Modelling the effect of an assumed cosmic ray-modulated global cloud cover on the terrestrial surface temperature |
| |
| Authors: | J Ramírez B Mendoza V Mendoza J Adem |
| |
| Institution: | a Instituto de Geofísica, UNAM, Ciudad Universitaria, México DF 04510, Mexico;b Centro de Ciencias de la Atmósfera, UNAM, Ciudad Universitaria, México DF 04510, Mexico |
| |
| Abstract: | We have used the thermodynamic model of the climate to estimate the effect of variations in the oceanic cloud cover on the surface temperature of the Earth in the North Hemisphere (NH) during the period 1984–1990. We assume that the variations in the cloud cover are proportional to the variation of the cosmic ray flux measured during the same period. The results indicate that the effect in the temperature is slightly noticeable when we consider the surface hemispheric temperature on July 1987, finding an average temperature anomaly between −0.06°C and −0.14°C, along a latitudinal band between 20° and 40°. The surface temperature averaged globally in the NH presents a decrease of  0.01°C in average, which is almost the same for continents and oceans. However, these values are not significant when compared to the overall variability of the time series with and without forcing. |
| |
| Keywords: | Cloud cover Cosmic rays Solar activity Temperature |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
