Investigation of Impact of Solar-terrestrial Connections on Cloudiness in Northern Asia on Remote Sensing Data
نویسنده
چکیده
On NOAA satellite data the cloudiness in Northern Asia region (80°-175°E; 40°-74°N) was obtained and the research of impact of solar-terrestrial connections on cloudiness has been carried out. The examined region was divided into three latitudinal zones (“southern” zone 40°N-56°N, “central” zone 56°N-66°N and “northern” zone 66°N-74°N) and influence of variations of cosmic rays intensity on values and latitudinal dynamics of cloudy cover in these zones were analyzed. Depending on level of geomagnetic disturbances the correlation of cloudiness with the decreases of cosmic rays intensity (Forbush-decrease) was various. It is shown that when Auroral Index (AE) was more 300 nT the sign of correlation was positive, whereas at AE<300 nT the correlation was negative. For strong Forbush-decreases, when АЕ was more 300 nT, the latitudinal displacement dependence of a cloudy cover from intensity of cosmic rays was observed.
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