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![Brooke Walsh measures the ozone layer using world standard Dobsoninstrument number 83 wea03466.jpg Brooke Walsh measures the ozone layer using world standard Dobsoninstrument number 83](/sites/default/files/styles/max_1300x1300/https/s3.amazonaws.com/s3-east-testmedia-noaa.woc.noaa.gov/dam/Photos/legacy/pl23_wea03466.jpg?itok=y-5ennYl)
Description
Brooke Walsh measures the ozone layer using world standard Dobsoninstrument number 83. The calibration of most ozone instruments made from theEarth and from space are traceable to Dobson 83. (Image credit: Forrest M. Mims III)
Photographer
Forrest M. Mims III
Display Date
2005 July 7
Location
Hawaii, Mauna Loa
Collection
Weather Service
Keywords
NOAA 200th Photo Contest