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NOAA's PRODUCT PROCESSING PLANS for the METOP MISSION

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NOAA's PRODUCT PROCESSING PLANS for the METOP MISSION P5.29 NOAA’S PRODUCT PROCESSING PLANS FOR THE METOP MISSION Stacy L. Bunin* and Diane Holmes Mitretek Systems, Inc., Falls Church, Virginia Tom Schott NOAA/NESDIS, Washington, D.C 1. INTRODUCTION launched in June 2002 to replace NOAA-15. It was placed into a mid-morning orbit (10:00 AM). In November 1998, the National Oceanic and NOAA-17’s new mid-morning orbit allows for Atmospheric Administration (NOAA) and the increased temporal coverage and production of European Organization for the Exploitation of numerous imagery-based products, such as Meteorological Satellites (EUMETSAT) signed a aerosol and vegetation index, currently not Memorandum of Agreement for participation in the available from early morning orbits due to sun Initial Joint Polar System (IJPS). IJPS consists of angle constraints. The new channel 3a (1.6 two independent, but fully coordinated, polar micron) added to the NOAA-KLM series for satellite systems. In support of IJPS, NOAA will enhanced discrimination between snow/ice and operate the NOAA-N and -N’ satellites, which will clouds is also optimized in the mid-morning orbit. be flown in a polar orbit with an afternoon (2:00 Additionally, NOAA-17 at 10:00 AM allows for a P.M.) equatorial crossing time. EUMETSAT will transition to and validation of the NOAA heritage develop the Meteorological Operational (Metop) instruments and their derived products scheduled series of satellites to be flown in a polar orbit with for Metop-1. The planned launch dates for the a mid-morning (9:30 A.M.) equatorial crossing NOAA and Metop satellites during the IJPS era time. The mid-morning and afternoon satellites follows: will each carry a set of jointly provided common instruments, plus additional instruments specific to NOAA-N – June 2004 each orbit and operating agency. Through the use Metop-1 – July 2005 of these satellites, NOAA and EUMETSAT will NOAA-N’ – March 2008 support the generation of products and services Metop-2 – August 2010 for their respective user communities. This paper will focus on NOAA’s product processing plans in The first Metop satellite is planned to become the IJPS era, including the impacts of changes to operational in 2006 after an extensive checkout the current product suite and the new products to period. be generated from Metop data, which includes sea surface winds, advanced atmospheric soundings, and higher resolution products from Metop’s global 3. IJPS INSTRUMENTS 1-km Advanced Very High Resolution Radiometer (AVHRR) data. The core environmental instrument set used for product processing on the NOAA and Metop satellites in the IJPS era are listed below. In 2. CURRENT SATELLITE STATUS AND PLANS addition, sensors for search and rescue and data collection are also part of the core instrument Currently NESDIS has two operational polar- suite. orbiting satellites. NOAA-K, now designated NOAA-15, was launched into an early morning • Advanced Microwave Sounding Unit-A orbit (7:30 AM) in May 1998. NOAA-L, now (AMSU-A) is a microwave sounder with 15 designated NOAA-16, was launched into an channels in the 23-90 GHz range. This afternoon (2:00 PM) orbit in September 2000. instrument is used primarily for derivation of NOAA-M, now designated NOAA-17, was temperature soundings along with several surface and hydrological parameters. * Corresponding author address: Stacy L. • Advanced Very High Resolution Radiometer Bunin, Mitretek Systems; 3150 Fairview Park (AVHRR/3) is an imaging radiometer with six Drive South; Falls Church, Virginia 22042; e- channels (3 visible/near infrared and 3 mail: [email protected]. infrared) in the range of 0.6-12 microns. The Metop spacecraft will have the capability to • Infrared Atmospheric Sounding Interferometer record full resolution 1-km global imagery for (IASI) is a Michelson interferometer covering one complete orbital pass. The NOAA-N and the 3.6-15.5 micron range. IASI thinned –N’ satellites will continue to provide 4-km radiances will be used initially by NESDIS and global imagery as well as more 1-km Local its users in a manner similar to those Area Coverage (LAC) imagery due to the use generated from the Atmospheric Infrared of digital recorders on the spacecraft. In Sounder (AIRS) instrument aboard NASA’s addition to imagery this instrument supports Aqua satellite. Plans also include the the production of numerous ocean, land, and generation of atmospheric temperature and ice parameters along with hazard (fire, moisture soundings to complement the HIRS, volcano) detection and monitoring. MHS, and AMSU-based soundings. • High Resolution Infrared Radiation Sounder (HIRS/4) is a temperature sounder with 19 Data streams from all core instruments, regardless infrared channels in the 3-15 micron range, of platform, plus the SBUV/2, will continue to be and one visible channel. The HIRS/4 is an available at NESDIS in order to continue to meet upgrade from the HIRS/3 currently orbiting current and planned Level 1 data and Level 2 aboard the NOAA-KLM series of satellites. product generation, distribution and archive The HIRS/4 has a smaller field of view at 10- requirements. In addition, access to the data km, compared to 20-km on the HIRS/3 model. and/or products of the four new Metop instruments • Microwave Humidity Sounder (MHS) is a will be supported in order to enhance fulfillment of microwave sounder with five channels at 89, NESDIS requirements. 157, and around 183 GHz supporting production of humidity profiles and other hydrological products. 4. DIRECT READOUT SERVICES • Space Environment Monitor (SEM-2) is a multi-channel charged-particle spectrometer. During the IJPS era, satellite data will continue to be available to direct broadcast local users In addition to the core instruments, the NOAA worldwide. The NOAA and Metop satellites will satellites will also carry: broadcast via High Resolution Picture Transmission (HRPT), which is AVHRR based for • Solar Backscatter-Ultraviolet Radiometer NOAA satellites. Initially the Metop satellites will (SBUV/2) is a spectral radiometer with 12 also only be AVHRR based, although the channels in the 252.0-322.3 nm in discrete capability exists for utilizing other Metop mode and 160-400 nm in scan mode, used for instrument data at a future date. generating total ozone and ozone profiles. While the NOAA satellites will continue to The Metop satellites will carry four new broadcast the 4-km AVHRR data via analog instruments: Automated Picture Transmission (APT) links, the Metop satellites will broadcast a new digital Low Resolution Picture Transmission (LRPT) data • Advanced Scatterometer (ASCAT) is a pulsed stream using the VHF band. LRPT includes C-band radar at 5.255 GH, and will be used to selected channels of AVHRR data, as well as generate ocean surface wind vector products. HIRS/4, AMSU-A, MHS, SEM, and the GRAS • Global Ozone Monitoring Experiment (GOME- positioning and timing data. 2) is a nadir-viewing spectrometer with four channels in the range of 0.240-0.790 microns. NESDIS plans are for using the GOME-2 to 5. IJPS PRODUCT PROCESSING derive total ozone and ozone profile products. • Global navigation satellite system Receiver for The products that will be generated during the Atmospheric Sounding (GRAS) is a radio IJPS era and their associated instrument datasets occultation receiver that uses signals from the are depicted in Figure 1. Operational snow and global navigation satellite systems. GRAS will ice, hazards, and significant event imagery are only initially be used by NESDIS for research generated by the NESDIS Office of Satellite Data applications including atmospheric Processing and Distribution’s (OSDPD) Satellite temperature and moisture profiles. Services Division on the Satellite Environmental Processing System (SATEPS). Aerosol, global vegetation, cloud imagery, sea surface Environment Center. Services during the IJPS era temperature, radiation budget, atmospheric include search and rescue and the data collection moisture and temperature soundings, ozone, and services. Products are made available to a wide microwave surface and hydrological products are variety of users via the SATEPS and CEMSCS generated by the Central Environmental Satellite servers, the Internet, the National Weather Service Computer System (CEMSCS) within OSDPD’s Gateway, the Global Telecommunications System, Information Processing Division. Other products or several other methods. include sea ice analyses generated by the National Ice Center and space environment products generated by NOAA’s Space IJPS Product Processing Level 1 Data Product Generation Levels 2 and 3 SATEPS CEMSCS Other Snow/ Hazards Aerosol Global Cloud Global Local Sea Space Ice Vegetation Imagery Sea Sea Ice Environ- Surface Surface (NIC) ment Temp Temp (SEC) •AVHRR •AVHRR •AVHRR •AVHRR •AVHRR •AVHRR •AVHRR •AVHRR •SEM-2 GAC GAC GAC GAC GAC GAC LAC LAC •HIRS/4 •AVHRR •AVHRR Significant HRPT HRPT Event Imagery Radiation Soundings Ozone MW TBD Data Search Budget Surface/ Day-2 Collection and Hydro Systems (DCS) Rescue •AVHRR (SAR) GAC •DCS •SAR •AVHRR •AVHRR •AVHRR •SBUV/2 •AMSU-A •ASCAT LAC GAC GAC •MHS •IASI •AVHRR •HIRS/4 •AMSU-A •GOME-2 HRPT •HIRS/4 •GRAS •MHS User Interfaces (Servers, Web Pages, GTS, NWS Gateway, etc.) Figure 1. IJPS Product Processing and Services. There will be a phased approached to product months and include products from AMSU-A, processing during the IJPS era based on mission HIRS/4, MHS, SEM, Metop’s HRPT AVHRR data, priorities. The highest priority is continuing the and the products based on the 4-km AVHRR data. morning mission and includes those products that Products based on the full global 1-km AVHRR are required to be generated, distributed, and data may also become operational at the archived on an operational basis at the transition transition. In addition, GOME-2 total ozone from an older spacecraft (i.e., from NOAA-16 to products are expected to become operational at NOAA-N or from NOAA-17 to Metop-1) in order to the time of the transition for continuity of the continue the fulfillment of existing requirements on NOAA-17 SBUV/2 products.
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