In collaboration with the Geographic Information Network of Alaska (GINA) at the University of Alaska, NASA/SPoRT generates two VIIRS and MODIS microphysics satellite products for use by the National Weather Service in Alaska…
FAIRBANKS — A new satellite dish goes up next spring on a hillside off the Steese Highway as part weather forecast technology upgrade funded in the wake of Super Storm Sandy.
A nice writeup of an important project for UAF GINA and for near-real-time satellite data provision in Alaska. This project is taking our systems down the research-to-operations path, supporting a critical need for the NWS in Alaska.
Photo courtesy Light Trekker Studios.
MODIS Snowcover Imagery over Alaska on the Longest Day of the Year, June 21, 2014.
This image, taken at 2:17pm local time in Alaska, is a striking example of the “snowcover” product generated by combing data from three different channels of the MODIS instrument (bands 3, 6, and 7) into a single color image. This methodology yields a product that clearly shows the extent of snow-covered ground (in areas free of thick clouds) and is particularly useful in Alaska as the winter snowpack and sea ice retreat in the spring and early summer. The deep red over the Arctic Ocean north of Alaska indicates sea ice, while ice-free ocean appears black. Large “pans” of sea ice are evident, and some of the last “shore-fast” ice of the season still clings to sections of the coastline along northwest Alaska and along the northern coast of Russia’s Chukotsk Peninsula. Clouds over the Arctic Ocean that are primarily composed of liquid water appear white. Over the land, snow-free ground appears green. Given the date of late June, only the highest terrain is still covered by snow, evident here as local red areas along the Brooks Range in northern Alaska and over the higher mountain peaks of the Alaska Peninsula. The pink clouds extending from the Gulf of Alaska up through Alaska’s Interior indicate higher clouds cold enough to include ice particles. Lower-elevation warmer clouds, such as the marine stratus straddling the northern side of the Alaska Peninsula, are composed of liquid cloud droplets and appear white. Afternoons in late June often include some convective activity in Alaska, and this image shows “fair-weather cumulus” over much of western mainland Alaska, with a few of the more developed convective cells reaching elevations cold enough to begin glaciating the clouds and thus giving them a red color in this image.
The Geographic Information Network of Alaska (GINA), a facility at the University of Alaska’s Geophysical Institute in Fairbanks, Alaska, receives data from MODIS instruments via direct broadcast antennas as the Terra and Aqua satellites transit over Alaska. From these data, GINA generates a variety of products for users ranging from meteorologists at the National Weather Service in Alaska, to researchers at universities in and outside of Alaska, to the general public.
- Eric Stevens
An amazingly clear day over most of Alaska, as imaged by the Suomi NPP satellite. (7-Sept-2014 20:58 UTC. http://feeder.gina.alaska.edu/npp-gina-alaska-truecolor-images/2014_09_07_20_58_jd250)
GINA captures and distributes this data in near-real-time through the High Latitude Proving Ground with support from the NESDIS GOES-R and JPSS satellite program offices. Our flagship user is the Alaska Region National Weather Service.
Did I mention it was a truly beautiful autumn day here in Fairbanks yesterday?
SNPP and other polar orbiting satellites: GINA’s Eric Stevens giving a great explanation on the PBS show “Alaska Weather” of polar orbiting satellites, imagery, sounders, and impacts on models.
Announcing ESRI ArcGIS I: Introduction to GIS, and ArcGIS II: Tools and Functionality for ArcGIS 10.1 in during the week of August 25 - 29, 2014 here at UAF. ArcGIS I will be held on Monday and Tuesday (8/25 - 2/26/14), followed by ArcGIS II on Wednesday - Friday (8/27 - 8/29/14).