NUMERICAL INTERPRETATION OF CLOUD INFORMATION FROM METEOROLOGICAL SATELLITES.
AMERICAN METEOROLOGICAL SOCIETY BOSTON MASS
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Determination of the cloud field from the vertical motion field is a problem of long standing, and now we are concerned with the opposite problem, determination of the vertical motion field from the cloud field. This new problem has arisen in connection with meteorological satellites which provide information, basically, on radiation characteristics and on the state of the earths cloud cover. This information must be employed operationally and with maximum efficiency by meteorologists. The structure and dimensions of various cloud formations and their inherent characteristic features in various synoptic situations may be established on the basis of satellite photographs of cloud systems. It is especially important to obtain such information from regions where meteorological observations are rarely made. Many meteorologists are concerned with synoptic interpretation of information on cloud systems. This interpretation, in final analysis, amounts to a visual study of the cloud field and the introduction of corrections sometimes quite substantial into the surface chart, especially for regions where surface information is scanty or entirely lacking. Numerical forecasting requires a quantitative interpretation of cloud information, not a qualitative synoptic interpretation. In the present paper we propose a method of determining the vertical motion field from the cloud distribution.
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