Optimised Ground Weather Stations: India (Precip)
Gridded climate data products are majorly driven by the reading from ground stations. In that effect the number and spatial coverage of these stations are quite important. Most of the climate data products on India are based on limited number of ground stations, constraining to capture the spatial variations of climate.For instance, The Global Human Climate Network (GHCN) maintained by the National Oceanographic Association of America (NOAA) at NASA or University of Delaware Precipitation Climatology. The raw data for all these data sets are sourced from the IMD but rely on far fewer weather stations; for instance, NOAA procures data for only 45 temperature and around 300 precipitations stations across India. This is more subtle, given India is a climatically diverse country with the third highest number of climate zones (16 Köppen classification) globally.
Following analysis with IMD was dedicated to optimise number of ground weather stations. The fields include monthly and maximum rainfall in 24 hours across all months. The stations location have been geo-coded and stnadardized. The following charts are based on the
As it can seen the number of stations over the past 60 years, have been more than avg of 3-4 thousand in number. However, some of these stations are dropped over time or are discarded due to faulty reading. From the perspective of analyses, following charts shows the consistent stations across time, or in other worlds a balanced panel of stations.
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Further looking into the precipitation patterns
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