1 / 40

COSMIC: Constellation Observing System for Meteorology, Ionosphere and Climate

COSMIC: Constellation Observing System for Meteorology, Ionosphere and Climate. Mission Status and Results UCAR COSMIC Project. FORMOSAT-3. Launch on April 14, 2006, Vandenberg AFB, CA. All six satellites stacked and launched on a Minotaur rocket

geona
Download Presentation

COSMIC: Constellation Observing System for Meteorology, Ionosphere and Climate

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. COSMIC: Constellation Observing System for Meteorology, Ionosphere and Climate Mission Status and Results UCAR COSMIC Project FORMOSAT-3

  2. Launch on April 14, 2006, Vandenberg AFB, CA • All six satellites stacked and launched on a Minotaur rocket • Initial orbit altitude ~500 km; inclination ~72° • Will be maneuvered into six different orbital planes for optimal global coverage (at ~800 km altitude) • Satellites are in good health and providing data-up to 2200 soundings per day to NOAA COSMIC launch picture provided by Orbital Sciences Corporation

  3. COSMIC - Final Deployment • 6 Planes • 71 Degrees inclination • 800 Km • 2500 Soundings per day • Latency 50-140 minutes from observation to NOAA Courtesy NSPO

  4. Current Constellation May 7, 2007

  5. Over 1 Million Profiles Neutral Atmosphere Ionosphere

  6. Sunday May 6, 2007 occultations

  7. Getting COSMIC Results to Weather Centers Operational Processing TACC JCSDA NCEP Input Data NESDIS CDAAC ECMWF CWB GTS UKMO BUFR Files WMO standard 1 file / sounding JMA Canada Met. Science & Archive NRL Data available to weather centers within < 180 minutes of on-orbit collection

  8. Operator Interface - 6 Sat Dump Overview

  9. Example Operator Dump Information

  10. Operator Summary - Problem Dump!

  11. SNR 6 SV Overview - Example Good Day

  12. SNR Summary 6 Sats - FM4 orbit raise

  13. Summary of JPL-provided GOX firmware improvements from build 4.0 to build 4.3 B4.0 to B4.2: 1) Fix corrupted Nav message due to tracking on the POD antenna through the atmosphere. 2) Fix to rising occultation OL -> CL transitions. B4.2 to B4.2.1: 1) Double precision P2 Phase in QuadraticFitObservable packet. 2) Adjustments to forward POD scheduling to facilitate ionospheric occultations, and fix a bug that turned off high-rate reference data too early 3) Adjustments to drift time for setting occultations 4) Changes to open loop model B4.2.1 to B4.3: 1) Fix bug in which the azimuth window on occultation antennas was limited to a maximum of 45 degrees. Azimuth can now be commanded to maximum of 75 degrees 2) Fix bug that causes rising occultations to end earlier than at the commanded height 3) Insertion of S4 scintillation parameter into the unused P1 SNR field of quad fit packets. The value is now a short integer representing an SR pseudo-variance factor. 4) Fix a bug that causes integer cycle slips during transition from open to closed loop tracking of rising occultations 5) Fixes to az/el reporting in occultation log messages. Also improved consistency in the formatting of the messages 6) Fix to bug that sometimes causes receiver to halt acquisition and tracking of a particular PRN. B4.3 to B4.4 (planned for May 2007) 1) Double L2 tracking loop bandwidth to reduce soundings that fail for “bad L2”. Avoid wrapping of L2. 2) Add ability to use either POD antenss as reference antenna and as navigation antenna. 3) L2C tracking

  14. Status of Satellites / CDAAC • All satellites and payloads working • FM2 lost 1 solar panel - currently only operating GPS receiver (TIPP + TBB turned off) • GPS receiver on FM6 shows erratic behavior (sudden drop in SNR on some antennas sometimes for minutes sometimes for days) - this results in loss of data • Still some data lost to infrequent data dumps (mainly during orbit raising periods) • Some attitude control problems • CDAAC purchased a new processing cluster for reprocessing for climate product

  15. Neutral Atmosphere Results

  16. Comparison of Pairs of COSMIC soundings with GFS analysis

  17. Statistics of Collocated Soundings

  18. The Effect of Open Loop Tracking

  19. Penetration of setting/rising soundings

  20. Detecting the Atmospheric Boundary layer with RO

  21. Sensing the ABL with COSMIC

  22. Global Distribution and Height of ABL

  23. Southern Hemisphere Forecast Improvements from COSMIC Data Sean Healey, ECMWF

  24. Impact study with COSMIC • 500 hPa geopotential heights anomaly correlation (the higher the better) as a function of forecast day for two different experiments: • PRYnc (assimilation of operational obs ), • PRYc (PRYnc + COSMIC) • We assimilated around 1,000 COSMIC profiles per day • Results with COSMIC are very encouraging

  25. Using COSMIC for Hurricane Ernesto Prediction With COSMIC Without COSMIC Results from Hui Liu, NCAR

  26. Using COSMIC for Hurricane Ernesto Prediction With COSMIC GOES Image GOES Image from Tim Schmitt, SSEC

  27. Climate

  28. COSMIC - CHAMP Mission Comparison

  29. Ionosphere and Space Weather

  30. First collocated ionospheric profiles From presentation by Stig Syndergaard, UCAR/COSMIC

  31. Comparisons with ISR data[Lei et al., submitted to JGR 2007]

  32. Trans-Ionospheric Rays in 100 minutes

  33. Scintillation Sensing with COSMIC No scintillation S4=0.005 Scintillation S4=0.113 Where is the source Region of the scintillation? GPS/MET SNR data

  34. COSMIC Data Access More than 496 data users have registered • http://www.cosmic.ucar.edu • * Select the 'Sign Up ' link under • COSMIC • Accept data use agreement • * Enter information: • Name, Address, email, user_id, • Password, planned use of data • An email will be sent within 2-3 • business days to indicate • access has been granted.

  35. CDAAC Team

More Related