Filters: Tags: bioclimatology (X)
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The definition of desertification accepted in the ad hoc conference held by UNEP in Nairobi in 1977 and confirmed at the Earth Summit on Environment and Development held in Rio de Janeiro in 1992 is: ?arid, semi-arid and dry-subhumid land degradation?. There is no global long-term trend in any rainfall change over the period of instrumental record (c. 150 years), but there has been an increase of 0�5�C in global temperature over the past 100 years. This increase seems partly due to urbanization, as there is no evidence of it resulting from atmospheric pollution by CO2and other warming gases (SO2, NO2, CH4, CFH etc.). On the other hand, the thermal increase is uneven, increasing with latitudes above 40� N and S....
Categories: Publication;
Types: Citation,
Journal Citation;
Tags: Journal of Arid Environments,
arid lands,
bioclimatology,
desertization,
drought mitigation,
270m grids of selected bioclimatic variables used to forecast plant and animal species distributions for the California Deserts. Climate forecasts are based on the Institut Pierre-Simon Laplace (IPSL) CM5 model â RCP 8.5, for the period 2040-2069. Variables include temperature seasonality (bio4) max temperature of the warmest month (bio5), min temperature of the coldest month (bio6), annual precipitation (bio18), growing degree days (bio20), and aridity index (bio24).
Grids (270m resolution) of selected bioclimatic variables used to forecast plant and animal species distributions for the California Deserts. Climate forecasts are based on the Flexible Global Ocean-Atmosphere-Land System (FGOALS-G2) model â RCP 8.5, for the period 2040-2069. Variables include temperature seasonality (bio4) max temperature of the warmest month (bio5), min temperature of the coldest month (bio6), annual precipitation (bio18), growing degree days (bio20), and aridity index (bio24).
Bioclimatic variables include: temperature seasonality, mean maximum daily temperature of the warmest month, mean minimum daily temperature of the coldest month, annual precipitation, annual Growing Degree Days (5 deg C threshold), and aridity index. 270 m grids were were derived from downscaled PRISM data for the period 1981-2010. The grids were used to produce species distribution models for species of potential conservation concern to the Desert Renewable Energy Conservation Planning process.
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