Satellite geophysics. Land and Sea Ice.

C.C.Tscherning, University of Copenhagen, 2013-12-01 1

Applications:

• Mapping the altitude of ice-covered areas

• Map the distribution of sea-ice, ice warning (DMI).

• Changes and interpretation of changes related to sea-level

Satellite geophysics. Land and Sea Ice.

C.C.Tscherning, University of Copenhagen, 2013-12-01 2

Satellite geophysics. Land and Sea Ice.

C.C.Tscherning, University of Copenhagen, 2013-12-01 3

• Satellitter: • http://database.eohandbook.com/database/missiontable

.aspx

• Instrumenter• http://database.eohandbook.com/database/instrumentta

ble.aspx

• Data sources• http://database.eohandbook.com/measurements/overvi

ew.aspx

Satellite geophysics. Land and Sea Ice. Satelitter I

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• SEASAT, ERS1/2, ENVISAT, TPX – Radar altimetry and SAR

• RADARSAT (SAR)• CryoSat2 - Interferometric altimetry• ICESAT – Laser altimetry• SPOT-5, ASTER

Satellite geophysics. Land and Sea Ice. Satelitter

C.C.Tscherning, University of Copenhagen, 2013-12-01 5

• Nimbus-7, DMSP, NOAA, Landsat,Aqua (NASA): SMMR, SSM/I, AMSR-E.

• NPP: VIIRS (npp.gsfc.nasa.gov)

• SMOS

• GRACE (tyngdeændringer)

Satellite geophysics. SEASAT.

C.C.Tscherning, University of Copenhagen, 2013-12-01 6

• Launched 28 JUN 78, stopped 10 OCT 1978• a= 7930 km, i=108 grader, T= 100 m• Radar-altimeter, Syntetisk Aparture Radar.• Demonstrated earth-observation from satellie

worked. (Maybe too well).• Forrunner for ESA, NASA as well as US-DOD

satellittes.• http://ilrs.gsfc.nasa.gov/satellite_missions/list_o

f_satellites/seas_general.html

Satellite geophysics.ERS-1/2, ENVISAT, TPX.

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• ERS1/2, ENVISAT – Radar altimetry and SAR• Covers up to 82 degrees ! 36 days repeat.• http://cct.gfy.ku.dk/publ_cct/cct1422.pdf• http://cct.gfy.ku.dk/publ_others/ccta2002.pdf• US DOD satellittes: GEOSAT, GSFO• Secret USSR satellittes• TOPEX/Poseidon, Jason – Radar Altimetry• Covers up to 65 degrees, 11 days repeat.

Satellite geophysics. CryoSat2.

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• CryoSat2 - Interferometric altimetry• Not sun-synkroneous, a=7095, i=92 grader, 369

days repeat• http://www.esa.int/esaLP/LPcryosat.html• http://www.esa.int/esaLP/SEMNKR1PLFG_LP

cryosat_0.html

Satellite geophysics. ICESAT.

C.C.Tscherning, University of Copenhagen, 2013-12-01 9

• i=94 degrees, • http://icesat.gsfc.nasa.gov/• Anvendelser: Aakjær og Levinsen, 2009.

http://cct.gfy.ku.dk/publ_others/ccta1989.pdf

Satellite geophysics. ICESAT.

C.C.Tscherning, University of Copenhagen, 2013-12-01 10

Satellite geophysics. SPOT-5.

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• http://en.wikipedia.org/wiki/SPOT_%28satellite%29#SPOT_5

• Levinsen et al., 2013:

• http://cct.gfy.ku.dk/publ_cct/cct2175.pdf

• HRS High Resolution Stereoscope• http://catalog.spotimage.com/PageSearch.aspx

Satellite geophysics. Nimbus, DMSP, AQUA.

C.C.Tscherning, University of Copenhagen, 2013-12-01 12

• http://nsidc.org/data/docs/daac/f17_platform.gd.html

• Http://www.nasa.gov/mission_pages/aqua/• http://toms.gsfc.nasa.gov/n7toms/nimbus7tech.

html

Satellite geophysics. NPP.

C.C.Tscherning, University of Copenhagen, 2013-12-01 13

• NPP: VIIRS (http://npp.gsfc.nasa.gov)• Build your own NPP:• http://npp.gsfc.nasa.gov/images/D1978_NPP_P

aper_Model_Letter_OPTIMIZED.pdf

Satellite geophysics. Instruments.

C.C.Tscherning, University of Copenhagen, 2013-12-01 14

• Radar and Laser altimeters• Interferometrisk altimetri

Satellite geophysics. SAR.

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Satellite geophysics. SAR.

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Satellite geophysics. SAR.

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Satellite geophysics. SPOT-5 HRS.

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Satellite geophysics. SPOT-5 HRS.

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Satellite geophysics. SAR.

C.C.Tscherning, University of Copenhagen, 2013-12-01 20

Satellite geophysics. NOAA-N.

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Satellite geophysics. Radiometri.

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AVHRR/3 is a six channel imaging radiometer that detects energy in the visible IR portions of the electromagnetic spectrum.

HIRS/4 provides multispectral data from one visible channel, seven shortwave channels, and twelve longwave channels using a single telescope and a rotating filter wheel containing twenty individual spectral filters. AMSU-A is a cross-track scanning total power radiometer, which is divided into two physically separate modules that interface with the spacecraft independently. The AMSU-A measures scene radiance in the microwave spectrum. MHS is a five-channel microwave instrument intended primarily to measure profiles of atmospheric humidity.

Satellite geophysics. GRACE.

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- Gravity Recovery and Climate Experiment

Satellite geophysics. GRACE – Greenland.

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Time series of ice mass changes for the GrIS based on GRACE monthly mass http://cct.gfy.ku.dk/ccta2024.pdf. Blue is the unfiltered mass change estimates, red is the filtered data, and green is the best fitting quadratic trend.

Satellite geophysics. EUMETSAT.

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• /http://www.eumetsat.int/Home/Main/Satellites/GroundNetwork/ApplicationGroundSegment/SAFs/SAFProjects/SP_2010053117495263

Satellite geophysics. DTU.

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• http://www.dcrs.dtu.dk/