Show from arctic to antarctic vast army of weather experts work for the united states combined military operations plans are contingent on ideal weather conditions tor for all lour four participating combat sections air ground sei se be i and amphibious weather plans f for 0 r air operations must include pre invasion conditions for or softening up as well as air support on the invasion day ground conditions will include soil whether or not soli soil will nul support movement 0 of heavy vehicular equipment str air stability and wind velocity tor for use of chemical warfare smokescreens smoke screens etc sea conditions must be favor avor able enough to permit the large ships to launch small craft with safety and amphibious commanders are concerned with onshore on shore and offshore winds and surf curt conditions so the hermans task is to discover conditions which will be most nearly ideal for all tour four operations and how many days such conditions will prevail plans can then be made accordingly by comparing the current days maps with the fingerprint finger print maps chosen by weather experts irom from those maps indicated by the card machine selection the past weather most nearly like that of may 15 1945 Is chosen it may have been february 23 1929 with this map and the map tor for the succeeding days in 1829 1929 the weather expert can see how the high and low pressure pre pressure ssuie groups moved can study other ms me te data |