Manual on Downloading Prognostic Meteorological Information from Earth System Grid Federation (ESGF) Web-sites
Views
0% 0
Downloads
0 0%
Open access
Citation
International Center for Agricultural Research in the Dry Areas (ICARDA). (20/6/2014). Manual on Downloading Prognostic Meteorological Information from Earth System Grid Federation (ESGF) Web-sites.
Abstract
In order to address this spatial scale problem various
methods to downscale the GCM output have been developed. These downscaling methods can be
generalized into two types: statistical and dynamical. Statistical downscaling involves deriving statistical
relationships between some large-scale predictors and the local variable of interest. Dynamical downscaling
uses mathematical representations of the physical processes that create the climate system, similar to
GCMs, applied at a higher spatial resolution than the GCMs. In this way, they are able to capture climate
phenomena not resolved by the GCMs including the influence of mountains and coastlines. Dynamical
downscaling is done with a Regional Climate Model (RCM). When downscaling future climate projections
RCMs assume that, the physical laws remain the same. Statistical downscaling techniques can also be
applied to RCM output in order to provide information at point locations.
