Evaluating the latest imerg products in a subtropical climate: The case of paraná state, brazil

Jéssica G. Nascimento; Daniel Althoff; Helizani C. Bazame; Christopher M.U. Neale; Sergio N. Duarte; Anderson L. Ruhoff; Ivo Z. Gonçalves

doi:10.3390/rs13050906

Evaluating the latest imerg products in a subtropical climate: The case of paraná state, brazil

Jéssica G. Nascimento, Daniel Althoff, Helizani C. Bazame, Christopher M.U. Neale, Sergio N. Duarte, Anderson L. Ruhoff, Ivo Z. Gonçalves

Research output: Contribution to journal › Article › peer-review

25 Scopus citations

Abstract

The lack of measurement of precipitation in large areas using fine-resolution data is a limitation in water management, particularly in developing countries. However, Version 6 of the Integrated Multi-satellitE Retrievals for GPM (IMERG) has provided a new source of precipitation information with high spatial and temporal resolution. In this study, the performance of the GPM products (Final run) in the state of Paraná, located in the southern region of Brazil, from June 2000 to December 2018 was evaluated. The daily and monthly products of IMERG were compared to the gauge data spatially distributed across the study area. Quantitative and qualitative metrics were used to analyze the performance of IMERG products to detect precipitation events and anomalies. In general, the products performed positively in the estimation of monthly rainfall events, both in volume and spatial distribution, and demonstrated limited performance for daily events and anomalies, mainly in mountainous regions (coast and southwest). This may be related to the orographic rainfall in these regions, associating the intensity of the rain, and the topography. IMERG products can be considered as a source of precipitation data, especially on a monthly scale. Product calibrations are suggested for use on a daily scale and for time-series analysis.

Original language	English (US)
Article number	906
Pages (from-to)	1-20
Number of pages	20
Journal	Remote Sensing
Volume	13
Issue number	5
DOIs	https://doi.org/10.3390/rs13050906
State	Published - Mar 1 2021

Keywords

GPM
Performance evaluation
Precipitation
Remote sensing in hydrology

ASJC Scopus subject areas

General Earth and Planetary Sciences

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10.3390/rs13050906

Cite this

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title = "Evaluating the latest imerg products in a subtropical climate: The case of paran{\'a} state, brazil",

abstract = "The lack of measurement of precipitation in large areas using fine-resolution data is a limitation in water management, particularly in developing countries. However, Version 6 of the Integrated Multi-satellitE Retrievals for GPM (IMERG) has provided a new source of precipitation information with high spatial and temporal resolution. In this study, the performance of the GPM products (Final run) in the state of Paran{\'a}, located in the southern region of Brazil, from June 2000 to December 2018 was evaluated. The daily and monthly products of IMERG were compared to the gauge data spatially distributed across the study area. Quantitative and qualitative metrics were used to analyze the performance of IMERG products to detect precipitation events and anomalies. In general, the products performed positively in the estimation of monthly rainfall events, both in volume and spatial distribution, and demonstrated limited performance for daily events and anomalies, mainly in mountainous regions (coast and southwest). This may be related to the orographic rainfall in these regions, associating the intensity of the rain, and the topography. IMERG products can be considered as a source of precipitation data, especially on a monthly scale. Product calibrations are suggested for use on a daily scale and for time-series analysis.",

keywords = "GPM, Performance evaluation, Precipitation, Remote sensing in hydrology",

author = "Nascimento, {J{\'e}ssica G.} and Daniel Althoff and Bazame, {Helizani C.} and Neale, {Christopher M.U.} and Duarte, {Sergio N.} and Ruhoff, {Anderson L.} and Gon{\c c}alves, {Ivo Z.}",

note = "Funding Information: Acknowledgments: This study was financed in part by the Coordena{\c c}{\~a}o de Aperfei{\c c}oamento de Pessoal de N{\'i}vel Superior (CAPES–In English: Coordination of Improvement of Higher Education Personnel)—Finance code 001. Additional funding from the Daugherty Water for Food Global Institute at the University of Nebraska is also appreciated. Publisher Copyright: {\textcopyright} 2021 by the authors. Licensee MDPI, Basel, Switzerland.",

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AU - Althoff, Daniel

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AU - Neale, Christopher M.U.

AU - Duarte, Sergio N.

AU - Ruhoff, Anderson L.

AU - Gonçalves, Ivo Z.

N1 - Funding Information: Acknowledgments: This study was financed in part by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES–In English: Coordination of Improvement of Higher Education Personnel)—Finance code 001. Additional funding from the Daugherty Water for Food Global Institute at the University of Nebraska is also appreciated. Publisher Copyright: © 2021 by the authors. Licensee MDPI, Basel, Switzerland.

PY - 2021/3/1

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N2 - The lack of measurement of precipitation in large areas using fine-resolution data is a limitation in water management, particularly in developing countries. However, Version 6 of the Integrated Multi-satellitE Retrievals for GPM (IMERG) has provided a new source of precipitation information with high spatial and temporal resolution. In this study, the performance of the GPM products (Final run) in the state of Paraná, located in the southern region of Brazil, from June 2000 to December 2018 was evaluated. The daily and monthly products of IMERG were compared to the gauge data spatially distributed across the study area. Quantitative and qualitative metrics were used to analyze the performance of IMERG products to detect precipitation events and anomalies. In general, the products performed positively in the estimation of monthly rainfall events, both in volume and spatial distribution, and demonstrated limited performance for daily events and anomalies, mainly in mountainous regions (coast and southwest). This may be related to the orographic rainfall in these regions, associating the intensity of the rain, and the topography. IMERG products can be considered as a source of precipitation data, especially on a monthly scale. Product calibrations are suggested for use on a daily scale and for time-series analysis.

AB - The lack of measurement of precipitation in large areas using fine-resolution data is a limitation in water management, particularly in developing countries. However, Version 6 of the Integrated Multi-satellitE Retrievals for GPM (IMERG) has provided a new source of precipitation information with high spatial and temporal resolution. In this study, the performance of the GPM products (Final run) in the state of Paraná, located in the southern region of Brazil, from June 2000 to December 2018 was evaluated. The daily and monthly products of IMERG were compared to the gauge data spatially distributed across the study area. Quantitative and qualitative metrics were used to analyze the performance of IMERG products to detect precipitation events and anomalies. In general, the products performed positively in the estimation of monthly rainfall events, both in volume and spatial distribution, and demonstrated limited performance for daily events and anomalies, mainly in mountainous regions (coast and southwest). This may be related to the orographic rainfall in these regions, associating the intensity of the rain, and the topography. IMERG products can be considered as a source of precipitation data, especially on a monthly scale. Product calibrations are suggested for use on a daily scale and for time-series analysis.

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Evaluating the latest imerg products in a subtropical climate: The case of paraná state, brazil

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Keywords

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