This blog entry will consider the synthetic IR imagery from the NSSL 4-km WRF-ARW model for 19 April 2011. There were many severe weather reports on this day: http://www.spc.noaa.gov/climo/reports/110419_rpts.html The synthetic IR imagery from the WRF-ARW model from 1200 to 2300 UTC (from the 0000 UTC 19 April 2011 model run) is given here: http://rammb.cira.colostate.edu/visit/web/19april11/loop_synthetic_ir.asp Continue Reading
For this blog entry, we’ll consider applications of the NSSL 4-km WRF-ARW model synthetic imagery towards a severe weather event that occurred on June 22, 2010. Synthetic imagery is model output that is displayed as though it is satellite imagery. Analyzing synthetic imagery has an advantage over model output fields in that the feature of Continue Reading
by Louie Grasso, Dan Lindsey, Jeff Braun Cloud tops heights, an important forecast parameter, is being generated from the NSSL 4km WRF-ARW real-time run. At CIRA we have been generating synthetic GOES-R imagery from this real-time model since spring 2010. Based on information and contact at the 14th Great Divide Workshop in Billings, MT, we have begun Continue Reading
Jeff Braun and Dan Lindsey NOAA/RAMMB CIRA/CSU ***(Also, please see addendum near the end of this message) The following are a sequence of GOES-13 visible images from 19:45 UTC on 20 July 2010 to 00:45 UTC on 21 July 2010. On 20 July 2010, a United Airlines Boeing 777 aircraft experienced severe turbulence during its Continue Reading
Jeff Braun, Louie Grasso and Dan Lindsey As part of the GOES-R Proving Ground activities, synthetic GOES-R imagery has been produced from model output run at the National Severe Storms Laboratory (NSSL). This model is being run with horizontal grid spacing of 4 km over the continental United States during the spring of 2010. An automated system Continue Reading
Jeff Braun and Louie Grasso Figures 1-4 show Modis images at 3.9, 8.53, 11.02, and 12.03 µm, respectively at 1825 UTC on 6 April 2010. Off the east coast of the United States, two ocean currents are evident in the imagery: The cool, southward flowing, Labrador current and the warm, northerly flowing, Gulf Stream. All Continue Reading
J. Braun, Louis Grasso and Don Hillger GOES-R ABI will have the ability to produce imagery at 0.47 µm (blue) and at 0.67 µm (red). Although GOES-R will be unable to produce any images at 0.555 µm (green), color imagery can still be generated with certain techniques. These techniques can be tested through the use Continue Reading
J. Braun, Louie Grasso and Don Hillger When GOES-R becomes operational, one new capability that no other GOES satellite has had to date is the ability to produce geostationary color imagery. As a result, satellite detection of pollution and/or thin smoke from wildfires can be detected (where they couldn’t in the past). GOES-R ABI will Continue Reading
Louie Grasso, Dan Lindsey, J. Braun GOES-R ABI will have several channels in the window region from which channel difference products can be produced. Three of the channels, 8.53, 11.02, and 12.03 µm are available from MODIS. From these three channels, three channel differences can be produced. In this example, one of the channel differences Continue Reading
Louie Grasso, Dan Lindsey, J. Braun Synthetic GOES-12 satellite imagery at 3.9 µm has been produced for a thunderstorm simulation. This event occurred on 27 June 2005 over the upper Midwest of the United States. Observations (Figure 1 – click image for larger format) shows warmer cloud tops (light grey) for storms over western Nebraska Continue Reading
