Rainfall and rain pulse role on energy, water vapor and CO2 exchanges in a tropical semiarid environment
•Seasonality and annual values of the energy balance and CO2 exchange components are closely related to rainfall variability.•Evaporative stress index (ESI) can reach values of extreme water stress during the dry season.•Rain pulses caused systematic increases in Gs and higher CO2 absorption. Severa...
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creator | Santos e Silva, Cláudio M. Bezerra, Bergson G. Mendes, Keila R. Mutti, Pedro R. Rodrigues, Daniele Tôrres Costa, Gabriel Brito de Oliveira, Pablo Eli Soares Reis, Jean Marques, Thiago V. Ferreira, Rosaria Rodrigues Campos, Suany Ramos, Tarsila M. Vieira, Mariana M.L. de Oliveira, Ane Caroline C.F. Câmara da Silva, Clara L. Silva, Any Caroline Antonino, Antonio C.D. Menezes, Rômulo S.C. |
description | •Seasonality and annual values of the energy balance and CO2 exchange components are closely related to rainfall variability.•Evaporative stress index (ESI) can reach values of extreme water stress during the dry season.•Rain pulses caused systematic increases in Gs and higher CO2 absorption.
Several aspects of the hydrological regime influence the CO2 exchanges between the atmosphere and drylands. The objective of this study was to carry out a thorough assessment of the role of rainfall pulses on the energy fluxes, water vapor and CO2 exchanges over the Caatinga Biome using data collected in 2014 and 2015. We conducted an unprecedented analysis on the effects of precipitation pulses on the different components of the CO2 balance between the Caatinga and the atmosphere. Data was collected in a flux tower equipped with an eddy covariance system in a preserved Caatinga area in Northeast Brazil. Results showed a well defined relationship between rainfall variability and energy balance and CO2 exchange. Rain pulses caused systematic increases in surface conductance (Gs), leading to a higher CO2 absorption in the short-term. In 2014, the higher amount of rain pulse events along with higher overall rainfall amounts resulted in 68 % of total absorbed CO2 being assimilated during post-pulse events. In 2015, fewer but more intense pulses occurred, contributing to 39 % of total CO2 absorbed in the wet season. The overall effect of rain pulses on the CO2 balance over the Caatinga site in the Semiarid Brazil depends on the distribution and amount of rainfall in each pulse event. |
doi_str_mv | 10.1016/j.agrformet.2023.109829 |
format | Article |
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Several aspects of the hydrological regime influence the CO2 exchanges between the atmosphere and drylands. The objective of this study was to carry out a thorough assessment of the role of rainfall pulses on the energy fluxes, water vapor and CO2 exchanges over the Caatinga Biome using data collected in 2014 and 2015. We conducted an unprecedented analysis on the effects of precipitation pulses on the different components of the CO2 balance between the Caatinga and the atmosphere. Data was collected in a flux tower equipped with an eddy covariance system in a preserved Caatinga area in Northeast Brazil. Results showed a well defined relationship between rainfall variability and energy balance and CO2 exchange. Rain pulses caused systematic increases in surface conductance (Gs), leading to a higher CO2 absorption in the short-term. In 2014, the higher amount of rain pulse events along with higher overall rainfall amounts resulted in 68 % of total absorbed CO2 being assimilated during post-pulse events. In 2015, fewer but more intense pulses occurred, contributing to 39 % of total CO2 absorbed in the wet season. The overall effect of rain pulses on the CO2 balance over the Caatinga site in the Semiarid Brazil depends on the distribution and amount of rainfall in each pulse event.</description><identifier>ISSN: 0168-1923</identifier><identifier>EISSN: 1873-2240</identifier><identifier>DOI: 10.1016/j.agrformet.2023.109829</identifier><language>eng</language><publisher>Elsevier B.V</publisher><subject>absorption ; arid lands ; Brazil ; Caatinga ; carbon dioxide ; Ecosystem respiration ; ecosystems ; eddy covariance ; energy balance ; Evaporative stress index ; forests ; hydrology ; meteorology ; Minor storage terms ; Partitioning of CO2 fluxes ; rain ; semiarid zones ; water vapor ; wet season</subject><ispartof>Agricultural and forest meteorology, 2024-02, Vol.345, p.109829, Article 109829</ispartof><rights>2023 Elsevier B.V.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c348t-76011ea181dedc66d88c6dbe251964d62168c5dbf04fd9079b7c59d81fa121b3</citedby><cites>FETCH-LOGICAL-c348t-76011ea181dedc66d88c6dbe251964d62168c5dbf04fd9079b7c59d81fa121b3</cites><orcidid>0000-0003-4307-2832 ; 0000-0002-1566-3304 ; 0000-0001-7607-1727 ; 0000-0002-4120-9404 ; 0000-0001-8740-366X</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S0168192323005191$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3537,27901,27902,65534</link.rule.ids></links><search><creatorcontrib>Santos e Silva, Cláudio M.</creatorcontrib><creatorcontrib>Bezerra, Bergson G.</creatorcontrib><creatorcontrib>Mendes, Keila R.</creatorcontrib><creatorcontrib>Mutti, Pedro R.</creatorcontrib><creatorcontrib>Rodrigues, Daniele Tôrres</creatorcontrib><creatorcontrib>Costa, Gabriel Brito</creatorcontrib><creatorcontrib>de Oliveira, Pablo Eli Soares</creatorcontrib><creatorcontrib>Reis, Jean</creatorcontrib><creatorcontrib>Marques, Thiago V.</creatorcontrib><creatorcontrib>Ferreira, Rosaria Rodrigues</creatorcontrib><creatorcontrib>Campos, Suany</creatorcontrib><creatorcontrib>Ramos, Tarsila M.</creatorcontrib><creatorcontrib>Vieira, Mariana M.L.</creatorcontrib><creatorcontrib>de Oliveira, Ane Caroline C.F.</creatorcontrib><creatorcontrib>Câmara da Silva, Clara L.</creatorcontrib><creatorcontrib>Silva, Any Caroline</creatorcontrib><creatorcontrib>Antonino, Antonio C.D.</creatorcontrib><creatorcontrib>Menezes, Rômulo S.C.</creatorcontrib><title>Rainfall and rain pulse role on energy, water vapor and CO2 exchanges in a tropical semiarid environment</title><title>Agricultural and forest meteorology</title><description>•Seasonality and annual values of the energy balance and CO2 exchange components are closely related to rainfall variability.•Evaporative stress index (ESI) can reach values of extreme water stress during the dry season.•Rain pulses caused systematic increases in Gs and higher CO2 absorption.
Several aspects of the hydrological regime influence the CO2 exchanges between the atmosphere and drylands. The objective of this study was to carry out a thorough assessment of the role of rainfall pulses on the energy fluxes, water vapor and CO2 exchanges over the Caatinga Biome using data collected in 2014 and 2015. We conducted an unprecedented analysis on the effects of precipitation pulses on the different components of the CO2 balance between the Caatinga and the atmosphere. Data was collected in a flux tower equipped with an eddy covariance system in a preserved Caatinga area in Northeast Brazil. Results showed a well defined relationship between rainfall variability and energy balance and CO2 exchange. Rain pulses caused systematic increases in surface conductance (Gs), leading to a higher CO2 absorption in the short-term. In 2014, the higher amount of rain pulse events along with higher overall rainfall amounts resulted in 68 % of total absorbed CO2 being assimilated during post-pulse events. In 2015, fewer but more intense pulses occurred, contributing to 39 % of total CO2 absorbed in the wet season. The overall effect of rain pulses on the CO2 balance over the Caatinga site in the Semiarid Brazil depends on the distribution and amount of rainfall in each pulse event.</description><subject>absorption</subject><subject>arid lands</subject><subject>Brazil</subject><subject>Caatinga</subject><subject>carbon dioxide</subject><subject>Ecosystem respiration</subject><subject>ecosystems</subject><subject>eddy covariance</subject><subject>energy balance</subject><subject>Evaporative stress index</subject><subject>forests</subject><subject>hydrology</subject><subject>meteorology</subject><subject>Minor storage terms</subject><subject>Partitioning of CO2 fluxes</subject><subject>rain</subject><subject>semiarid zones</subject><subject>water vapor</subject><subject>wet season</subject><issn>0168-1923</issn><issn>1873-2240</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2024</creationdate><recordtype>article</recordtype><recordid>eNqFkFtLAzEQhYMoWC-_wTz64NYke38sxRsUCtL3kE1m25TdZJ1sq_33plZ89WmY4TtnOIeQO86mnPHicTtVa2w99jBOBRNpvNaVqM_IhFdlmgiRsXMyiWSV8Fqkl-QqhC1jXJRlPSGbd2Vdq7qOKmcoxoUOuy4ARd8B9Y6CA1wfHuinGgHpXg0ef9D5UlD40hvl1hBolCk6oh-sVh0N0FuF1kTx3qJ3PbjxhlzENwFuf-c1WT0_reavyWL58jafLRKdZtWYlAXjHBSvuAGji8JUlS5MAyLndZGZQsQcOjdNy7LW1Kysm1Lntal4q7jgTXpN7k-2A_qPHYRR9jZo6DrlwO-CTFnG0pyVIo1oeUI1-hAQWjmg7RUeJGfyWK3cyr9q5bFaeao2KmcnJcQgewsog7bgNBiLoEdpvP3X4xuhd4dO</recordid><startdate>20240215</startdate><enddate>20240215</enddate><creator>Santos e Silva, Cláudio M.</creator><creator>Bezerra, Bergson G.</creator><creator>Mendes, Keila R.</creator><creator>Mutti, Pedro R.</creator><creator>Rodrigues, Daniele Tôrres</creator><creator>Costa, Gabriel Brito</creator><creator>de Oliveira, Pablo Eli Soares</creator><creator>Reis, Jean</creator><creator>Marques, Thiago V.</creator><creator>Ferreira, Rosaria Rodrigues</creator><creator>Campos, Suany</creator><creator>Ramos, Tarsila M.</creator><creator>Vieira, Mariana M.L.</creator><creator>de Oliveira, Ane Caroline C.F.</creator><creator>Câmara da Silva, Clara L.</creator><creator>Silva, Any Caroline</creator><creator>Antonino, Antonio C.D.</creator><creator>Menezes, Rômulo S.C.</creator><general>Elsevier B.V</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7S9</scope><scope>L.6</scope><orcidid>https://orcid.org/0000-0003-4307-2832</orcidid><orcidid>https://orcid.org/0000-0002-1566-3304</orcidid><orcidid>https://orcid.org/0000-0001-7607-1727</orcidid><orcidid>https://orcid.org/0000-0002-4120-9404</orcidid><orcidid>https://orcid.org/0000-0001-8740-366X</orcidid></search><sort><creationdate>20240215</creationdate><title>Rainfall and rain pulse role on energy, water vapor and CO2 exchanges in a tropical semiarid environment</title><author>Santos e Silva, Cláudio M. ; Bezerra, Bergson G. ; Mendes, Keila R. ; Mutti, Pedro R. ; Rodrigues, Daniele Tôrres ; Costa, Gabriel Brito ; de Oliveira, Pablo Eli Soares ; Reis, Jean ; Marques, Thiago V. ; Ferreira, Rosaria Rodrigues ; Campos, Suany ; Ramos, Tarsila M. ; Vieira, Mariana M.L. ; de Oliveira, Ane Caroline C.F. ; Câmara da Silva, Clara L. ; Silva, Any Caroline ; Antonino, Antonio C.D. ; Menezes, Rômulo S.C.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c348t-76011ea181dedc66d88c6dbe251964d62168c5dbf04fd9079b7c59d81fa121b3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2024</creationdate><topic>absorption</topic><topic>arid lands</topic><topic>Brazil</topic><topic>Caatinga</topic><topic>carbon dioxide</topic><topic>Ecosystem respiration</topic><topic>ecosystems</topic><topic>eddy covariance</topic><topic>energy balance</topic><topic>Evaporative stress index</topic><topic>forests</topic><topic>hydrology</topic><topic>meteorology</topic><topic>Minor storage terms</topic><topic>Partitioning of CO2 fluxes</topic><topic>rain</topic><topic>semiarid zones</topic><topic>water vapor</topic><topic>wet season</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Santos e Silva, Cláudio M.</creatorcontrib><creatorcontrib>Bezerra, Bergson G.</creatorcontrib><creatorcontrib>Mendes, Keila R.</creatorcontrib><creatorcontrib>Mutti, Pedro R.</creatorcontrib><creatorcontrib>Rodrigues, Daniele Tôrres</creatorcontrib><creatorcontrib>Costa, Gabriel Brito</creatorcontrib><creatorcontrib>de Oliveira, Pablo Eli Soares</creatorcontrib><creatorcontrib>Reis, Jean</creatorcontrib><creatorcontrib>Marques, Thiago V.</creatorcontrib><creatorcontrib>Ferreira, Rosaria Rodrigues</creatorcontrib><creatorcontrib>Campos, Suany</creatorcontrib><creatorcontrib>Ramos, Tarsila M.</creatorcontrib><creatorcontrib>Vieira, Mariana M.L.</creatorcontrib><creatorcontrib>de Oliveira, Ane Caroline C.F.</creatorcontrib><creatorcontrib>Câmara da Silva, Clara L.</creatorcontrib><creatorcontrib>Silva, Any Caroline</creatorcontrib><creatorcontrib>Antonino, Antonio C.D.</creatorcontrib><creatorcontrib>Menezes, Rômulo S.C.</creatorcontrib><collection>CrossRef</collection><collection>AGRICOLA</collection><collection>AGRICOLA - Academic</collection><jtitle>Agricultural and forest meteorology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Santos e Silva, Cláudio M.</au><au>Bezerra, Bergson G.</au><au>Mendes, Keila R.</au><au>Mutti, Pedro R.</au><au>Rodrigues, Daniele Tôrres</au><au>Costa, Gabriel Brito</au><au>de Oliveira, Pablo Eli Soares</au><au>Reis, Jean</au><au>Marques, Thiago V.</au><au>Ferreira, Rosaria Rodrigues</au><au>Campos, Suany</au><au>Ramos, Tarsila M.</au><au>Vieira, Mariana M.L.</au><au>de Oliveira, Ane Caroline C.F.</au><au>Câmara da Silva, Clara L.</au><au>Silva, Any Caroline</au><au>Antonino, Antonio C.D.</au><au>Menezes, Rômulo S.C.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Rainfall and rain pulse role on energy, water vapor and CO2 exchanges in a tropical semiarid environment</atitle><jtitle>Agricultural and forest meteorology</jtitle><date>2024-02-15</date><risdate>2024</risdate><volume>345</volume><spage>109829</spage><pages>109829-</pages><artnum>109829</artnum><issn>0168-1923</issn><eissn>1873-2240</eissn><abstract>•Seasonality and annual values of the energy balance and CO2 exchange components are closely related to rainfall variability.•Evaporative stress index (ESI) can reach values of extreme water stress during the dry season.•Rain pulses caused systematic increases in Gs and higher CO2 absorption.
Several aspects of the hydrological regime influence the CO2 exchanges between the atmosphere and drylands. The objective of this study was to carry out a thorough assessment of the role of rainfall pulses on the energy fluxes, water vapor and CO2 exchanges over the Caatinga Biome using data collected in 2014 and 2015. We conducted an unprecedented analysis on the effects of precipitation pulses on the different components of the CO2 balance between the Caatinga and the atmosphere. Data was collected in a flux tower equipped with an eddy covariance system in a preserved Caatinga area in Northeast Brazil. Results showed a well defined relationship between rainfall variability and energy balance and CO2 exchange. Rain pulses caused systematic increases in surface conductance (Gs), leading to a higher CO2 absorption in the short-term. In 2014, the higher amount of rain pulse events along with higher overall rainfall amounts resulted in 68 % of total absorbed CO2 being assimilated during post-pulse events. In 2015, fewer but more intense pulses occurred, contributing to 39 % of total CO2 absorbed in the wet season. The overall effect of rain pulses on the CO2 balance over the Caatinga site in the Semiarid Brazil depends on the distribution and amount of rainfall in each pulse event.</abstract><pub>Elsevier B.V</pub><doi>10.1016/j.agrformet.2023.109829</doi><orcidid>https://orcid.org/0000-0003-4307-2832</orcidid><orcidid>https://orcid.org/0000-0002-1566-3304</orcidid><orcidid>https://orcid.org/0000-0001-7607-1727</orcidid><orcidid>https://orcid.org/0000-0002-4120-9404</orcidid><orcidid>https://orcid.org/0000-0001-8740-366X</orcidid></addata></record> |
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subjects | absorption arid lands Brazil Caatinga carbon dioxide Ecosystem respiration ecosystems eddy covariance energy balance Evaporative stress index forests hydrology meteorology Minor storage terms Partitioning of CO2 fluxes rain semiarid zones water vapor wet season |
title | Rainfall and rain pulse role on energy, water vapor and CO2 exchanges in a tropical semiarid environment |
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