Accession Number : ADA183540

Title :   Climate Sensitivity and Long-Period Temperature Fluctuations.

Descriptive Note : Final rept. 4 Mar 86-4 Mar 87,

Corporate Author : MASSACHUSETTS INST OF TECH CAMBRIDGE CENTER FOR METEOROLOGY AND PHYSICAL OCEANOGRAPHY

Personal Author(s) : Lorenz,Edward N

PDF Url : ADA183540

Report Date : Mar 1987

Pagination or Media Count : 24

Abstract : A special low-order moist general-circulation model is found to produce long-period fluctuations in the globally averaged atmospheric temperature, resembling the variations that have occurred in the real atmosphere. We propose that the fluctuations in the model, and possibly some of those in the atmosphere, occur because the sensitivity of the diabatic heating to temperature is highly variable. We construct a much simpler model, in which the diabatic heating is given by a simple function of temperature and local planetary temperature that approximates the diabatic heating in the original model, while the advective temperature changes are represented by random numbers. The new model produces similar long-period temperature fluctuations, thereby tending to support our hypothesis. (Author)

Descriptors :   *CLIMATE, *ATMOSPHERIC TEMPERATURE, *ATMOSPHERE MODELS, ADVECTION, TEMPERATURE, HEAT TRANSFER, TEMPERATURE, THERMODYNAMIC PROPERTIES, PLANETS, LONG RANGE(TIME), VARIATIONS, NUMBERS, HYPOTHESES, EARTH ATMOSPHERE, GLOBAL, RANDOM VARIABLES

Subject Categories : Meteorology

Distribution Statement : APPROVED FOR PUBLIC RELEASE