Bioclimatic variables. Climate Change Scenarios. 4th IPCC Report. Andalusia

Description

Raster (200m resolution) of bioclimatic variables: water balance, availability of time for primary production, actual evapotranspiration, aridity index, continentality index, water indices, annual and monthly ombrothermal index, drought index, thermicity index, compensated thermicity index, sum of deficits, sum of surpluses, positive temperature and thermotype, referring to the 1961-2000 climate periods (reference), 2011-2040, 2041-2070 and 2071-2099, different models (CLIMA subsystem, ERA40, CNM3, EGMAM, ECHAM, BCM2) and climate change scenarios (A1b, A2 and B1). Prepared within the framework of the Climate Change Scenarios project updated to the 4th IPPC Report. 200m resolution. Each of these raster is accompanied by the necessary information to know the characteristics of the elaboration process, databases and vectors of points and polygons, from which they have been generated. The bioclimatic variables are described below: - Water balance. Sum of the water balances at the end of each month, assuming a soil without limit of field capacity, without runoff or lateral contributions. In the monthly calculation of water balance involved precipitation, potential evapotranspiration and balance of the previous month. - Availability of time for primary production. Annual calculation of hours in which the necessary conditions for primary production are met: positive water balance and temperature greater than 7.5oC. - Real Evapotranspiration. Annual sum of real evapotranspiration. - Aridity index. Relationship between reference evapotranspiration and annual precipitation. - Continentality index. Value indicating the degree of oscillation of the average annual temperatures. - Sum of deficits. Annual sum of negative differences between precipitation and reference evapotranspiration. - Sum of surpluses. Annual sum of positive differences between precipitation and reference evapotranspiration. - Annual water index. Value indicating the annual amount of water available, based on surpluses, deficits and ETo. - Annual humidity index. Value indicating the annual amount of water available, depending on precipitation and ETo. - Positive temperature. Cumulative average temperature if greater than 0oC. - Annual and monthly ombrothermic index. Relationship between precipitation and positive temperature. - Duration of drought. Number of months in which the average temperature value is above precipitation. - Drought intensity. Area of interception between precipitation curves and average temperature, in the dry months. - Thermality index and compensated thermicity index. Value that indicates the thermicity of a place as a function of the average, maximum and average temperature. Thermotype. Climatic classification according to the compensated thermicity index.

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Tags

  • climatología
  • ideandalucia
  • bioclimatología
  • cambio-climático
  • modelo-atmosférico
  • modelos

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  • TECH

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