Nasa has recently released a video that shows changes in polar ice levels in the arctic circle between the years of 1984 and 2016. The dashed vertical line indicates the date of the latest plotted and mapped data.
Arctic sea ice reaches its minimum each september.
Nasa polar ice caps. A new nasa study says that an increase in antarctic snow accumulation that began 10000 years ago is currently adding enough ice to the continent to outweigh the increased losses from its thinning glaciers. Credit nasagoddard space flight center scientific visualization studio. And the total ice area rate of growth which he called expansion.
This graph shows the average monthly arctic sea ice extent each september since 1979 derived from satellite observations. Holland used data from nasas national snow and ice data center distributed active archive center nsidc daac to calculate the ice concentration rate of growth for each single day which he called intensification. Winter will return to the south polar region in december 2000.
Nasa homepage nasa en espanol marte en espanol mars home odyssey home. The colored map below the radar picture shows the topography of the corresponding martian terrain. September arctic sea ice is now declining at a rate of 1285 percent per decade relative to the 1981 to 2010 average.
It is the most detailed look to date at the insides of this ice cap. Sea ice extent is the integral sum of the areas of all grid cells with at least 15 ice concentration while sea ice area is the integral sum of the product of ice concentration and area of all grid cells with at least 15 ice concentration. Mars south polar cap in summer 08 dec 2002 caption and high res images available jpl image.
Nasagoddard scientific visualization studio. The polar cap from left to right is about 420 km 260 mi across. By june 2000 this pole will be in autumn and the area covered by frost will begin to grow.
In 2019 the arctic minimum sea ice covered an area of 415 million square kilometers. A new nasa study revealed that the oldest and thickest arctic sea ice is disappearing at a faster rate than the younger and thinner ice at the edges of the arctic oceans floating ice cap. The video states that a significant portion of the ice loss happened during the late 1980s and again in the 2000s.
This image top taken by the shallow radar instrument on nasas mars reconnaissance orbiter reveals the layers of ice sand and dust that make up the north polar ice cap on mars. Soon the cap will experience sunsets.
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