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GISS Analysis of Surface Temperature ChangesWe describe the current GISS analysis of surface temperature change based primarily on meteorological station measurements. The global surface temperature in 1998 was the warmest in the period of instrumental data. The rate of temperature change is higher in the past 25 years than at any previous time in the period of instrumental data. The warmth of 1998 is too large and pervasive to be fully accounted for by the recent El Nino, suggesting that global temperature may have moved to a higher level, analogous to the increase that occurred in the late 1970s. The warming in the United States over the past 50 years is smaller than in most of the world, and over that period there is a slight cooling trend in the Eastern United States and the neighboring Atlantic ocean. The spatial and temporal patterns of the temperature change suggest that more than one mechanism is involved in this regional cooling.
Document ID
19990042165
Document Type
Preprint (Draft being sent to journal)
Authors
Hansen, J. (NASA Goddard Space Flight Center Greenbelt, MD United States)
Ruedy, R. (NASA Goddard Space Flight Center Greenbelt, MD United States)
Glascoe, J. (NASA Goddard Space Flight Center Greenbelt, MD United States)
Sato, M. (NASA Goddard Space Flight Center Greenbelt, MD United States)
Date Acquired
September 6, 2013
Publication Date
January 1, 1999
Subject Category
Environment Pollution
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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