End of the Day (EOD) Judgment for Daily Rain-Gauge Data

Atmosphere

Minami Masuda¹  Akiyo Yatagai¹  Mio Maeda¹  Sunilkumar Khadgarai²  Pingping Xie³ 

[1] Graduate School of Science and Technology, Hirosaki University, Hirosaki 036-8152, Japan;Indian Institute of Tropical Meteorology (IITM), Pune 411 008, India;NOAA/Climate Prediction Center, College Park, MD 20740, USA;

关键词: APHRODITE;    precipitation;    accumulation period;    GSOD;    CMORPH;    ERA-Interim;   

DOI  :  10.3390/atmos11080772

来源: DOAJ

【 摘 要 】

Several versions of Asian Precipitation-Highly-Resolved Observational Data Integration Towards Evaluation of Extreme Events (APHRODITE-2) have been released for analyzing rain-gauge-based daily precipitation. APHRODITE-2 constitutes an improvement compared with the previous versions for evaluating extreme precipitation. One advantage of APHRODITE-2 products (versions 1801R1 and 1901) over APHRODITE-1 products is the ability to ensure uniformity in the daily accumulation period (end of the day, EOD) used in a specific domain. To create these EOD segregated or EOD adjusted products, we applied an EOD judgment scheme using multi-satellite merged precipitation products CMORPH V1.0 and ERA-Interim reanalysis. The novelty of the current methodology was tested against rain-gauge datasets with known EOD information. Despite the difference in horizontal resolution, ERA-Interim shows similar EOD detection performance to CMORPH. However, CMORPH showed better performance over India than ERA-Interim. The current method has potential to judge EOD of rain-gauge station data with an unknown observation time. Having prior EOD information as metadata is very important for gridded datasets as well as station data. Here, we also present deterministic/estimated EOD that we used for V1801R1 over Monsoon Asia.

【 授权许可】

Unknown