1 / 12

GOES-R Proving Ground CIRA / RAMMB Progress Report

GOES-R Proving Ground CIRA / RAMMB Progress Report. 09 January 2012. New Developments. New products at Boulder WFO Synthetic visible imagery GeoColor imagery without lights Still have GeoColor with lights, Low cloud/fog imagery, and Synthetic IR and water vapor imagery

dayton
Télécharger la présentation

GOES-R Proving Ground CIRA / RAMMB Progress Report

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. GOES-R Proving Ground CIRA / RAMMB Progress Report 09 January 2012

  2. New Developments • New products at Boulder WFO • Synthetic visible imagery • GeoColor imagery without lights • Still have GeoColor with lights, Low cloud/fog imagery, and Synthetic IR and water vapor imagery • Will show fog/low cloud cases from BOU WFO using this imagery • Recent comment in BOU AFD: “GeoColordid a nice job depicting area of stratus/light fog this morning” • Clouds over snow examples • BUF example from 30 Nov saved by forecaster • BOU example from 2 Dec • BOU example from 13 Dec • Other WFO news • AWIPS2 now being tested in real-time at BOU, they will be trying to put PG products into AWIPS2 • OMA now fully using AWIPS2 but PG products not online yet

  3. Low cloud/fog over snow example from BOU WFO on 2 Dec Low cloud/fog product – 1600 UTC/2 Dec Snow/cloud discrimination product – 3 color product The low cloud/fog product shows the 3 distinct areas of low clouds and fog, while the snow/cloud discriminator product also shows these 3 areas, as well as the snow cover (colored reddish). Snow cover with areas of fog and low clouds Visible image IR image

  4. Fog/Low clouds over snow: MODIS imagery case in Colorado on 13 Dec Visible image at 1730 UTC/13 Dec with cloud/vis observations A complex mix of low and upper level clouds and fog over partial snow cover

  5. Fog/Low clouds over snow case with MODIS imagery MODIS cloud/snow discriminator image at 1730 UTC/13 Dec MODIS cloud layers and snow cover discriminator image at 1735 UTC/13 Dec Both images nicely distinguish the clouds (yellow and yellow/green) from the snow cover (white). The cloud layer product additionally shows the deeper clouds (pinkish color).

  6. Cloud over snow example from BUF WFO Forwarded from Dave Zaff, BUF SOO, from a forecaster: “I found it very interesting to see snow cover on the basic IR imagery late this afternoon, so I have attached both the IR and VIS imagery from 19z. 'Sampling' over the snow cover on the IR imagery, I was getting consistent temps of -2 to -3c, and when I moved off the snow cover to the dry land, I was getting readings of +2 to +3c. After showing this to another forecaster, he went into the MODIS imagery and noted how well it was shown in both the Cloud/Snow Discriminator image and the Cloud Layer/Snow Discriminator image.”

  7. Low cloud fog example from BOU WFO case from AWIPS – 9 Dec 0215 UTC 0145 UTC Comparison of GeoColor with and without city lights and the Low cloud/fog imagery for a case of increasing low clouds and fog on the night of 9 Dec. Snow cover was widespread on the plains. 0200 UTC

  8. Low cloud fog example from BOU WFO case from AWIPS – 9 Dec 0600 UTC 0600 UTC Images are from 0600 UTC. While the verdict is still out on lights vs. no lights, we have found that at least a few forecasters feel strongly about not having the lights. This could change in the GOES-R era when a more dynamic image is used for the nighttime lights (might be interesting to see them dim, etc.). 0600 UTC

  9. Low cloud fog example from BOU WFO case from AWIPS – 9 Dec 0900 UTC 0900 UTC Images are all from 0900 UTC. The fog and low clouds are making a move on DIA (white arrow). We have had some comments from forecasters liking the very distinct color of the fog/low clouds in the GeoColor imagery. Note how the low cloud/fog imagery colors the higher clouds south of DIA, distinguishing them from lower clouds to the east and north. 0900 UTC

  10. Low cloud fog example from BOU WFO case from AWIPS – 9 Dec 1100 UTC 1100 UTC Images are all from 1100 UTC, and DIA is now down to 200 feet ceiling and a quarter mile visibility, at the southern edge of the fog. 1100 UTC

  11. Low cloud fog example from BOU WFO case from AWIPS – 9 Dec Visible Image GeoColor w/lights Images are all from 1500 UTC, which is 8 AM local time so the sun is up (sunrise around 7 AM). Conditions at DIA (white arrow) are even worse with a 100 feet ceiling and zero visibility, but both the observations and the Low cloud/fog imagery indicate that DIA is at the very southern edge of the fog. The white area south of DIA is snow cover, and in the visible imagery one cannot really delineate snow cover from clouds, but the Low cloud/fog product shows this nicely. Low cloud/fog

  12. Synthetic IR imagery showing fog/low clouds from BOU WFOon 8 November 2011 Forecaster Scott Entrekin saved images from 8 November. He noticed how the synthetic IR imagery successfully predicted an area of low clouds,which is verified here by the visible imagery and observations. The scale of the images is different, so included is a rectangle that approximately delineates the same area that encloses most of the fog and low clouds. The arrow points to the DIA. Synthetic IR (10.35) valid 1400 UTC Visible imagery (1415 UTC) Visible imagery (1500 UTC) Synthetic IR (10.35) valid 1500 UTC

More Related