1. 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. 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 Help-disc@listserv.gsfc.nasa.gov  301-614-5224 3

4. 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. 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 OPenDAP service  Granule maps associated with WMS images  Variable subsetting  Applications of AIRS parameters for environmental monitoring  Giovanni for select NRT parameters

6. 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. 7 Carbon monoxide from AIRS from Russian wildfires

8. AIRABRAD_NRTAqua/AIRS Level 1B AMSU-A1 and AMSU-A2 Combined Geolocated and Calibrated Brightness Temperatures AIRIBQAP_NRTAqua/AIRS Level 1B Infrared (IR) Quality Assurance Subset AIRIBRAD_NRTAqua/AIRS Level 1B Infrared (IR) Geolocated and Calibrated Radiances AIRIBRAD_NRT_BUFR324-channel subset of L1B IR geolocated radiances in BUFR format AIRVBQAP_NRTAqua/AIRS Level 1B Visible/Near Infrared (VIS/NIR) Quality Assurance Subset AIRVBRAD_NRTAqua/AIRS Level 1B Visible/Near Infrared (VIS/NIR) Geolocated and Calibrated Radiances AIRI2CCF_NRTAqua/AIRS FINAL AIRS Level 2 Cloud Clear Radiance Product AIRX2RET_NRTAqua/AIRS Level 2 Standard Final Retrieval Product AIRX2SUP_NRTAqua/AIRS Level 2 Support Product PM1EPHND_NRTPreprocessed Aqua Platform Ephemeris product PM1ATTNR_NRTPreprocessed Aqua Platform attitude product ML0ENG1_NRT, ML0ENG2_NRT, ML0ENG3_NRT, ML0ENG4_NRT, ML0ENG5_NRT, ML0ENG6_NRT, ML0SCI1_NRT, ML0SCI2_NRT MLS Level 0 Data (8 APIDs) * *Distributed to MLS SIPS only ML2O3_NRTAura/MLS L2 Ozone (O3) Mixing Ratio ML2T_NRTAura/MLS L2 Temperature AURATTN_NRTPreprocessed Aura platform attitude product AUREPHMN_NRTPreprocessed Aura platform ephemeris product NRT Datatypes available from GES DISC

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

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

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

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

15. AIRS Images via WMS 15

16. MLS NRT Product Quality 1  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 1 From presentation by Alyn Lambert (MLS NRT PI) to NASA Hq Aug 2009