2005. doi:10.1029/2009JC005436. Credit: University of BremenHigh-resolution image. Image d in the lower right-hand corner shows the wind speed for July 29 from Climate Reanalyzer.Credit: National Snow and Ice Data Center High-resolution image. Other factors may counteract the positive influence of more light availability, namely reduced mixing of deep nutrients to the surface waters. The colors are then used to make false color images which allow us to see patterns more easily. This summer, melt onset was earlier than average over almost all of the Arctic Ocean, the exceptions being the southern portions of the Beaufort, Chukchi, and parts of the East Siberian Seas as well as the southern Hudson Bay. Danish scientists are speaking ominously of “glacier disintegration.”. Arctic sea ice extent continued to track at record low levels through the end of July, dominated by extensive open water in the East Siberian, Laptev, and Kara Seas. This is comparable to about the size of the states of Alaska, Texas, and California combined. At the same time, this region likely had relatively thin ice at the start of the melt as a result of the strong positive Arctic Oscillation over winter. Greenland is warming almost twice as fast as Antarctica, which is causing the ice to melt and raise global sea levels. 2009. Credit: Linette Boisvert and Jeffrey Miller, NASA Goddard Space Flight Center High-resolution image, Figure 5b. The cause of the polynya is upwelling of deeper warmer water, which suppresses sea ice growth (see references below). Arctic sea ice is the cap of frozen seawater blanketing most of the Arctic Ocean and neighboring seas in wintertime. Images are not available for the average or standard deviation. While ice retreated at a fast pace through the first three weeks of July, it started to slow around July 23 as the retreating ice edge approached areas of higher-concentration ice that does not melt out as readily. The latest data show that the area of melting ice this year is unusually high. The ice edge was further north than average everywhere except the southeastern Beaufort Sea, the Canadian Archipelago and the East Greenland Sea. Nevertheless, July 2020 set a new record low sea ice extent over the satellite time-period. This is the earliest in the year that the route has been free of ice, according to this data record. Looking for facts and information? This information can include how things appear, as well as their contents. Image a in the upper left-hand corner is a NASA Moderate Resolution Imaging Spectroradiometer (MODIS) composite image from NASA Worldview that shows the cyclone in Beaufort Sea region on July 29. ... During the Greenland Ice Sheet melting season of roughly 30 days a very large proportion of the 1.7KM 3 of upper surface melt … The Associated Press reports that last year, in 2019 alone, Greenland lost an unprecedented amount of ice, enough to cover all of California in over 4 feet of water. Figure 6. Read their blog ... Icelights: Answers to your burning questions about ice and climate. © 2019, National Snow and Ice Data Center :: Advancing knowledge of Earth's frozen regions, Exchange for Local Observations and Knowledge of the Arctic (ELOKA), NASA Distributed Active Archive Center at NSIDC (NSIDC DAAC), All About Arctic Climatology & Meteorology, Sea Ice Index (Passive microwave satellite data), MASIE (Daily sea ice extent, multi-source). Journal of Geophysical Research: Oceans. Zoom in to any area on the chart by clicking and dragging your mouse. Researchers examined these competing effects using a combination of direct observations on light and phytoplankton biomass together with satellite-derived estimates of chlorophyll a (Chl a) and sea ice concentration. Image c in the lower left-hand corner shows the surface pressure from Climate Reanalyzer for July 29. Snow, ice sheets, glaciers, sea ice and permafrost, known as the cryosphere, act as Earth’s thermostat and freezer, regulating temperatures by reflecting heat from the Sun and storing almost two-thirds of our fresh water. Follow him on Twitter at @jricole or the Informed Comment Facebook Page, 42 square mile block of ice has just hived off, Muhammad: Prophet of Peace amid the Clash of Empires. Comiso, J. C. and A. L.  Gordon. They are becoming unmoored. This was 2.19 million square kilometers (846,000 square miles) below the 1981 to 2010 July average and 310,000 square kilometers (120,000 square miles) below the previous record low mark for July set in 2019. 2020 is shown in blue, 2019 in green, 2018 in orange, 2017 in brown, 2016 in purple, and 2012 in dashed red. The study was able to determine that increases in net primary productivity from 1998 to 2018 were not only a result of changes in open water fraction, but also a result of changes in nutrient availability. They anchor the West Antarctic Ice Shelf. Overall, primary production of the Arctic Ocean has increased 57 percent between 1998 and 2018.

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