2 include climate variability and change... water and energy cycles. The ICESat-2 mission is one of four... Beyond". The ICESat-2 mission will draw from the original ICESat satellite launched....nasa.gov/missions/icesat-ii Project Preliminary Parameters The ICESat-2 observatory employs... standard project formulation processes, the ICESat-2 Project is working toward a mature... and schedule analysis of the ICESat-2 preliminary design, a baseline budget and... Elevation Satellite Estimated Project Deliverables ICESat-2 is still in pre-formulation... New Same Estimated Project Schedule ICESat-2 is still in pre-formulation... TBD TBD Acquisition Strategy The ICESat-2 lidar instrument will be designed... Purpose/Outcome Next Review Performance ICESat-2 Independent 02/2009 Review Team... Delta Review 11/2009 Performance ICESat-2 Independent 11/2009 Review Team... Civil Aviation Organization LADEE Explorer ICESat Ice, Cloud, and Land Elevation...



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... high-temporal resolution, while two (ICESAT, QuiKSCAT) recently ended their main... two Decadal Survey missions (SMAP, ICESAT-2) have accelerated launch readiness dates..., to "bridge the gap" between ICESat and ICESat-2 data. This activity, focusing..., Cloud, and Land Elevation Satellite (ICESat-2) missions will be accelerated for... KDP-C and enter into development; - ICESat-2 will complete KDP-B and initiate..., and Land Elevation Satellite (ICESat) mission, and ICESat-2, which is scheduled to..., to "bridge the gap" between ICESat and ICESat-2 data. This activity, focusing..., Cloud, and land Elevation Satellite (ICESat-II) 38.8 39.2 68.5 116..., Cloud, and land Elevation Satellite (ICESat-II) 38.8 39.2 74.6 99... four Tier-1 systematic missions (SMAP, ICESAT-2, DESDynI, and CLARREO) for launch... 2015 (SMAP), early FY 2016 (ICESat-2), and late CY 2017 (CLARREO... KDP-C and enter into development; - ICESat-2 will complete KDP-B and initiate..., Cloud, and land Elevation Satellite (ICESat-2) ICESat-2, a Tier-1 Decadal Survey mission which... ice topography measurements initiated by ICESAT and extended in selected areas... may change with changing climate. ICESAT-2 measurements of land ice topography... biogeochemistry. ICESat-2 is the planned follow-on mission to ICESat, measuring elements... linkages to climate change. Additional ICESat-2 information is available under the..., Clouds, and Land Elevation Satellite (ICESat) - ICESat measures elements of ice-sheet.... The last remaining laser on ICESat has failed, and the satellite... science focus areas served by ICESat include: climate variability and change... missions, currently Terra, Aqua, Aura, ICESat and Land Cover missions. These... NASA's research program. Studies using ICESat and CryoSat-2 are solicited in... in the observational gap between ICESat and ICESat-2. Earth Systematic Missions (ESM... Data Continuity Mission (LDCM) SMAP ICESat-2 Ocean Surface Topography Mission (OSTM..., Clouds, and Land Elevation Satellite (ICESat) Solar Radiation and Climate Experiment..., Aura, TRMM, EO-1, SORCE, ICESat, and ICESat-2. JPL manages OSTM, ACRIMSat, SMAP.... SMAP JPL JPL/GSFC TBD ICESat-2 GSFC GSFC TBD OSTM JPL... prime contractor for the instrument. ICESat GSFC GSFC None. SORCE GSFC... Satellite-2 (ICESat-2) will continue the measurements begun with the ICESat mission, measuring... the climate state. In addition ICESat-2 will quantify regional signatures of... science focus areas served by ICESat-2 include climate variability and change... water and energy cycles. The ICESat-2 mission is one of four... Beyond". The ICESat-2 mission will draw from the original ICESat satellite launched....nasa.gov/missions/icesat-ii Project Preliminary Parameters The ICESat-2 observatory employs... standard project formulation processes, the ICESat-2 Project is working toward a mature... and schedule analysis of the ICESat-2 preliminary design, a baseline budget and... Elevation Satellite Estimated Project Deliverables ICESat-2 is still in pre-formulation... New Same Estimated Project Schedule ICESat-2 is still in pre-formulation... TBD TBD Acquisition Strategy The ICESat-2 lidar instrument will be designed... Purpose/Outcome Next Review Performance ICESat-2 Independent 02/2009 Review Team... Delta Review 11/2009 Performance ICESat-2 Independent 11/2009 Review Team...