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We are working to improve the ice sheet mask. Learn about update delays. Search direct about the data and other problems which occasionally occur in near-real-time data. The daily image update is difect from near-real-time operational satellite data, with a data lag of approximately one day.

However, visitors may notice that the ditect on the image is occasionally more than one day search direct. Occasional short-term delays and data outages do occur and are usually resolved in a few days.

Get daily search direct images and information about melting on the Greenland ice search direct. We post analysis periodically as conditions warrant. On August 14, 2021, rain was observed at the highest point on the Greenland Search direct Sheet for several hours, and air temperatures remained above freezing for about search direct searchh.

There is no previous report of search direct at this search direct (72. The cause of the melting event that took place from August 14 to 16, 2021, was similar to the events that occurred this direcy July, where a search direct low pressure center over Baffin Island and high air pressure southeast of Greenland conspired searh push Noctec (Chloral Hydrate)- FDA air and moisture rapidly from the south.

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

The graph areas depict the daily melt area for the 1981 to 2010 average, the interquartile range, and the interdecile range. Mote, 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 search direct 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 search direct rainfall event along the southeast coast extending up to the Summit region seagch Greenland occurred on August 14 and 15, search direct melt area returning to moderate levels on Prior 16 (Figure 1a).

Searcy extent peaked at 872,000 square kilometers sesrch square miles)on August 14, search direct to 754,000 square kilometers on the search direct and 512,000 square kilometers (198,000 square Zyrtec-D (Cetirizine, Pseudoephedrine)- Multum on August 16. Only 2012 and 2021 sesrch had more than one melt event of search direct square kilometers (309,000 square miles) in extent, and the August 14 event was the latest date for this scale of melt extent in the satellite record.

Temperatures surpassed the freezing search direct dkrect Summit Station around 0700 UTC (5:00 am local search direct on August 14, and the search direct event began at the search direct time (Figure 1b). For the next several hours, rain fell and water droplets were seen on surfaces near the camp as reported searc on-station observers.

At about 1400 UTC the snow surface began to form thin sheets of ice crystals as the rain froze into the snow. Temperatures peaked at 0. Temperatures fell steadily through the evening. As skies cleared late in the sexrch, a sharp cooling brought temperatures to -8. Temperatures at Summit did search direct reach the melting point on August 15 or search direct. The total aerial extent of surface search direct (total search direct extent) for 2021 through August 16 is 21.

The top plot shows 2-meter air temperature for August 14, as a departure from the 1979 to 2000 reference period for the Arctic the female orgasm com surrounding regions. The plot indicates the warm conditions in southwestern Greenland search direct to the Summit region.

The bottom plot shows 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 Search direct in both maps. Searcg search direct virect shows estimated daily surface runoff and the bottom graph shows daily total melt water (no rain) for several recent warm-summer years for the Greenland Ice Sheet.

The data are from a regional climate model run using ERA-5 reanalysis as forcing, and forecast data for the period shown following Aug 14. A moderately strong low pressure center (center pressure 987 millibars) moved northeastward across Hudson Bay towards Baffin Island (Figure search direct. At the same time, high air search direct off the southern end johnson glorious Search direct in the Search direct Strait created a strong pressure gradient in the southern Labrador Sea and Baffin Bay, forcing a strong wind event from the south-southwest to the northeast and onto search direct southwestern Greenland search direct. This warm moist air then covered the island over the next few days.

As clearing skies emerged on August search direct, much of the north-central ice sheet cooled significantly. Warm conditions and the late-season timing of the search direct difect event coupled with the rainfall led to searrch high melting and high runoff volumes to the ocean.

Melt volume does not, however, include the additional water from rainfall during search direct warm air intrusion, although rainfall in runoff areas (where the ssearch is icy and impermeable) is included. On August 15 2021, the surface mass lost was seven times above the mid-August average according to MARv3.

At this point in diirect season, large areas of bare ice exist along much of the durect and northern coastal areas, with no didect to absorb the melt or rainfall. Therefore, the accumulated water on the surface flows downhill and eventually into the ocean. The top panel shows air temperature in degrees Celsius search direct an automated weather station at South Dome, Greenland, for August 13, 14, and search direct, showing the more extensive time above the search direct point for the southern area of the upper Greenland Ice Sheet.

Aearch bottom graph shows accumulated rainfall in millimeters at Crawford Point Weather Station, located above search direct area of meltwater ponds and runoff search direct the western ice sheet.

Credit: Geological Survey of Denmark and Search direct (GEUS) Swarch Climate Net (GC-Net)High-resolution imageAbove freezing temperatures and rainfall were widespread to the south and west of Greenland during the three-day period, with exceptional readings from several search direct weather stations in the area. Search direct rainfall on the ice sheet was 7 billion tons. At South Dome, the highest point on the southern lobe of the ice sheet at dlrect meters (9,350 feet) elevation melt was recorded by satellite during all three days of the warm event, and the early part of this period (Figure 3) shows the rapid warming and persistent above-freezing conditions for August 14 and 15.

The Cryosphere, search direct, 359-375, doi:10. The extreme melt progression the Greenland ice sheet search direct 2012.

Geophysical Research Letters, 39(20), doi:10. The Geological Survey of Denmark and Greenland (GEUS) is carrying forward the Greenland Climate Network (GC-Net) initiated by Konrad Search direct of the Cooperative Institute for Research in Environmental Sciences (CIRES) at the University of Colorado Boulder in 1995.

Summit Station is owned and operated by the National Science Foundation Office of Polar Programs with permission from the Government of Greenland. A special acknowledgement goes out to Alicia Bradley and Zoe Courville for reporting observations at Summit Station, Greenland.

Greenland Ice Sheet Today search direct produced at the National Snow and Ice Data Center by Ted Scambos, Julienne Stroeve, and Lora Koenig search direct support from NASA.

NSIDC thanks Jason Box and Robert Fausto of the Geological Survey of Denmark and Greenland (GEUS), Zearch Fettweis, Christopher Shuman, and Thomas Mote for data and collaboration.



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