MSGID: 1:317/3 635ac72c   
   PID: hpt/lnx 1.9.0-cur 2019-01-08   
   TID: hpt/lnx 1.9.0-cur 2019-01-08   
   October 27, 2022 - Snow in the Mountains of Hokkaido   
      
      snow   
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      Stormy weather and dropping temperatures brought fresh snow to the   
      Ishikari Mountains, Hokkaido, Japan in late October 2022.   
      
      The Moderate Resolution Imaging Spectroradiometer (MODIS) on board   
      NASA’s Aqua satellite acquired a true-color image of the winter-like   
      scene on October 26, the day after clouds cleared. Snow sits on the   
      highest elevations and is most abundant in Daisetsuzan National Park,   
      an area where summer is short (July to August), September is laden with   
      multi-colored leaves, and October brings the first winter snows.   
      
      True-color images use three different MODIS bands (1,4,3) to create a   
      view much like would be seen by the human eye, if we could actually see   
      from space. Scientists often use different sets of MODIS data to create   
      images that look different than human vision. Called false-color   
      images, they are helpful in highlighting various features of scientific   
      interest. In this true-color image, the mountain snow appears white and   
      so do the clouds scattered over the island. In addition, the snow   
      appears somewhat dark and grainy in some places, giving an appearance   
      much like one would see with fog. In other areas, the zig-zag patterns   
      suggest either snow on mountain peaks or fog in mountain valleys.   
      
      By selecting a false-color image that uses MODIS bands 7,2,1, it   
      becomes simple to sort out snow from cloud and fog. In this type of   
      image, snow looks bright electric blue while most clouds appear white   
      except for high, very cold cloud containing ice crystals which may be   
      tinted with light electric blue. Fog, which is low cloud, would also   
      appear white while vegetation looks green.   
      
      Thanks to the NASA Worldview App, comparing false-color and true-color   
      images are fast and easy. To see a roll-over comparison between this   
      Aqua MODIS true-color image and the same image in false-color, click   
       here.   
      
      Image Facts   
      Satellite:  Aqua   
      Date Acquired: 10/26/2022   
      Resolutions:  1km (218 KB),  500m (580.8 KB),  250m (401.4 KB)   
      Bands Used: 1,4,3   
      Image Credit: MODIS Land Rapid Response Team, NASA GSFC   
      
      
      
   https://modis.gsfc.nasa.gov/gallery/individual.php?db_date=2022-10-27   
       
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