MSGID: 1:317/3 6446c3c6
PID: hpt/lnx 1.9.0-cur 2019-01-08
TID: hpt/lnx 1.9.0-cur 2019-01-08
April 24, 2023 - Dust over East Asia

   Dust
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   On April 21, 2023, the Moderate Resolution Imaging Spectroradiometer
   (MODIS) on board NASA’s Aqua satellite captured a true-color image of
   another pulse of dust from the Gobi Desert pouring over East Asia. Dust
   storms rising from the Gobi Desert are common, especially in the
   springtime when gusty winds sweep eastward over the desert.

   Several severe storms have blanketed China, the Korean Peninsula, and
   northern China in March and April this year. One massive storm struck
   on March 26, creating a comma-shaped blanket of tan dust that affected
   more than 500 million people in China. Another dust storm on April 11
   brought widespread air pollution, with PM10 (suspended particulate
   matter) in Beijing reported at 1,321 micrograms per cubic meter—a level
   almost 30 times the daily guideline set by the World Health
   Organization. A review of daily Aqua satellite imagery shows only one
   relatively dust-free day across the region during the first three weeks
   of April and four clear-sky days in March.

   Underneath the widespread cloud of dust, the blue waters of the Sea of
   Japan appear to be tinted with green, which is evidence of a
   phytoplankton bloom. Phytoplankton are microscopic plant-like organisms
   that live in these waters year-round and, when conditions are
   favorable, can burst into rapid growth that creates large floating
   blooms that can easily be seen from space. The minerals in dust can act
   as potent nutrients to help spur phytoplankton growth.

   Image Facts
   Satellite:  Aqua
   Date Acquired: 4/21/2023
   Resolutions:  1km (2 MB),  500m (5.3 MB),  250m (3.9 MB)
   Bands Used: 1,4,3
   Image Credit: MODIS Land Rapid Response Team, NASA GSFC



https://modis.gsfc.nasa.gov/gallery/individual.php?db_date=2023-04-24
 
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