grace fo aelous icesat-2 cfosat swot earthcare · solar radiationback intospaceand trapping...
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Nye Jordobservasjonssatellitter – Nyttig for Nordområdene og Arktis
Johnny A. JohannessenNansensenteret
NGF årsmøte, Bergen, September 2018
GRACE FO AELOUS ICESAT-2 CFOSAT SWOT EARTHCARE
Romfartsorganisasjoner-Satellitter-InstrumenterCountry Agency Key Satellites Instruments
Europe ESA ERS, Envisat, Earth Explorer (Aeolus, EarthCare,.) ATSR, SAR, Scatterometer, altimeter, spectrometer, Lidar
Europe EUMETSAT Meteosat, MSG, METOP AVHRR, Scatterometer
Europa EU/ESA Copernicus Sentinels SAR, altimeter, spectrometer, IR radiometer, +++++
France CNES Topex/Poseidon, Jason, Altika, CFOSAT Altimeter, SAR-altimeter, Scatterometer
Germany DLR TerraSAR-X, Tandem-X X-band SAR
Italy ASI Cosmo-Skymed X-band SAR
USA NASA ICESat, GRACE FO, Aqua 2, SWOT Laser altimeter, Accelerometer, Modis, swot altimeter
USA NOAA TIROS AVHRR
Canada CSA Radarsat C-band SAR Constallation
JAPAN JAXA Aqua 2, EarthCare AMSR-E, Lidar, radar,
India ISRO Scatt, Altika Scatterometer, altimeter
China CNSA FY, HY, Disaster satellites, CFOSAT AVHRR, altimeter, SAR, Scatterometer
GRACE Follow-On (NASA): Tracking water in motion – launched 22 May 2018
Aeolus (ESA): Doppler wind lidar for detecting radial (vertical wind)launched 22 August 2018
• Measure 100 wind profiles per hour (along a single line-of-sight) up to an altitude of 30 km
• Measure wind to an accuracy of 1 m/s in the planetaryboundary layer (up to an altitude of 2 km)
• Measure wind to an accuracy of 2 m/s in the freetroposphere (up to an altitude of 16 km)
• Determine the average wind velocity over 100 km tracks
Aeolus (ESA): Doppler wind lidar for detecting radial (vertical wind)launched 22 August 2018
12 September 2018 data takeCourtesy ECMWF
ICESat-2 (NASA): Laser altimeter – launched 15 September 2018
Chinese-French Oceanography Satellite (CFOSAT) missionplanned launch 29 October 2018
KEY OBJECTIVES
• Ocean dynamics
• Interactive processeslinked to wind and waves
• Climate variability
Orbit height of 520 kmRotating scatterometersIncidence 0, 2, 4, 6, 8, 10 degrees
Radarsat Constallation Mission: Synthetic Aperture Radar, launch 15 Nov 2018
Surface Water Ocean Topography (SWOT) – Joint NASA/CNES missionplanned launch April 2021
Mesoscale to sub-mesoscale processes
Hydrological processes
Spatial resolution: 15-25 km
EarthCare (ESA/JAXA): Earth Clouds, Aerosols and Radiation Explorerplanned launch 2021
Mission objectives:
Advance the understanding of the role thatclouds and aerosols play in reflecting incidentsolar radiation back into space and trapping infrared radiation emitted from Earth'ssurface.
A high-resolution atmospheric lidar and a radar, together with a multispectral imager and a broadband radiometer.
Nyttig for Nordområdene og Arktis
MISSION NYTTEVERDI
GRACE FOLLOW-ON Masse endringer av Grønlandsisen og havet som kan knyttes til global oppvarming -økt nedsmelting og ferskvannsavrenning til havet
AEOLUS Kunnskap om vind-jet systemene, 3-D Grenselagsvinder og bedre prosessforståelser av hav-is-atmosfære vekselvirkning
ICESAT 2 Bestemmelse av sjøistykkelse og isbre-endringer med god nøyaktighet
CFOSAT Bedre kunnskap om vekselvirkning mellom vind og bølger
RADARSAT CONSTALLATION Sjøisdrift, deformasjon, isråk utvikling og polynya dannelser, olje søl,
SWOT Økt forståelse av mesoskala-submesoskala prosesser i havets øver lag
EARTHCARE Bedre målinger av jordens strålingsbudsjett
High Ellipitical Orbit (HEO) – fremtidens satellittbanemed lang observasjonstid over nordområdene ogArktis
For a polar orbiting satellite in normal LEOthe time for one full trip around theEarth is about 100 minutes
Time in hours