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LANCE-AIRS LANCE-MLS Status

LANCE-AIRS LANCE-MLS Status. Bruce Vollmer Bruce.E.Vollmer@nasa.gov Mike Theobald Michael.L.Theobald@nasa.gov LANCE User Working Group Meeting November 16, 2010. Overview (1). Summary of Products AIRS L1B (VIS/NIR radiances, microwave brightness temps)

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LANCE-AIRS LANCE-MLS Status

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  1. LANCE-AIRS LANCE-MLS Status Bruce Vollmer Bruce.E.Vollmer@nasa.gov Mike Theobald Michael.L.Theobald@nasa.gov LANCE User Working Group Meeting November 16, 2010

  2. Overview (1) • Summary of Products • AIRS L1B (VIS/NIR radiances, microwave brightness temps) • AIRS L2 (standard retrieval, cloud cleared radiances, support product) • AIRS images via WMS (VIS radiances, CO, Bt_diff_SO2, Dust score) • Aqua attitude/ephemeris • MLS L2 (Temperature, Ozone) • Aura attitude/ephemeris • Metrics • Latency • Data available within 80-140 minutes of observation • 98% of data available within 3 hours of observation (average month) • Distribution • 150 – 200 K files per month • 0.8 – 1.2 TB per month • Users • 32 registered users • 17 AIRS, 11 MLS, 3 both, 1 Aqua ephemeris

  3. Overview (2) • NRT versus Standard • AIRS • Version 5 algorithms running in both systems (same code) • Predicted ephemeris used in NRT system • MLS • MLS NRT Temperature and Ozone data lower quality than standard products • Streamlined L2 algorithm utilized to meet latency requirements • NRT products are 15 minute granules; standard products are daily files • Redundancy Status • Dual RBD feed from EDOS • Two servers for each function (acquisition, processing, distribution) • Data acquisition, processing servers on single UPS served by redundant PDUs • Distribution servers on separate UPSs served by redundant PDUs • All servers on a redundant network • Multiple firewalls, switches, routing) • Automated fault detection, manual failover • User Support • Help-disc@listserv.gsfc.nasa.gov • 301-614-5224

  4. Element Changes since December 09 Workshop • New Products • AIRS L1B channel subsets available in BUFR • Services • AIRS images served through WMS available in multiple formats (PNG, GeoTIFF, KMZ) • System Changes • AIRS Production rules • Use adjacent granules when available (L1) • Use ancillary data (L2) • Redundant distribution servers • User Registration fully implemented • Web portal updated with data quality information

  5. Additional Upgrades for Discussion • Suggested LANCE-MLS Enhancements • Improved MLS L2 product quality (MLS SIPS) • Consistent with latency requirements • MLS considering adding water vapor product • Potential LANCE AIRS Enhancements • AIRS L1B in BUFR (custom channel selection) • Apply format conversion service for Standard Products to NRT data • AIRS L2 available in netCDF • Provide NRT data through OPenDAPservice • Granule maps associated with WMS images • Variable subsetting • Applications of AIRS parameters for environmental monitoring • Giovanni for select NRT parameters

  6. Background Material-(Include an image to be used as a backdrop during element discussion) - (Product List) -(Redundancy Architecture Drawing) - (NRT v Standard images etc)- (Client Affiliation and Applications)- (Whatever else)

  7. Carbon monoxide from AIRS from Russian wildfires

  8. NRT Datatypes available from GES DISC

  9. AIRS L1 Product Quality AIRS Level1-B VIS/NIR Browse Image Production Near-Real Time

  10. GES DISC system architecture The diagram above shows simple architecture of GES DISC’s AIRS and MLS near real-time systems.

  11. MAX DOOR A DOOR B NISN GES-DISC Network Diagram Overview GES-DISC ACCREDITATION BOUNDARY Firewall 1 JPL EMS MODAPS AIRS TLSCF MLS SIPS EDOS AIRS, MLS (Level 0 & RBD) 1G 1G Failover ESDIS Firewall 2 1G 1G 1G 10G NISN PIP 1G Core Switch NISN SIP 10G 1G 1G 1G 10G 10G 10G 1G 1G Open EBNet Core 1G 1G 10G Science User Community CNE 1G GESDISC CNE Hosts To NISN PIP,SIP AIRS LANCE & MLS Subsystems To Intenet2, FedNets 1G MAX SEN 10G 1G GESDISC SEN Hosts GES DISC E0 Network (Production LAN) 10G Public IP space Private IP space 1G 10G

  12. Mt. Redoubt, Alaska BT_diff_SO2 [Tb(1361.44 cm-1) - Tb(1433.06 cm-1)] March 22-25 2009

  13. AIRS Images via WMS

  14. MLS NRT Product Quality1 • The Aura MLS NRT data products are derived from a reduced Level-2 algorithm which uses a fast linearized forward model resulting in computational resource requirements reduced dramatically compared to the standard product processing suite. • NRT Temperatures are within 1-2 K of the MLS standard product • Recommended range for scientific use is 178 hPa to 1 hPa • NRT Ozone is within 5-10% (ppmv) of MLS standard product • Recommended range for scientific use is 68 hPa to 0.2 hPa • Improvements are needed for NRT products to be viable globally for the UTLS region and above the stratosphere for temperature 1From presentation by Alyn Lambert (MLS NRT PI) to NASA Hq Aug 2009

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