A Comparison of Moderate and Extreme ERA 5 Daily Precipitation With Two Observational Data Sets
International audience A comparison of moderate to extreme daily precipitation from the ERA 5 reanalysis by the European Centre for Medium Range Weather Forecasts against two observational gridded data sets, EOBS and CMORPH, is presented. We assess the co occurrence of precipitation days and compare...
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ftceafr:oai:HAL:insu-03721914v1 2024-09-15T18:14:26+00:00 A Comparison of Moderate and Extreme ERA 5 Daily Precipitation With Two Observational Data Sets Rivoire, Pauline Martius, Olivia Naveau, Philippe Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA) 2021 https://insu.hal.science/insu-03721914 https://insu.hal.science/insu-03721914/document https://insu.hal.science/insu-03721914/file/Earth%20and%20Space%20Science%20-%202021%20-%20Rivoire%20-%20A%20Comparison%20of%20Moderate%20and%20Extreme%20ERA%25u20105%20Daily%20Precipitation%20With%20Two.pdf https://doi.org/10.1029/2020EA001633 en eng HAL CCSD American Geophysical Union/Wiley info:eu-repo/semantics/altIdentifier/doi/10.1029/2020EA001633 insu-03721914 https://insu.hal.science/insu-03721914 https://insu.hal.science/insu-03721914/document https://insu.hal.science/insu-03721914/file/Earth%20and%20Space%20Science%20-%202021%20-%20Rivoire%20-%20A%20Comparison%20of%20Moderate%20and%20Extreme%20ERA%25u20105%20Daily%20Precipitation%20With%20Two.pdf BIBCODE: 2021E&SS.801633R doi:10.1029/2020EA001633 http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess ISSN: 2333-5084 EISSN: 2333-5084 Earth and Space Science https://insu.hal.science/insu-03721914 Earth and Space Science, 2021, 8, ⟨10.1029/2020EA001633⟩ ERA 5 precipitation reanalysis extended generalized Pareto distribution EOBS CMORPH [SDU]Sciences of the Universe [physics] [SDU.STU]Sciences of the Universe [physics]/Earth Sciences info:eu-repo/semantics/article Journal articles 2021 ftceafr https://doi.org/10.1029/2020EA001633 2024-07-22T13:10:56Z International audience A comparison of moderate to extreme daily precipitation from the ERA 5 reanalysis by the European Centre for Medium Range Weather Forecasts against two observational gridded data sets, EOBS and CMORPH, is presented. We assess the co occurrence of precipitation days and compare the full precipitation distributions. The co occurrence is quantified by the hit rate. An extended generalized Pareto distribution (EGPD) is fitted to the positive precipitation distribution at every grid point and confidence intervals of quantiles compared. The Kullback-Leibler divergence is used to quantify the distance between the entire EGPDs obtained from ERA 5 and the observations. For days exceeding the local 90th percentile, the mean hit rate is 65% between ERA 5 and EOBS (over Europe) and 60% between ERA 5 and CMORPH (globally). Generally, we find a decrease of the co occurrence with increasing precipitation intensity. The agreement between ERA 5 and EOBS is weaker over the southern Mediterranean region and Iceland compared to the rest of Europe. Differences between ERA 5 and CMORPH are smallest over the oceans. Differences are largest over NW America, Central Asia, and land areas between 15°S and 15°N. The confidence intervals on quantiles are overlapping between ERA 5 and the observational data sets for more than 80% of the grid points on average. The intensity comparisons indicate an excellent agreement between ERA 5 and EOBS over Germany, Ireland, Sweden, and Finland, and a disagreement over areas where EOBS uses sparse input stations. ERA 5 and CMORPH precipitation intensity agree well over the midlatitudes and disagree over the tropics. Article in Journal/Newspaper Iceland HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives) Earth and Space Science 8 4 |
institution |
Open Polar |
collection |
HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives) |
op_collection_id |
ftceafr |
language |
English |
topic |
ERA 5 precipitation reanalysis extended generalized Pareto distribution EOBS CMORPH [SDU]Sciences of the Universe [physics] [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
spellingShingle |
ERA 5 precipitation reanalysis extended generalized Pareto distribution EOBS CMORPH [SDU]Sciences of the Universe [physics] [SDU.STU]Sciences of the Universe [physics]/Earth Sciences Rivoire, Pauline Martius, Olivia Naveau, Philippe A Comparison of Moderate and Extreme ERA 5 Daily Precipitation With Two Observational Data Sets |
topic_facet |
ERA 5 precipitation reanalysis extended generalized Pareto distribution EOBS CMORPH [SDU]Sciences of the Universe [physics] [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
description |
International audience A comparison of moderate to extreme daily precipitation from the ERA 5 reanalysis by the European Centre for Medium Range Weather Forecasts against two observational gridded data sets, EOBS and CMORPH, is presented. We assess the co occurrence of precipitation days and compare the full precipitation distributions. The co occurrence is quantified by the hit rate. An extended generalized Pareto distribution (EGPD) is fitted to the positive precipitation distribution at every grid point and confidence intervals of quantiles compared. The Kullback-Leibler divergence is used to quantify the distance between the entire EGPDs obtained from ERA 5 and the observations. For days exceeding the local 90th percentile, the mean hit rate is 65% between ERA 5 and EOBS (over Europe) and 60% between ERA 5 and CMORPH (globally). Generally, we find a decrease of the co occurrence with increasing precipitation intensity. The agreement between ERA 5 and EOBS is weaker over the southern Mediterranean region and Iceland compared to the rest of Europe. Differences between ERA 5 and CMORPH are smallest over the oceans. Differences are largest over NW America, Central Asia, and land areas between 15°S and 15°N. The confidence intervals on quantiles are overlapping between ERA 5 and the observational data sets for more than 80% of the grid points on average. The intensity comparisons indicate an excellent agreement between ERA 5 and EOBS over Germany, Ireland, Sweden, and Finland, and a disagreement over areas where EOBS uses sparse input stations. ERA 5 and CMORPH precipitation intensity agree well over the midlatitudes and disagree over the tropics. |
author2 |
Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA) |
format |
Article in Journal/Newspaper |
author |
Rivoire, Pauline Martius, Olivia Naveau, Philippe |
author_facet |
Rivoire, Pauline Martius, Olivia Naveau, Philippe |
author_sort |
Rivoire, Pauline |
title |
A Comparison of Moderate and Extreme ERA 5 Daily Precipitation With Two Observational Data Sets |
title_short |
A Comparison of Moderate and Extreme ERA 5 Daily Precipitation With Two Observational Data Sets |
title_full |
A Comparison of Moderate and Extreme ERA 5 Daily Precipitation With Two Observational Data Sets |
title_fullStr |
A Comparison of Moderate and Extreme ERA 5 Daily Precipitation With Two Observational Data Sets |
title_full_unstemmed |
A Comparison of Moderate and Extreme ERA 5 Daily Precipitation With Two Observational Data Sets |
title_sort |
comparison of moderate and extreme era 5 daily precipitation with two observational data sets |
publisher |
HAL CCSD |
publishDate |
2021 |
url |
https://insu.hal.science/insu-03721914 https://insu.hal.science/insu-03721914/document https://insu.hal.science/insu-03721914/file/Earth%20and%20Space%20Science%20-%202021%20-%20Rivoire%20-%20A%20Comparison%20of%20Moderate%20and%20Extreme%20ERA%25u20105%20Daily%20Precipitation%20With%20Two.pdf https://doi.org/10.1029/2020EA001633 |
genre |
Iceland |
genre_facet |
Iceland |
op_source |
ISSN: 2333-5084 EISSN: 2333-5084 Earth and Space Science https://insu.hal.science/insu-03721914 Earth and Space Science, 2021, 8, ⟨10.1029/2020EA001633⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2020EA001633 insu-03721914 https://insu.hal.science/insu-03721914 https://insu.hal.science/insu-03721914/document https://insu.hal.science/insu-03721914/file/Earth%20and%20Space%20Science%20-%202021%20-%20Rivoire%20-%20A%20Comparison%20of%20Moderate%20and%20Extreme%20ERA%25u20105%20Daily%20Precipitation%20With%20Two.pdf BIBCODE: 2021E&SS.801633R doi:10.1029/2020EA001633 |
op_rights |
http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/2020EA001633 |
container_title |
Earth and Space Science |
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8 |
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4 |
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