Solar ultraviolet irradiance observed from southern Argentina: September 1990 to March 1991
| Autor: | David A. Neuschuler, P. F. Soulen, Timothy Lucas, C. R. Booth, John E. Frederick, Susana Beatriz Diaz, I. Smolskaia |
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| Rok vydání: | 1993 |
| Předmět: |
Atmospheric Science
Ozone Cloud cover Irradiance Soil Science Aquatic Science Oceanography Atmospheric sciences chemistry.chemical_compound Geochemistry and Petrology Polar vortex Earth and Planetary Sciences (miscellaneous) Southern Hemisphere Air mass Earth-Surface Processes Water Science and Technology Ecology Northern Hemisphere Paleontology Forestry Ozone depletion Geophysics chemistry Space and Planetary Science Climatology Environmental science |
| Zdroj: | Journal of Geophysical Research: Atmospheres. 98:8891-8897 |
| ISSN: | 0148-0227 |
| DOI: | 10.1029/93jd00030 |
| Popis: | The authors report on data which measures the solar ultraviolet irradiance between 300 and 310nm at Ushuaia, Argentina over the period Sept 1990 to Mar 1991. Ushuaia is 10[degrees] or more north of the Antarctic ozone hole, though it may or may not be in the fringe of the polar vortex. Over the Antarctic there has been an observed enhancement in solar ultraviolet irradiance on the surface of the Earth, though it has little relevance due to the sparse population density. In the northern hemisphere there has been observed an overall decrease in column ozone, but no recorded change in spectral irradiance, though there are several possible explanations for this observation. In the southern hemisphere the question of whether polar air masses could migrate north following the collapse of the polar vortex, and produce regions of depleted ozone, with consequent ultraviolet irradiance increase is looked at in this paper. Substantial increases in ultraviolet irradiance are observed from this observation period, but because of the limited data set it is difficult to say for sure that such an air mass migration was the origin. However, the net effect is still a substantial increase in solar ultraviolet irradiance, with possible biological consequences. |
| Databáze: | OpenAIRE |
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