Examples of Polar Orbiting Meteorological Satellites: Terra & Aqua

Examples of PolarOrbiting MeteorologicalSatellites:Terra & AquaErdem ERDİTurkish State MeteorologicalServiceRemote Sensing Division15-19 March '10 Alanya, Turkiye 1

Presentation Overview:- NASA EOS Mission- Terra Satellite and Instruments- Aqua Satellite and Instruments- An Overview About Orbits- MODIS Data and Products- How to reach to the data and products- Current status and follow-on satellites (NPP)15-19 March '10 Alanya, Turkiye 2

NASA EOS MissionThe Earth Observing System (EOS) is a coordinated series of polar-orbitingand low inclination satellites for long-term global observations of the landsurface, biosphere, solid Earth, atmosphere, and oceans.The main purpose is research studies for the exploration of the earth andatmosphere system.and many others…15-19 March '10 Alanya, Turkiye 3

Terra Satellite and InstrumentsTerra launched on December 18, 1999from Vandenberg Air Force Base,California.-Orbit: 705 km altitude, sun-synchronous-Orbit Inclination: 98.3 degrees from theEquator-Orbit Period: 98.88 minutes-Equator Crossing: 10.30 a.m. (north tosouth) (morning satellite)-Ground Track repeat cycle: 16 days, i.e.every 16 days (or 233 orbits) the patternof orbits repeats itself15-19 March '10 Alanya, Turkiye 4

Terra Satellite and Instruments15-19 March '10 Alanya, Turkiye 5

Terra Satellite and Instruments15-19 March '10 Alanya, Turkiye 6

Terra on-board instruments are:-ASTERTerra Satellite and Instruments-CERES-MISR-MOPITT-MODIS15-19 March '10 Alanya, Turkiye 7

Aqua Satellite and InstrumentsAqua launched on May 4, 2002 fromVandenberg Air Force Base, California.-Orbit: 705 km altitude, sun-synchronous-Orbir Inclination: 98 degrees from theEquator-Orbit Period: 99 minutes-Equator Crossing: 13.30 (south to north)(afternoon satellite)15-19 March '10 Alanya, Turkiye 8

Aqua on-board instruments are:-AIRSAqua Satellite and Instruments-AMSU-A-HSB-AMSR-E-CERES-MODIS15-19 March '10 Alanya, Turkiye 9

An Overview About Orbits15-19 March '10 Alanya, Turkiye 10

MODIS Data and Products03/03/2010 MODIS Bands:1/4/315-19 March '10 Alanya, Turkiye 11

MODIS Data and Products03/03/2010 MODIS Bands:1/4/315-19 March '10 Alanya, Turkiye 12

MODIS Data and ProductsTerra MODIS, 21 January 2003SSEC Direct Broadcast15-19 March '10 Alanya, Turkiye 13

MODIS Data and ProductsScan Rate:SwathDimensions:Telescope:Size:Weight:Power:Data Rate:Quantization:SpatialResolution:20.3 rpm, cross track2330 km (cross track) by 10 km (along track at nadir)17.78 cm diam. off-axis, afocal (collimated), withintermediate field stop1.0 x 1.6 x 1.0 m228.7 kg162.5 W (single orbit average)10.6 Mbps (peak daytime); 6.1 Mbps (orbital average)12 bits250 m (bands 1-2)500 m (bands 3-7)1000 m (bands 8-36)15-19 March '10 Alanya, Turkiye 14

MODIS Data and Products15-19 March '10 Alanya, Turkiye 15

MODIS Data and ProductsPrimary Atmospheric Band Bandwidth 1 T typical Radiance 2 NET (K)Application(K) at T typical SpecificationNET (K)PredictedSurface Temperature 20 3.660-3.840 300 0.45 0.05 0.0522 3.929-3.989 300 0.67 0.07 0.0523 4.020-4.080 300 0.79 0.07 0.05Temperature profile 24 4.433-4.498 250 0.17 0.25 0.1525 4.482-4.549 275 0.59 0.25 0.10Moisture profile 27 6.535-6.895 240 1.16 0.25 0.0528 7.175-7.475 250 2.18 0.25 0.0529 8.400-8.700 300 9.58 0.05 0.05Ozone 30 9.580-9.880 250 3.69 0.25 0.05Surface Temperature 31 10.780-11.280 300 9.55 0.05 0.0532 11.770-12.270 300 8.94 0.05 0.05Temperature profile 33 13.185-13.485 260 4.52 0.25 0.1534 13.485-13.785 250 3.76 0.25 0.2035 13.785-14.085 240 3.11 0.25 0.2536 14.085-14.385 220 2.08 0.35 0.3515-19 March '10 Alanya, Turkiye 16


MODIS Data and ProductsMODIS15-19 March '10 Alanya, Turkiye 18

MODIS Data and ProductsMODIS geolocation includesterrain correction based on1000 meter DEMEarth location withterrain correctionLine of sight tosensorEarth location withoutterrain correction15-19 March '10 Alanya, Turkiye 19

MODIS Data and ProductsMODIS products which are derived from MODIS data are divided into 4main groups:http://modis-atmos.gsfc.nasa.gov/http://modis-land.gsfc.nasa.gov/http://oceancolor.gsfc.nasa.gov/http://mcst.gsfc.nasa.gov/15-19 March '10 Alanya, Turkiye 20

MODIS Data and ProductsMODIS Atmosphere had originally 5 different product sub-groups:-MOD/MYD 04 Aerosol Product-MOD/MYD 05 Water Vapor Product-MOD/MYD 06 Cloud Product-MOD/MYD 07 Atmosphere Profile Product-MOD/MYD 35 Cloud Mask Product15-19 March '10 Alanya, Turkiye 21









How to reach to the data and productsFor Near-Real Time TrueColor MODIS images:http://rapidfire.sci.gsfc.nasa.gov/subsets/For MODIS level 1B data and atmosphere product (including subset,reproject and reformat options):http://ladsweb.nascom.nasa.gov/data/search.html15-19 March '10 Alanya, Turkiye 30

Current status and follow-on satellites (NPP)Terra and Aqua satellites had already expired their intended and designed lifetimewhich are around 6 years each. But their superior engineering and optimaloperations have allowed their service which is continuing today.NPP satellite which is planned to be launched in late 2011 will be a gap fillerbetween the EOS Terra & Aqua satellites and future operational NPOESS-likesatellites.VIIRS instrument which will be flying on-board the NPP satellite will have someheritage from MODIS with less number of spectral channels but an overall finerspatial resolution.15-19 March '10 Alanya, Turkiye 31

esources- NASA websiteshttp://modis.gsfc.nasa.gov/http://terra.nasa.gov/http://aqua.nasa.gov/-Presentation of Liam Gumley about MODIS from MODIS/AIRS Seminar,Italy,200715-19 March '10 Alanya, Turkiye 32

Examples of Polar Orbiting Meteorological Satellites: Terra & Aqua

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