Elevation effects on air temperature in a topographically complex mountain valley in the Spanish Pyrenees
| Autor: | Cesar Azorin-Molina, Juan I. López-Moreno, Marina Aznarez-Balta, Samuel Buisán, Jesús Revuelto, Francisco Navarro-Serrano, Esteban Alonso-González |
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| Přispěvatelé: | Ministerio de Economía y Competitividad (España), Ministerio de Ciencia, Innovación y Universidades (España), European Commission, Agencia Estatal de Investigación (España) |
| Rok vydání: | 2020 |
| Předmět: |
Atmospheric Science
Daytime 010504 meteorology & atmospheric sciences media_common.quotation_subject 0208 environmental biotechnology 02 engineering and technology Environmental Science (miscellaneous) lcsh:QC851-999 Atmospheric sciences 01 natural sciences Air temperature complex terrain Cluster analysis Relative humidity Complex terrain 0105 earth and related environmental sciences media_common Atmospheric pressure Elevation weather types Lapse rate 15. Life on land Snow 020801 environmental engineering Weather types air temperature 13. Climate action Sky lapse rates Environmental science lcsh:Meteorology. Climatology Lapse rates cluster analysis |
| Zdroj: | ARCIMIS. Archivo Climatológico y Meteorológico Institucional (AEMET) Agencia Estatal de Meteorología (AEMET) Atmosphere Volume 11 Issue 6 Digital.CSIC. Repositorio Institucional del CSIC instname Atmosphere, Vol 11, Iss 656, p 656 (2020) |
| Popis: | Air temperature changes as a function of elevation were analyzed in a valley of the Spanish Pyrenees. We analyzed insolation, topography and meteorological conditions in order to understand how complex topoclimatic environments develop. Clustering techniques were used to define vertical patterns of air temperature covering more than 1000 m of vertical elevation change. Ten locations from the bottom of the valley to the summits were monitored from September 2016 to June 2019. The results show that (i) night-time lapse rates were between &minus 4 and &minus 2 ° C km&minus 1, while in the daytime they were from &minus 6 to &minus 4 ° 1, due to temperature inversions and topography. Daily maximum temperature lapse rates were steeper from March to July, and daily minimum temperatures were weaker from June to August, and in December. (ii) Different insolation exposure within and between the two analyzed slopes strongly influenced diurnal air temperatures, creating deviations from the general lapse rates. (iii) Usually, two cluster patterns were found (i.e., weak and steep), which were associated with stable and unstable weather conditions, respectively, in addition to high-low atmospheric pressure and low-high relative humidity. The results will have direct applications in disciplines that depend on air temperature estimations (e.g., snow studies, water resources and sky tourism, among others). |
| Databáze: | OpenAIRE |
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