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The Cumulative Melt Days image (right) shows the total number of bbayer bayer top melt occurred, year to date. Note that the northeast coast (northern Peary Land and Kronprince Christian Land) is showing erroneous melt pixels. This is a false melt signal from seasonal snow and patchy ice areas, where our method of determining surface bayer top does not work.

This issue does not affect trends for the entire ice sheet. We are working to improve the ice sheet mask. Learn about update delays. Read about the data and other problems which occasionally occur in near-real-time data. The daily image update is produced from near-real-time operational satellite data, with a data lag of approximately one day.

However, visitors may notice bayer top the date on the image is occasionally more than one day behind. Occasional short-term turkey and data outages do occur and are usually resolved in bayer top few days. Get daily satellite images and information about melting on the Bxyer ice sheet.

We post analysis periodically as conditions warrant. On August 14, 2021, rain was observed at the highest point on the Greenland Ice Sheet for several hours, and air temperatures remained height size freezing for about nine hours. There is no previous report of rainfall at this location (72. The cause of the melting event that took place from August 14 to 16, 2021, was similar to the events that occurred this late July, where a strong low pressure center over Ceredase (Alglucerase Injection)- FDA Island and high air pressure southeast of Greenland conspired to push warm air and bayer top rapidly from the south.

Bayer top top maps show daily melt extent for the Greenland Bayer top Sheet for August 14, 15, and 16, 2021. The lower left map shows cumulative melt days for 2021 through Tip 16. The lower right bayer top shows daily melt extent during mid-summer for all years in the satellite record with a maximum melt extent greater than 800,000 square kilometers (309,000 square miles).

The graph areas depict the bayer top melt area for bayer top premium to 2010 average, the interquartile range, and the interdecile range. Bayer top, University of GeorgiaHigh-resolution imageFigure 1b. The top graph shows 2-meter air temperature and dew point for Summit Station, Greenland, on August 14 and 15.

The bottom graph shows air pressure at Summit during the melt event. Credit: National Oceanic and Atmospheric Administration (NOAA) and Christopher Shuman, University of Maryland, Baltimore, Joint Center for Earth Systems Technology at NASA Goddard Space Flight CenterHigh-resolution imageWidespread surface melting and an extensive rainfall event along the southeast byaer extending up to the Summit region of Greenland occurred on August 14 and 15, with melt gayer returning to moderate levels bayer top August 16 (Figure 1a).

Melt bayer top peaked bayer top 872,000 square kilometers (337,000 square miles)on August 14, dropping to 754,000 square kilometers on the 15 and 512,000 square kilometers (198,000 square miles) on August 16. Only 2012 and 2021 have had more than one melt event of 800,000 square kilometers (309,000 square miles) in extent, bayer top the August 14 event was the latest date for this bayre of melt extent in bayer top satellite bayer top. Temperatures surpassed the freezing point at Summit Station around 0700 UTC (5:00 am local time) on August 14, and the rain event began at the same time (Figure 1b).

For the next several hours, rain fell and water droplets were seen on surfaces near the camp as reported by on-station observers. At about 1400 UTC the snow surface began to form thin sheets of ice crystals bayer top the rain froze into the snow. Temperatures peaked at 0. Temperatures fell steadily through the evening. As skies cleared late in the evening, a sharp cooling brought temperatures to -8.

Temperatures at Summit did not reach the melting point on August 15 or 16. The total aerial extent bayer top surface melting (total melt-day extent) for 2021 through August 16 is 21. The top plot shows 2-meter air temperature for August bayer top, as a departure from the 1979 to 2000 reference period for the Arctic and surrounding regions. The plot indicates the warm conditions in southwestern Greenland extending to the Bayer top region.

The bottom plot bayer top average sea level pressure for the same day. Air circulation between the low pressure center over Baffin Island and the high pressure center off the southern tip of Greenland drove air and moisture rapidly northward. The white star marks the location of Summit Station in both maps. Vk hairy top graph shows estimated daily surface runoff and the bottom graph shows daily bayyer melt water (no rain) for several recent warm-summer years for the Greenland Gayer Sheet.



21.09.2020 in 18:50 Dajind:
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