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Indian Journal of Radio & Space Physics (IJRSP) >
IJRSP Vol.40 [2011] >
IJRSP Vol.40(1) [February 2011] >
| Title: | Downscaling of NWP based meteorological variables for potential applications |
| Authors: | Singh, Devendra |
| Keywords: | Weather forecasting
Meteorological variables
Downward surface shortwave radiation (DSSR) |
| Issue Date: | Feb-2011 |
| Publisher: | NISCAIR-CSIR, India |
| PACS No.: | 92.60.Wc |
| Abstract: | A general problem with output from weather forecasting models is that
modeled variables often do not compare well with ground-based weather variables
and complex downscaling procedures are necessary to convert Numerical Weather
Prediction (NWP) weather variables into realistic weather variables on the
ground. NWP models have now firmly established as major forecasting tool and
there is increasing use of Ensemble Prediction Systems (EPS) based
probabilistic information in support of decision-making by forecasters as well
as other special users. However, the challenges in down scaling the model
forecasts, normally applicable for a grid area commensurable with the model
resolution, to a meaningful location-specific product are by no means trivial.
An attempt has been made in this study to down scale coarse resolution NWP
based meteorological parameters to fine resolution products. The meteorological
parameters considered for this study are temperature and downward surface
shortwave radiation (DSSR) as important for ecological studies at regional
scale. The comparisons have been carried out for the DSSR and temperature from
satellite with that of in situ data.
The NWP based fine grid data were found to be in good agreement with satellite
and in situ data as compared to that
of coarse resolution NWP parameters. The variations of these remapped fine grid
parameters have also been studied at local and regional scale over India. |
| Page(s): | 45-52 |
| CC License: |  CC Attribution-Noncommercial-No Derivative Works 2.5 India |
| ISSN: | 0975-105X (Online); 0367-8393 (Print) |
| Source: | IJRSP Vol.40(1) [February 2011]
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