Two Approaches for Determining Extreme Years of Global Atmospheric Temperature |
| |
| Authors: | Ribera P Gimeno L Gallego D García-Herrera R Hernández E de la Torre L Nieto R Calvo N |
| |
| Institution: | (1) Departamento de Ciencias Ambientales, Universidad Pablo de Olavide, 41013 Sevilla, Spain;(2) Departamento de Física Aplicada, Universidad de Vigo, 32004 Ourense, Spain;(3) Departamento de Física de la Atmósfera II, Universidad Complutense, 28040 Madrid, Spain |
| |
| 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. |
| |
| Keywords: | climate extremes global temperature climate indices |
| 本文献已被 SpringerLink 等数据库收录！ |
|
