GOES to the Pole GOES to the Pole Lars Peter Riishojgaard/UMBC & Dennis Lars Peter Riishojgaard/UMBC & Dennis Chesters/NASA Chesters/NASA Geostationary-class meteorological imager in a Molniya Geostationary-class meteorological imager in a Molniya orbit orbit Busted forecasts do Busted forecasts do occur because occur because unobserved polar winds unobserved polar winds move into lower move into lower latitudes latitudes Polar cloud and water Polar cloud and water vapor features have vapor features have been tracked with been tracked with time-series satellite time-series satellite images in MODIS bands images in MODIS bands orbit is perfectly semi-geosynchronous orbit is perfectly semi-geosynchronous tric Kepler orbit ric Kepler orbit t 39750 km (geostationary orbit height ~36000 km) t 39750 km (geostationary orbit height ~36000 km) ht ~600 km ht ~600 km 63.4 degrees 63.4 degrees od ~11h 58m (half a sidereal day) od ~11h 58m (half a sidereal day) apogee w.r.t. Earth is fixed and stable! pogee w.r.t. Earth is fixed and stable! quasi-stationary imaging position near the apogee for about two thirds of the duration of the orbit uasi-stationary imaging position near the apogee for about two thirds of the duration of the orbit vely by USSR (to a lesser degree by the US) for communications purposes ely by USSR (to a lesser degree by the US) for communications purposes ted for meteorological applications by Kidder and Vonder Haar (1990) ed for meteorological applications by Kidder and Vonder Haar (1990) Polar (>60N) coverage Polar (>60N) coverage eliminates the high eliminates the high latitude gap in latitude gap in satellite-determined satellite-determined global winds global winds Low-risk mission at PDR level Low-risk mission at PDR level Science Team Science Team • Lars Peter Riishojgaard, UMBC, PI Lars Peter Riishojgaard, UMBC, PI • Bob Atlas, NOAA, Simulation/impact experiments Bob Atlas, NOAA, Simulation/impact experiments • Dennis Chesters, GSFC, Instrumentation, mission Dennis Chesters, GSFC, Instrumentation, mission • Ken Holmlund, EUMETSAT, Algorithm development Ken Holmlund, EUMETSAT, Algorithm development • Jeff Key, NESDIS/ORA, Data processing, polar products Jeff Key, NESDIS/ORA, Data processing, polar products • Stan Kidder, CIRA, High-latitude applications Stan Kidder, CIRA, High-latitude applications • Arlin Krueger, UMBC, Volcano monitoring Arlin Krueger, UMBC, Volcano monitoring • Paul Menzel, NESDIS/ORA, Cloud applications Paul Menzel, NESDIS/ORA, Cloud applications • Jean-No Jean-No ël Thépaut, ECMWF, Global NWP applications ël Thépaut, ECMWF, Global NWP applications • Chris Velden, CIMSS/UW, Algorithm development Chris Velden, CIMSS/UW, Algorithm development • Tom Vonder Haar, CIRA, Satellite meteorology Tom Vonder Haar, CIRA, Satellite meteorology Lifetime Lifetime 36 months (60 month goal) 36 months (60 month goal) Orbit Orbit 718 min Molniya @ 63.4 degree inclination 718 min Molniya @ 63.4 degree inclination Visible channel Visible channel 0.55-0.88 micron @ 1 km resolution 0.55-0.88 micron @ 1 km resolution Infrared channels Infrared channels 3.9, 6.3, 7.1, 11.0, 12.0 microns @ 2 km 3.9, 6.3, 7.1, 11.0, 12.0 microns @ 2 km resolution resolution Radiometric Radiometric precision precision Vis 500:1 SNR @ 100%, IR 0.2K @ 300K or 0.5K Vis 500:1 SNR @ 100%, IR 0.2K @ 300K or 0.5K @ 250 K @ 250 K Radiometric Radiometric accuracy accuracy Vis 6%, IR 1 K Vis 6%, IR 1 K Field of Regard Field of Regard >24 degrees + star field >24 degrees + star field Time for full- Time for full- disk image disk image <15 minutes <15 minutes Input power Input power <180W (including 20% contingency) <180W (including 20% contingency) Mass Mass <136 kg (including 30% contingency) <136 kg (including 30% contingency) GOES-like instrument characteristics GOES-like instrument characteristics