NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
The performance of a seasonal global climatic modelA seasonal global climatic model developed by Sellers is studied. Several changes are made to correct errors in the original model and to allow its use in a time dependent simulation mode. The major changes are in the infrared radiation formulation and in the size of the time steps. The seasonal cycles of surface temperature, wind, ice, snow, albedo, horizontal heat transport, and vertical flux of solar and infrared radiation are compared to recent observations. The seasonal cycle of temperature is fairly well reproduced, but has too small an amplitude in the Northern Hemisphere high latitudes. An overestimate of albedo at the poles is found, which is related to errors in some of the other variables. The sensitivity of the model to CO2 and solar constant (O) changes is summarized. Doubling the CO2 amount causes a 2.45 K increase in global average surface temperature (T). Increasing Q by 1% increases T by 3.14K. Decreasing 0 by 1% decreases T by 4.65K. An annual average version of the model is more sensitive to changes in Q than the model with the seasonal cycle.
Document ID
19800019443
Acquisition Source
Legacy CDMS
Document Type
Thesis/Dissertation
Authors
Robock, A.
(Maryland Univ. College Park, MD, United States)
Date Acquired
August 10, 2013
Publication Date
December 1, 1979
Publication Information
Publication: WMO Climate Models: Performance, Intercomparison and Sensitivity Studies, Vol. 2
Subject Category
Meteorology And Climatology
Accession Number
80N27944
Funding Number(s)
CONTRACT_GRANT: NSG-5209
CONTRACT_GRANT: NSF OCD-74-03969
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

Available Downloads

There are no available downloads for this record.
No Preview Available