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Showing 1 to 13 of 13 for “"IMERG"”.
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Assessment of the PMPs and Design Storms Estimated from the IMERG Satellite Precipitation Data
… Multi-satellite Retrievals for Global (IMERG) precipitation dataset to estimate probable maximum precipitation (PMP) at pixel and watershed levels, and to model design storms. The IMERG data provides an opportunity to extend PMPs and design storms in data-scarce locations. This …
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The Evolution and Distribution of Precipitation during Tropical Cyclone Landfalls using the GPM IMERG Product
… Integrated Multisatellite Retrievals for GPM (IMERG) dataset is employed to study the 2014-2020 landfalling TCP at three analysis times: pre-landfall, landfall, and post-landfall. We examine three thresholds (2, 5, and 10 mm hr-1) and use six spatial metrics (area, closure, solidity, …
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Desempenho, limitações e aprimoramento das estimativas de precipitação do IMERG sobre o Nordeste brasileiro: aplicações na Bacia do Parnaíba
… Integrated MultisatellitE Retrievals for GPM (IMERG) product standing out as one of the most prominent recent initiatives. This study assessed the ability of IMERG to reproduce key features of the precipitation regime in the basin and sought to apply robust bias correction techniques to the …
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Improving Global Satellite Precipitation Products Utilizing Machine Learning
… for Global Precipitation Measurement (GPM; IMERG; or other global precipitation products such as the Global Precipitation Climatology Project; GPCP) in high latitudes (i.e., poleward of 60°S/N). The possibility of mitigating the latency gap of satellite precipitation products through …
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Advancing the Accuracy of Watershed Analysis Across Diverse Hydrometeorological and Geologic Regimes via Classification and Analysis of GPM-IMERG Products
… Multi-satellitE Retrievals for GPM (GPM-IMERG) data, I improve the speed and accuracy of catchment identification and hydrodynamic characterization via an enhanced Empirically Constrained Hydrologic Operation (ECHO) algorithm. This research (1) establishes optimal parameter inputs for the …
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Bridging the gap : comparative analysis of a gap filling X-band radar QPE algorithms and their implications for nowcasting and hydrological modeling
… Integrated Multi-satellitE Retrievals for GPM (IMERG) showed comparable performances within 80km, with both radars surpassing IMERG estimations. However, the X-band's efficacy decreased with range. To address this, the "dynamic distance algorithm" was introduced for X-band radar QPE. This method …
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Quantifying various thunderstorm characteristics during high impact events using radar and satellite observations
… Retrievals for Global Precipitation Measurement (IMERG) and ground radar based Multi-Radar Multi-Sensor Quantitative Precipitation Estimates (MRMS) over the United States and show that the object-based storm properties are not sensitive to the observational platforms. However, there are …
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Rain and RELAMPAGO: analysis of the deep convective storms of central Argentina
… for rare events such as extreme precipitation. IMERG, TRMM 3B42, MERRA2 and ERA5 precipitation datasets were regridded to the same resolution and compared for 3-hourly heavy rainfall (99th and 99.9th percentile) in subtropical South America, which has some of the strongest convective storms on …
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From groundwater to the atmosphere: using RELAMPAGO observations and modeling to understand changes in the hydrologic cycle of southeastern South America
… for Global Precipitation Measurement-Final (IMERG-Final) performed better than other near-real-time products IMERG-Early and IMERG-Late, when compared with rain gauge estimates. The modeling component used the Weather Research and Forecasting (WRF) atmospheric model and its hydrologic …
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Integrative Analysis of Policy Changes for a Coastal Watershed: Implications for Agriculture and Ecosystem Health
… Integrated Multi-satellitE Retrievals (GPM IMERG) dataset when combined with the Generalized Likelihood Uncertainty Estimation (GLUE) technique. The second study investigates the effects of sea level rise on nitrate dynamics within the Tar-Pamlico coastal watershed, with adjustments made to …
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Spatial pattern of African Easterly Waves and their Precipitation in Northern Africa
… Retrievals for Global Precipitation Measurement (IMERG). First, a spatial filter is used to limit 2001-2021 tropical easterly waves to only waves over the northern Africa region. The resulting AEWs are then split into categories based on the level of maximum vorticity (850 hPa, 700 hPa or …
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Fine Characterization of Leafing Phenology in the Brazilian Atlantic Forest by Optical and Microwave Remote Sensing
… forest. I also gathered a historical record of IMERG rainfall data representing this study period as well as an early period (2002-2007) in order to assess the evolution in the meteorological constraints affecting the region. To characterize seasonality in each of the forest types, I modeled …
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Tropical oceanic mesoscale cold pools in observations and models
… Retrievals for Global Precipitation Measurement (IMERG) precipitation. Overall, the model-simulated global cold pool climatology is similar to RapidScat across oceanic basins, but ICON portrays a near-unimodal distribution in cold pool diurnal cycle. Environmental properties such as column water …