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NASA Technical Reports Server (NTRS) 19910009192: SAM 2 measurement... |
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by NASA Technical Reports Server (NTRS) |
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The Stratospheric Aerosol Measurement (SAM) II sensor |
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aboard Nimbus 7 is providing 1.0 micron extinction |
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measurements of Antarctic and Arctic stratospheric |
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aerosols with a vertical resolution of 1 km. |
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Representative examples and weekly averages including |
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corresponding temperature profiles provided by NOAA for |
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the time and place of each SAM II measurement are |
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presented. Contours of aerosol extinction as a function |
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of altitude and longitude or time are plotted, and |
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aerosol optical depths are calculated for each week. |
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Typical values of aerosol extinction and stratospheric |
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optical depth in the Arctic are unusually large due to |
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the presence of material from the El Chichon volcano |
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eruption in the Spring of 1982. For example, the optical |
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depth peaked at 0.068, more than 50 times background |
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values. Typical values of aerosol extinction and |
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stratospheric optical depth in the Antarctic varied |
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considerably during this period due to the transport and |
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arrival of the material from the El Chichon eruption. For |
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example, the stratospheric optical depth varied from |
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0.002 in October 1982, to 0.021 in January 1983. Polar |
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stratospheric clouds were observed during the Arctic |
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winter, as expected. A representative sample is provided |
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of the ninth 6-month period of data to be used in |
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atmospheric and climatic studies. |
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Date Published: 2016-09-27 08:33:10 |
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Identifier: NASA_NTRS_Archive_19910009192 |
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Item Size: 73659478 |
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Language: english |
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Media Type: texts |
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