Ocean monitoring indicator (OMI) of the copernicus marine environment monitoring service global yearly pH time series GLOBAL_OMI_HEALTH_carbon_ph_area_averaged
Ocean acidification is quantified by decreases in pH, which is a measure of acidity: a decrease in pH value means an increase in acidity, that is, acidification. The observed decrease in ocean pH resulting from increasing concentrations of CO2 is an important indicator of global change. The estimate...
Main Authors: | , , |
---|---|
Other Authors: | , , , , |
Format: | Report |
Language: | English |
Published: |
HAL CCSD
2021
|
Subjects: | |
Online Access: | https://hal.science/hal-03826371 https://hal.science/hal-03826371v2/document https://hal.science/hal-03826371v2/file/CMEMS-OMI-QUID-GLO-HEALTH-carbon-ph-area-averaged.pdf |
id |
ftinsu:oai:HAL:hal-03826371v2 |
---|---|
record_format |
openpolar |
spelling |
ftinsu:oai:HAL:hal-03826371v2 2024-04-28T08:34:51+00:00 Ocean monitoring indicator (OMI) of the copernicus marine environment monitoring service global yearly pH time series GLOBAL_OMI_HEALTH_carbon_ph_area_averaged Chau, Thi Tuyet Trang Gehlen, Marion Chevallier, Frederic 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) 83-CMEMSTAC-MOB contract LSCE 2021-12-31 https://hal.science/hal-03826371 https://hal.science/hal-03826371v2/document https://hal.science/hal-03826371v2/file/CMEMS-OMI-QUID-GLO-HEALTH-carbon-ph-area-averaged.pdf en eng HAL CCSD hal-03826371 https://hal.science/hal-03826371 https://hal.science/hal-03826371v2/document https://hal.science/hal-03826371v2/file/CMEMS-OMI-QUID-GLO-HEALTH-carbon-ph-area-averaged.pdf info:eu-repo/semantics/OpenAccess https://hal.science/hal-03826371 [Research Report] LSCE. 2021 [STAT.AP]Statistics [stat]/Applications [stat.AP] [SDE]Environmental Sciences info:eu-repo/semantics/report Reports 2021 ftinsu 2024-04-05T00:29:02Z Ocean acidification is quantified by decreases in pH, which is a measure of acidity: a decrease in pH value means an increase in acidity, that is, acidification. The observed decrease in ocean pH resulting from increasing concentrations of CO2 is an important indicator of global change. The estimate of global mean pH builds on a reconstruction methodology, *Obtain values for alkalinity based on the so-called “locally interpolated alkalinity regression (LIAR)” method after Carter et al., 2016; 2018. *Build on surface ocean partial pressure of carbon dioxide (CMEMS product: MULTIOBS_GLO_BIO_CARBON_SURFACE_REP_015_008) obtained from an ensemble of Feed-Forward Neural Networks (Chau et al. 2021) which exploit sampling data gathered in the Surface Ocean CO2 Atlas (SOCAT) (https://www.socat.info/) *Derive a gridded field of ocean surface pH based on the van Heuven et al., (2011) CO2 system calculations using reconstructed pCO2 (MULTIOBS_GLO_BIO_CARBON_SURFACE_REP_015_008) and alkalinity. The global mean average of pH at yearly time steps is then calculated from the gridded ocean surface pH field. It is expressed in pH unit on the total hydrogen ion scale Report Ocean acidification Institut national des sciences de l'Univers: HAL-INSU |
institution |
Open Polar |
collection |
Institut national des sciences de l'Univers: HAL-INSU |
op_collection_id |
ftinsu |
language |
English |
topic |
[STAT.AP]Statistics [stat]/Applications [stat.AP] [SDE]Environmental Sciences |
spellingShingle |
[STAT.AP]Statistics [stat]/Applications [stat.AP] [SDE]Environmental Sciences Chau, Thi Tuyet Trang Gehlen, Marion Chevallier, Frederic Ocean monitoring indicator (OMI) of the copernicus marine environment monitoring service global yearly pH time series GLOBAL_OMI_HEALTH_carbon_ph_area_averaged |
topic_facet |
[STAT.AP]Statistics [stat]/Applications [stat.AP] [SDE]Environmental Sciences |
description |
Ocean acidification is quantified by decreases in pH, which is a measure of acidity: a decrease in pH value means an increase in acidity, that is, acidification. The observed decrease in ocean pH resulting from increasing concentrations of CO2 is an important indicator of global change. The estimate of global mean pH builds on a reconstruction methodology, *Obtain values for alkalinity based on the so-called “locally interpolated alkalinity regression (LIAR)” method after Carter et al., 2016; 2018. *Build on surface ocean partial pressure of carbon dioxide (CMEMS product: MULTIOBS_GLO_BIO_CARBON_SURFACE_REP_015_008) obtained from an ensemble of Feed-Forward Neural Networks (Chau et al. 2021) which exploit sampling data gathered in the Surface Ocean CO2 Atlas (SOCAT) (https://www.socat.info/) *Derive a gridded field of ocean surface pH based on the van Heuven et al., (2011) CO2 system calculations using reconstructed pCO2 (MULTIOBS_GLO_BIO_CARBON_SURFACE_REP_015_008) and alkalinity. The global mean average of pH at yearly time steps is then calculated from the gridded ocean surface pH field. It is expressed in pH unit on the total hydrogen ion scale |
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) 83-CMEMSTAC-MOB contract LSCE |
format |
Report |
author |
Chau, Thi Tuyet Trang Gehlen, Marion Chevallier, Frederic |
author_facet |
Chau, Thi Tuyet Trang Gehlen, Marion Chevallier, Frederic |
author_sort |
Chau, Thi Tuyet Trang |
title |
Ocean monitoring indicator (OMI) of the copernicus marine environment monitoring service global yearly pH time series GLOBAL_OMI_HEALTH_carbon_ph_area_averaged |
title_short |
Ocean monitoring indicator (OMI) of the copernicus marine environment monitoring service global yearly pH time series GLOBAL_OMI_HEALTH_carbon_ph_area_averaged |
title_full |
Ocean monitoring indicator (OMI) of the copernicus marine environment monitoring service global yearly pH time series GLOBAL_OMI_HEALTH_carbon_ph_area_averaged |
title_fullStr |
Ocean monitoring indicator (OMI) of the copernicus marine environment monitoring service global yearly pH time series GLOBAL_OMI_HEALTH_carbon_ph_area_averaged |
title_full_unstemmed |
Ocean monitoring indicator (OMI) of the copernicus marine environment monitoring service global yearly pH time series GLOBAL_OMI_HEALTH_carbon_ph_area_averaged |
title_sort |
ocean monitoring indicator (omi) of the copernicus marine environment monitoring service global yearly ph time series global_omi_health_carbon_ph_area_averaged |
publisher |
HAL CCSD |
publishDate |
2021 |
url |
https://hal.science/hal-03826371 https://hal.science/hal-03826371v2/document https://hal.science/hal-03826371v2/file/CMEMS-OMI-QUID-GLO-HEALTH-carbon-ph-area-averaged.pdf |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
https://hal.science/hal-03826371 [Research Report] LSCE. 2021 |
op_relation |
hal-03826371 https://hal.science/hal-03826371 https://hal.science/hal-03826371v2/document https://hal.science/hal-03826371v2/file/CMEMS-OMI-QUID-GLO-HEALTH-carbon-ph-area-averaged.pdf |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1797591396074389504 |