1. Observing System Simulation Experiments at CIMSSBy
CIMSS/OSSE Team :
Bob Aune ; Paul Menzel ; Jonathan Thom
Gail Bayler ; Chris Velden ; Tim Olander
and Allen Huang
Cooperative Institute for Meteorological Satellite Studies
University of Wisconsin
7 June, 1999

3. Current Research Plan
Initial Impact Study: Geostationary Interferometer Simulated Products from “Nature” Atmosphere: Soundings (T, Td) Winds (Cloud drift / Water Vapor) Soundings plus Winds Soundings, Winds, Conventional Data Radiances Derived Products from Simulated Radiances Retrievals (T, Td, derived products) Winds (automated wind algorithm) Direct radiance assimilation

10. UW-NMS Domain in the Eta 104 grid

11. “Nature” Calibration

13. NMS Grid Locations with Cloud Mask

14. Surface
RAOBS
ACARS
Profilers

21. Sensitivity of RUC analysis to retrieval density

22. GEO-R versus GEO-I
Retrieved T and Td

23. GEO-R versus GEO-I
Retrieved T and Td

24. GEO-R versus GEO-I
Retrieved T and Td

28. GEO-R versus GEO-I
Retrieved T and Td
Sat Winds
Conventional

30. GEO-R versus GEO-I
Retrieved T and Td
Sat Winds
Conventional

31. GEO-R versus GEO-I
Retrieved T and Td
Sat Winds
Conventional

33. GEO-R versus GEO-I
Retrieved T and Td
Sat Winds
Conventional

35. GEO-R versus GEO-I
Retrieved T and Td
Sat Winds
Conventional

37. GEO-R versus GEO-I
Retrieved T and Td
Sat Winds
Conventional

38. Plans for the Future
* Simulate winds from radiances * Assimilate retrievals from radiances * Assimilate radiances with 3DVar * 14 day test periods (winter and spring) * Resolve boundary condition issues * Low Earth Orbit (LEO) OSSE * Test other observing systems

39. Wind Experiment Using Simulated Radiances
1) Simulate radiances from GOES and from a geostationary interferometer using forward radiative transfer. 2) Put simulated radiances into the automated wind algorithm and generate cloud drift and water vapor winds

40. Hurricane Bonnie Wind and Cloud Fields
Wind Vectors :
Red - 1 km level
Green km
level
Clouds :
Light gray -
Ice Cloud
Dark Gray -
Water Cloud

41. GOES Radiances Simulation Verification

42. Wind Tracking Verification

43. Wind Tracking Verification - Continued

44. Tracking Interferometer Radiances

45. Tracking Mixing Ratio from Model