RAINFALL DATA SET
; GLOBAL PRECIPITATION
; METEOROLOGICAL SUBDIVISIONS
; GAUGE OBSERVATIONS
; GRIDDED RAINFALL
; SATELLITE
; TMPA-3B42
; GSMAP
; LAND
; SOIL
WOS学科分类:
Engineering, Civil
; Geosciences, Multidisciplinary
; Water Resources
WOS研究方向:
Engineering
; Geology
; Water Resources
英文摘要:
Accurate long-term estimates of precipitation at fine spatiotemporal resolution are vital for several applications ranging from hydrometeorology to climatology. The availability of a good network of rain gauges, and high precipitation variability associated with two annual monsoon systems and complex topography make India a suitable test-bed to assess the performance of any satellite-based precipitation product This study assesses the performance of latest versions of four multi-satellite precipitation products: (i) Climate Hazards Group InfraRed Precipitation with Station data (CHIRPS), (ii) Multi-Source Weighted-Ensemble Precipitation (MSWEP), (iii) SM2RAIN-Climate Change Initiative (SM2RAIN-CCI), and (iv) TRMM Multisatellite Precipitation Analysis (TMPA) across India using gauge-based observations for the period of 1998-2015 at monthly scale. These four multi-satellite precipitation products are essentially based on different algorithms and input data sets. Among these multi-satellite precipitation products, SM2RAIN-CCI is the only product that does not use rain gauge observations for bias adjustment. Results indicate that CHIRPS and TMPA are comparable to gauge-based precipitation estimates at all-India and sub-regional scales followed by MSWEP estimates. However, SM2RAIN-CCI largely underestimates precipitation across the country as compared to gauge-based observations. The systematic error component in SM2RAIN-CCI dominates as compared to random error component, which suggests the need of a suitable bias correction to SM2RAIN-CCI before integrating it in any application. The overall results indicate that CHIRPS data set could be used for long-term precipitation analyses with rather higher confidence.
Indian Inst Sci, Divecha Ctr Climate Change, Bengaluru 560012, India
Recommended Citation:
Prakash, Satya. Performance assessment of CHIRPS, MSWEP, SM2RAIN-CCI, and TMPA precipitation products across India[J]. JOURNAL OF HYDROLOGY,2019-01-01,571:50-59