The effect of the total solar eclipse of 29 March 2006 on meteorological variables in Greece
| Autor: | Evangelos Gerasopoulos, I. Lisaridis, Dimitrios Melas, Christos Zerefos, M. Petrakis, Giorgos Kouvarakis, Dimitra Founda, Spyridon Lykoudis |
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| Přispěvatelé: | EGU, Publication, National Observatory of Athens (NOA), Department of Physics [Thessaloniki], Aristotle University of Thessaloniki, Department of Chemistry [Heraklion], University of Crete [Heraklion] (UOC) |
| Rok vydání: | 2007 |
| Předmět: |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean
Atmosphere Atmospheric Science [SDU.OCEAN] Sciences of the Universe [physics]/Ocean Atmosphere Solar eclipse Planetary boundary layer Cloud cover Drop (liquid) Mesoscale meteorology Lowest temperature recorded on Earth Perturbation (astronomy) Atmospheric sciences lcsh:QC1-999 lcsh:Chemistry lcsh:QD1-999 Weather Research and Forecasting Model Climatology Environmental science lcsh:Physics |
| Zdroj: | Atmospheric Chemistry and Physics Atmospheric Chemistry and Physics, European Geosciences Union, 2007, 7 (21), pp.5543-5553 Atmospheric Chemistry and Physics, Vol 7, Iss 21, Pp 5543-5553 (2007) Scopus-Elsevier |
| ISSN: | 1680-7324 1680-7316 |
| DOI: | 10.5194/acp-7-5543-2007 |
| Popis: | This paper examines the effect of the total solar eclipse of 29 March 2006 on meteorological variables across Greece. Integrated micrometeorological measurements were conducted at Kastelorizo, a small island within the path of totality, and other sites within the Greek domain, with various degrees of solar obscuration. The observations showed a dramatic reduction in the incoming global radiation and subsequent, pronounced changes in surface air temperature with the lowest temperature values occurring about 15 min after the full phase. The amplitude of the air temperature drop was not analogous to the obscuration percentage but was principally determined by the surrounding environment (mainly the sea influence), the background meteorological conditions and local cloudiness. Surface wind-speed decreased in most sites as a result of the cooling and stabilization of the atmospheric boundary layer. This perturbation provided a unique opportunity to apply a sensitivity analysis on the effect of the eclipse to the Weather Research and Forecast (WRF) numerical mesoscale meteorological model. Strong anomalies, not associated with a dynamic response, were simulated over land especially in surface air temperature. The simulated temperature drop pattern was consistent with the observations. |
| Databáze: | OpenAIRE |
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