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Precipitation, cloud cover and Forbush decreases in galactic cosmic rays

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posted on 2023-06-07, 14:34 authored by Dominic KnivetonDominic Kniveton
The results of a study to explore variations in cloud cover, over regions that are minimally affected by rainfall and heavy rainfall, and that are coincident with variations in the galactic cosmic ray flux, are presented. Using an extensive record of global satellite derived cloud and rainfall products from the International Satellite Cloud Climatology Project (ISCCP) D1 data series and Xie and Arkin (1996), epoch superposition analysis of a sample of events of short term decreases in the galactic cosmic ray flux, is conducted. Analysis of data that is largely free from the influence of rainfall and heavy rainfall, averaged over 10-degree geomagnetic latitude (?) bands reveals that cloud cover is reduced at high latitudes, and at middle and lower (including equatorial) latitudes over regions of relatively higher cloud cover, over both land and ocean surfaces, while increasing over ocean surfaces at middle and lower latitudes in regions of thinner cloud.

History

Publication status

  • Published

Journal

Journal of Atmospheric and Terrestrial Physics

ISSN

1364-6826

Publisher

Elsevier

Issue

13-14

Volume

66

Page range

1135-1142

Department affiliated with

  • Geography Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2008-01-22

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