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Spatio-Temporal Assessment of Satellite-Based Precipitation Products for Hydroclimatic Applications over Potohar Region, Pakistan
oleh: Muhammad Umer Nadeem, Muhammad Naveed Anjum, Muhammad Asif, Tahir Iqbal, Saddam Hussain, Hafiz Rana Azeem Sarwar, Akhtar Abbas
Format: | Article |
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Diterbitkan: | MDPI AG 2022-12-01 |
Deskripsi
Reliable precipitation data at appropriate resolutions are essential for crop irrigation scheduling, climate change assessments, and mitigating floods and droughts. However, information on precipitation at acceptable spatial and temporal scales is lacking in Pakistan, particularly in undulating areas such as the Potohar region. Therefore, an investigation was conducted to check the accuracies of two satellite-based precipitation products (SPPs), PERSIANN-CDR and TRMM, concerning the gauge-based data obtained from the Pakistan Metrological Department (PMD). At the pixel and regional scales, the uncertainty in satellite-based daily, monthly, and annual precipitation estimates was investigated. Statistical indices were used for the spatio-temporal assessment of SPPs. The results reveal that both SPPs performed better on the monthly and daily scales. The TRMM precipitation product was in better agreement with in situ gauge-based data (with CC > 0.7). Therefore, we recommend using TRMM data for hydro-climatic applications in the Potohar region of Pakistan.