During this period, an intense foehn event, where dry and warm winds cascade on the downwind side of a mountain, was observed along the eastern Peninsula.Ĭredit: National Centers for Environmental Prediction (NCEP) Reanalysis data, National Center for Atmospheric ResearchĪntarctic climate conditions for the second half of the melt season this year, January 1 to February 15 (Figures 2a and 2b), have been driven primarily by a strong Amundsen Sea Low that is positioned westward of its usual location. This plot shows average sea level pressure for the Antarctic Peninsula from February 6 to 10, 2022. The Ross and Ronne Ice Shelves and the Wilkes and Adelie region had only small regions of surface melting. Other isolated areas of coastal East Antarctica also had above average melting, such as the West and Shackleton Ice Shelves. In the Maud and Enderby region, melting was particularly frequent on the Roi Baudouin Ice Shelf, an area prone to widespread melt flooding, although only a few melt ponds appeared this year. The number of surface melt days was above average over most of the Antarctic Peninsula and over the Dronning Maud Land and Enderby Land region, but below average in the Amery Ice Shelf and Amundsen-Bellingshausen regions (Figures 1a and 1b). (The NSIDC science team will now be using this new 30-year reference period for Antarctica Today and Greenland Today). Mote, University of GeorgiaĪntarctic surface melting through February 13 has been near average for the continent as a whole relative to the 1991 to 2020 reference period. As shown in Figure 1a, surface melting is limited to near-coastal areas everywhere except the Antarctic Peninsula this year.Ĭredit: L. These graphs show regional daily melt extent for seven Antarctic regions. We post analysis periodically as conditions warrant.Ĭlick an image for a high-resolution version.įigure 1b. Get daily satellite images and information about melting on the Greenland ice sheet. Occasional short-term delays and data outages do occur and are usually resolved in a few days. However, visitors may notice that the date on the image is occasionally more than one day behind. The daily image update is produced from near-real-time operational satellite data, with a data lag of approximately one day. The daily image update isn’t current why? Read about the data and other problems which occasionally occur in near-real-time data. We are working to improve the ice sheet mask. This issue does not affect trends for the entire ice sheet. This is a false melt signal from seasonal snow and patchy ice areas, where our method of determining surface melting does not work. Note that the northeast coast (northern Peary Land and Kronprince Christian Land) is showing erroneous melt pixels. The Cumulative Melt Days image (right) shows the total number of days that melt occurred, year to date.Īreas along the coast are masked out because the satellite sensor’s resolution is not fine enough to distinguish ice from land when a pixel overlaps the coast. The Daily Melt image (left) shows where the surface of the Greenland Ice Sheet showed melt on that day. The Greenland melt images here are updated daily, with a one-day lag.
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