1 / 16

Geostationary Sounders (# of channels)

(~1600). Geostationary Sounders (# of channels). Advanced Baseline Sounder (operational). (~1600). GIFTS (experimental). (18). GOES Sounder (operational).

amcmillian
Télécharger la présentation

Geostationary Sounders (# of channels)

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. (~1600) Geostationary Sounders (# of channels) Advanced Baseline Sounder (operational) (~1600) GIFTS (experimental) (18) GOES Sounder (operational) The ABS is the next logical step from experimental low spectral resolution to finally operational high-spectral resolution sounders. (12) VAS (experimental) time

  2. ABS Prime (ABS’) -- consider using the shortwave side of the water vapor band.

  3. ABS/CrIS vs GOES retrieval for low level temperature inversion

  4. 100 100 Advanced Sounder (3074) GOES (18) Pressure (hPa) Pressure (hPa) 1000 1000 Moisture Weighting Functions High spectral resolution advanced sounder will have more and sharper weighting functions compared to current GOES sounder. Retrievals will have better vertical resolution. UW/CIMSS

  5. These water vapor weighting functions reflect the radiance sensitivity of the specific channels to a water vapor % change at a specific level (equivalent to dR/dlnq scaled by dlnp). Moisture Weighting Functions Pressure Weighting Function Amplitude Wavenumber (cm-1) UW/CIMSS The advanced sounder has more and sharper weighting functions

  6. Spatial Coverage Areas within 62 degrees local zenith angle from GOES-East and GOES-West sub-satellite points are indicated. Threshold coverage rate calls for the 62 arc region, excluding half of over-lap, to be scanned each hour. Current GOES -E and -W sounder hourly coverage is also shown. UW-Madison/CIMSS

  7. Geo-Interferometer Nears Raob-like Depiction of Atmosphere while Providing an Order of Magnitude Increase in Temporal Resolution Information Content for Moist Atmospheres interferometer current Number of channels RAOB (USA) - over land - 1 hour ascent - 300 km separation - 12 Z and 00Z only Geo Interferometer (USA)- land and coastal waters - nearly instantaneous obs - 10-50 km separation - hourly repeat A doubling of the critical low-level moisture information (from the current sounder)

  8. Cloud-Top Information Future GOES -- simulating the Advanced Baseline Sounder (ABS) performance

  9. Texas Spikes down - Cooling with height (No inversion) Brightness Temperature (K) Spikes up - Heating with height Ontario (low-level inversion) Detection of Temperature Inversions Possible with Interferometer GOES GOES Wavenumber (cm-1) The detection of inversions is critical for severe weather forecasting. Combined with improved low-level moisture depiction, critical ingredients for night-time severe storm development over the Plains can be monitored. Knowing if there is an inversion can also help improve the profiles estimates.

  10. Potential ABI Plus a 0.9 um band

  11. MODIS (1 km) ABI (2 km) UW-Madison/CIMSS Severe convection: IR windows 25 February 2001 GOES-8 (4 km) The simulated ABI clearly captures the over-shooting (cold) cloud tops, while the current GOES Imager does not. Images shown in GOES projection.

  12. Visible

  13. ABI coverage in 5 minutes GOES coverage in 5 minutes ABI spatial coverage rate versus the current GOES Imager The ABI may take full disk images every 15 min. + CONUS images every 5 min.

  14. Visible

  15. linden_haze_0.439_0.498 Smoke

More Related