Validating the CMORPH Precipitation Product to Estimate High-resolution Precipitation Over the Maritime Continent Region
Abstract
In the Maritime Continent region, the measurement of various meteorological parameters is hindered by many obstacles, such as diverse topography and difficulties in the installation of observing instruments over the sea area. For parameters with high spatial and temporal variability such as rainfall, these challenges underscore the importance of remote sensing observations with adequate quality for various applications, such as the development of early warning systems for hydrometeorological disasters. Nevertheless, satellite observations in this region have several complications, particularly regarding the dominant cloud cover over this area which implies the potential of accuracy reduction from space-based observation. Precipitation product from CMORPH has the potential to provide high-resolution rainfall data in the Maritime Continent region, as it combines information obtained from infrared and microwave satellites. The estimates generated from the CMORPH product are then evaluated using hourly rainfall data at 36 rainfall observation locations in the Maritime Continent region, Indonesia in particular, in the March 2017 June 2020 period. The evaluation results show that in general, the CMORPH product detects more rainfall events albeit with lower intensity compared to the surface observations. Greater biases were also found in highland regions, which indicate the effect of topography on the performance of the CMORPH estimates. The analyses from these results are aimed to provide the initial information in using CMORPH estimates for applications of high-resolution precipitation in Indonesia.
- Publication:
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AGU Fall Meeting Abstracts
- Pub Date:
- December 2021
- Bibcode:
- 2021AGUFM.H15Q1245S