Subj : ES Picture of the Day 09  2022
To   : All
From : Dan Richter
Date : Fri Sep 09 2022 12:01:10

 EPOD - a service of USRA

The Earth Science Picture of the Day (EPOD) highlights the diverse processes
and phenomena which shape our planet and our lives. EPOD will collect and
archive photos, imagery, graphics, and artwork with short explanatory
captions and links exemplifying features within the Earth system. The
community is invited to contribute digital imagery, short captions and
relevant links.


 Twilight Comparison at Curitiba, Brazil, Before and Post Eruption of
Hunga Tonga

   September 09, 2022

    Ep2016-07-07 e 2022-06-12 - Sol a -11 graus

   Photographer:  Fabiano Belisário Diniz
   Summary Author:  Fabiano Belisário Diniz

   Shown above is a dramatic comparison between a normal twilight and a
    volcanic twilight as observed from Curitiba, Brazil, on July 7,
   2017 (top) and on June 12, 2022 (bottom).  Ash from the  Hunga
   Tonga volcano played a major role in enhancing the  dusk colors on
   the 2022 photo. Note that both photos were taken when the sun was 11
   degrees below the horizon in Curitiba. Many places in the southern
   hemisphere, and elsewhere, have been experiencing particularly
    colorful twilights since late January, some two weeks after the
   eruption.

   Photo details: Although both photos show the same stage of twilight
   (sun at -11 degrees), the city lights appear fainter in the bottom
   photo because I used a graduated filter with the dark portion facing
   down.


   Curitiba, Brazil Coordinates: -25.4372, -49.2700

Related EPODs

    Twilight Comparison at Curitiba, Brazil, Before and Post Eruption
   of Hunga Tonga  Pollen and Flying Seeds  Volcanic Sunsets
   Observed from Mutare, Zimbabwe in 2022  Distortion of the Setting
   Moon and Lower Mock Mirage  Fogbow Observed from the Ground and from
   a Tower  Atacama Desert and Volcanic Twilight
    More...

Atmospheric Effects Links

     *  Atmospheric Optics
     *  Optic Picture of Day: Gruppo Astrofili Galileo Galilei
     *  Color and Light in Nature
     *  The Colors of Twillight and Sunset
     *  Refraction Index
     *  Image Gallery: Atmospheric Effects
     *  What is a Rainbow?

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   Earth Science Picture of the Day is a service of the  Universities
   Space Research Association.

https://epod.usra.edu
 
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