Astronomy Picture of the Day

   [1]Discover the cosmos! Each day a different image or photograph of our
      fascinating universe is featured, along with a brief explanation
                    written by a professional astronomer.

                                2020 April 18
    [2]See Explanation. Clicking on the picture will download the highest
                        resolution version available.

                      Just Another Day on Aerosol Earth
     Model Visualization Credit: [3]NASA Earth Observatory, [4]GEOS FP,
                               Joshua Stevens

   Explanation: [5]It was just another day on aerosol Earth. For August
   23, 2018, the identification and distribution of [6]aerosols in the
   Earth's atmosphere is shown in this dramatic, planet-wide digital
   visualization. Produced in real time, the Goddard Earth Observing
   System Forward Processing ([7]GEOS FP) model relies on a combination of
   [8]Earth-observing satellite and ground-based data to calculate the
   presence of types of aerosols, tiny solid particles and liquid
   droplets, as they circulate above the entire planet. This August 23rd
   model shows black carbon particles in red from combustion processes,
   like smoke from the fires in the United States and Canada, spreading
   across large stretches of North America and Africa. Sea salt aerosols
   are in blue, swirling above threatening typhoons near South Korea and
   Japan, and the hurricane looming near Hawaii. Dust shown in purple hues
   is blowing over African and Asian deserts. The location of cities and
   towns can be found from the concentrations of lights based on satellite
   image data of the [9]Earth at night.

                      Celebrate: [10]Earth Day at Home
                    Tomorrow's picture: Saturnday Sunday
     __________________________________________________________________

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   [16]Calendar | [17]RSS | [18]Education | [19]About APOD | [20]Discuss |
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     __________________________________________________________________

    Authors & editors: [22]Robert Nemiroff ([23]MTU) & [24]Jerry Bonnell
                                 ([25]UMCP)
          NASA Official: Phillip Newman [26]Specific rights apply.
              [27]NASA Web Privacy Policy and Important Notices
                A service of: [28]ASD at [29]NASA / [30]GSFC
                           & [31]Michigan Tech. U.

References

   1. https://apod.nasa.gov/apod/archivepix.html
   2. https://apod.nasa.gov/apod/image/2004/atmosphere_geo5_2018235_eq2400.jpg
   3. https://earthobservatory.nasa.gov/
   4. https://gmao.gsfc.nasa.gov/GMAO_products/
   5. https://earthobservatory.nasa.gov/images/92654/just-another-day-on-aerosol-earth
   6. https://earthobservatory.nasa.gov/global-maps/MODAL2_M_AER_OD
   7. https://gmao.gsfc.nasa.gov/GMAO_products/
   8. https://www.nasa.gov/topics/earth/overview/index.html
   9. https://apod.nasa.gov/apod/ap170709.html
  10. https://www.nasa.gov/feature/goddard/2020/earthdayathome-with-nasa/
  11. https://apod.nasa.gov/apod/ap200417.html
  12. https://apod.nasa.gov/apod/archivepix.html
  13. https://apod.nasa.gov/apod/lib/apsubmit2015.html
  14. https://apod.nasa.gov/apod/lib/aptree.html
  15. https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search
  16. https://apod.nasa.gov/apod/calendar/allyears.html
  17. https://apod.nasa.gov/apod.rss
  18. https://apod.nasa.gov/apod/lib/edlinks.html
  19. https://apod.nasa.gov/apod/lib/about_apod.html
  20. http://asterisk.apod.com/discuss_apod.php?date=200418
  21. https://apod.nasa.gov/apod/ap200419.html
  22. http://www.phy.mtu.edu/faculty/Nemiroff.html
  23. http://www.phy.mtu.edu/
  24. https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html
  25. http://www.astro.umd.edu/
  26. https://apod.nasa.gov/apod/lib/about_apod.html#srapply
  27. https://www.nasa.gov/about/highlights/HP_Privacy.html
  28. https://astrophysics.gsfc.nasa.gov/
  29. https://www.nasa.gov/
  30. https://www.nasa.gov/centers/goddard/
  31. http://www.mtu.edu/