The report deals with the climate of North Vietnam, Republic of Vietnam, Laos, Cambodia, and Thailand for March. Essentially based on previously available data, however, precipitation analyses, ceilingvisibility, and upper air flow are new. Contains brief notes on the climate of Southeast Asia and the geographical features of the Republic of Vietnam, North Vietnam, Cambodia, Laos, and Thailand. Discusses the precipitation, thunderstorms, cloudiness, visibility and obstructions to vision, combined ceilingvisibility, temperature, relative humidity, surface and upper winds, miscellaneous phenomena and sea operations. Contains a station locator and topography map. Also included are charts of mean position of polar front and ICZ 117,000,000 typhoon tracks 110,000,000, sea surface currents, temperatures, frequency of breakers, sea swell 110,000,000. Monthly sunrise, sunset, morning and evening twilight data are presented for Saigon with method for adapting to other stations. Author
Supersedes Report no. 1WWSS-105-11/3 dated Jan 66, AD-478 064.