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Two approaches for determining extreme years of global atmospheric temperature

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Calvo Fernández, Natalia and Ribera, P. and Gimeno, L. and Gallego, D. and García Herrera, Ricardo and Hernández, E. and Torre, L. de la and Nieto, R. (2004) Two approaches for determining extreme years of global atmospheric temperature. Studia Geophysica et Geodaetica, 48 (2). pp. 447-458. ISSN 0039-3169

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Official URL: http://dx.doi.org/10.1023/B:SGEG.0000020840.15909.37




Abstract

Two different groups of indices have been defined to analyze the evolution of global temperature between 1958 and 1998. All the indices were evaluated at three different levels (850, 500 and 200 hPa), and averaged indices were calculated using the whole globe, continental areas and oceanic areas. The first group of indices analyzes the area of the world covered with higher and lower than normal temperatures, detecting a slight cooling in the 200 hPa level. The second group of indices studies the annual frequency of extreme events, and again, it is at 200 hPa where the most intense variation is detected. Finally, an analysis is performed to determine the regions most sensible to variations in the occurrence of extreme events. Tropical areas are mostly responsible of the variations detected in the second group of indices.


Item Type:Article
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© 2004 StudiaGeo s.r.o.

Uncontrolled Keywords:Surface Air-Temperature, Trends, Troposphere, Reanalysis, Indexes
Subjects:Sciences > Physics > Astrophysics
Sciences > Physics > Astronomy
Sciences > Physics > Atmospheric physics
ID Code:25688
Deposited On:04 Jun 2014 08:14
Last Modified:10 Dec 2018 15:05

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