@article{Rafat-2022-The,
title = "The definition of the non-growing season matters: a case study of net ecosystem carbon exchange from a Canadian peatland",
author = "Rafat, Arash and
Byun, Eunji and
Rezanezhad, Fereidoun and
Quinton, William L. and
Humphreys, Elyn and
Webster, Kara and
Cappellen, Philippe Van",
journal = "Environmental Research Communications, Volume 4, Issue 2",
volume = "4",
number = "2",
year = "2022",
publisher = "IOP Publishing",
url = "https://gwf-uwaterloo.github.io/gwf-publications/G22-9001",
doi = "10.1088/2515-7620/ac53c2",
pages = "021003",
abstract = "Abstract Climate change is a threat to the 500 Gt carbon stored in northern peatlands. As the region warms, the rise in mean temperature is more pronounced during the non-growing season (NGS, i.e., winter and parts of the shoulder seasons) when net ecosystem loss of carbon dioxide (CO 2 ) occurs. Many studies have investigated the impacts of climate warming on NGS CO 2 emissions, yet there is a lack of consistency amongst researchers in how the NGS period is defined. This complicates the interpretation of NGS CO 2 emissions and hinders our understanding of seasonal drivers of important terrestrial carbon exchange processes. Here, we analyze the impact of alternative definitions of the NGS for a peatland site with multiple years of CO 2 flux records. Three climatic parameters were considered to define the NGS: air temperature, soil temperature, and snow cover. Our findings reveal positive correlations between estimates of the cumulative non-growing season net ecosystem CO 2 exchange (NGS-NEE) and the length of the NGS for each alternative definition, with the greatest proportion of variability explained using snow cover ( R 2 = 0.89, p {\textless} 0.001), followed by air temperature ( R 2 = 0.79, p {\textless} 0.001) and soil temperature ( R 2 = 0.54, p = 0.006). Using these correlations, we estimate average daily NGS CO 2 emitted between 1.42 and 1.90 gCO 2 m −2 , depending on which NGS definition is used. Our results highlight the need to explicitly define the NGS based on available climatic parameters to account for regional climate and ecosystem variability.",
}
<?xml version="1.0" encoding="UTF-8"?>
<modsCollection xmlns="http://www.loc.gov/mods/v3">
<mods ID="Rafat-2022-The">
<titleInfo>
<title>The definition of the non-growing season matters: a case study of net ecosystem carbon exchange from a Canadian peatland</title>
</titleInfo>
<name type="personal">
<namePart type="given">Arash</namePart>
<namePart type="family">Rafat</namePart>
<role>
<roleTerm authority="marcrelator" type="text">author</roleTerm>
</role>
</name>
<name type="personal">
<namePart type="given">Eunji</namePart>
<namePart type="family">Byun</namePart>
<role>
<roleTerm authority="marcrelator" type="text">author</roleTerm>
</role>
</name>
<name type="personal">
<namePart type="given">Fereidoun</namePart>
<namePart type="family">Rezanezhad</namePart>
<role>
<roleTerm authority="marcrelator" type="text">author</roleTerm>
</role>
</name>
<name type="personal">
<namePart type="given">William</namePart>
<namePart type="given">L</namePart>
<namePart type="family">Quinton</namePart>
<role>
<roleTerm authority="marcrelator" type="text">author</roleTerm>
</role>
</name>
<name type="personal">
<namePart type="given">Elyn</namePart>
<namePart type="family">Humphreys</namePart>
<role>
<roleTerm authority="marcrelator" type="text">author</roleTerm>
</role>
</name>
<name type="personal">
<namePart type="given">Kara</namePart>
<namePart type="family">Webster</namePart>
<role>
<roleTerm authority="marcrelator" type="text">author</roleTerm>
</role>
</name>
<name type="personal">
<namePart type="given">Philippe</namePart>
<namePart type="given">Van</namePart>
<namePart type="family">Cappellen</namePart>
<role>
<roleTerm authority="marcrelator" type="text">author</roleTerm>
</role>
</name>
<originInfo>
<dateIssued>2022</dateIssued>
</originInfo>
<typeOfResource>text</typeOfResource>
<genre authority="bibutilsgt">journal article</genre>
<relatedItem type="host">
<titleInfo>
<title>Environmental Research Communications, Volume 4, Issue 2</title>
</titleInfo>
<originInfo>
<issuance>continuing</issuance>
<publisher>IOP Publishing</publisher>
</originInfo>
<genre authority="marcgt">periodical</genre>
<genre authority="bibutilsgt">academic journal</genre>
</relatedItem>
<abstract>Abstract Climate change is a threat to the 500 Gt carbon stored in northern peatlands. As the region warms, the rise in mean temperature is more pronounced during the non-growing season (NGS, i.e., winter and parts of the shoulder seasons) when net ecosystem loss of carbon dioxide (CO 2 ) occurs. Many studies have investigated the impacts of climate warming on NGS CO 2 emissions, yet there is a lack of consistency amongst researchers in how the NGS period is defined. This complicates the interpretation of NGS CO 2 emissions and hinders our understanding of seasonal drivers of important terrestrial carbon exchange processes. Here, we analyze the impact of alternative definitions of the NGS for a peatland site with multiple years of CO 2 flux records. Three climatic parameters were considered to define the NGS: air temperature, soil temperature, and snow cover. Our findings reveal positive correlations between estimates of the cumulative non-growing season net ecosystem CO 2 exchange (NGS-NEE) and the length of the NGS for each alternative definition, with the greatest proportion of variability explained using snow cover ( R 2 = 0.89, p \textless 0.001), followed by air temperature ( R 2 = 0.79, p \textless 0.001) and soil temperature ( R 2 = 0.54, p = 0.006). Using these correlations, we estimate average daily NGS CO 2 emitted between 1.42 and 1.90 gCO 2 m −2 , depending on which NGS definition is used. Our results highlight the need to explicitly define the NGS based on available climatic parameters to account for regional climate and ecosystem variability.</abstract>
<identifier type="citekey">Rafat-2022-The</identifier>
<identifier type="doi">10.1088/2515-7620/ac53c2</identifier>
<location>
<url>https://gwf-uwaterloo.github.io/gwf-publications/G22-9001</url>
</location>
<part>
<date>2022</date>
<detail type="volume"><number>4</number></detail>
<detail type="issue"><number>2</number></detail>
<detail type="page"><number>021003</number></detail>
</part>
</mods>
</modsCollection>
%0 Journal Article
%T The definition of the non-growing season matters: a case study of net ecosystem carbon exchange from a Canadian peatland
%A Rafat, Arash
%A Byun, Eunji
%A Rezanezhad, Fereidoun
%A Quinton, William L.
%A Humphreys, Elyn
%A Webster, Kara
%A Cappellen, Philippe Van
%J Environmental Research Communications, Volume 4, Issue 2
%D 2022
%V 4
%N 2
%I IOP Publishing
%F Rafat-2022-The
%X Abstract Climate change is a threat to the 500 Gt carbon stored in northern peatlands. As the region warms, the rise in mean temperature is more pronounced during the non-growing season (NGS, i.e., winter and parts of the shoulder seasons) when net ecosystem loss of carbon dioxide (CO 2 ) occurs. Many studies have investigated the impacts of climate warming on NGS CO 2 emissions, yet there is a lack of consistency amongst researchers in how the NGS period is defined. This complicates the interpretation of NGS CO 2 emissions and hinders our understanding of seasonal drivers of important terrestrial carbon exchange processes. Here, we analyze the impact of alternative definitions of the NGS for a peatland site with multiple years of CO 2 flux records. Three climatic parameters were considered to define the NGS: air temperature, soil temperature, and snow cover. Our findings reveal positive correlations between estimates of the cumulative non-growing season net ecosystem CO 2 exchange (NGS-NEE) and the length of the NGS for each alternative definition, with the greatest proportion of variability explained using snow cover ( R 2 = 0.89, p \textless 0.001), followed by air temperature ( R 2 = 0.79, p \textless 0.001) and soil temperature ( R 2 = 0.54, p = 0.006). Using these correlations, we estimate average daily NGS CO 2 emitted between 1.42 and 1.90 gCO 2 m −2 , depending on which NGS definition is used. Our results highlight the need to explicitly define the NGS based on available climatic parameters to account for regional climate and ecosystem variability.
%R 10.1088/2515-7620/ac53c2
%U https://gwf-uwaterloo.github.io/gwf-publications/G22-9001
%U https://doi.org/10.1088/2515-7620/ac53c2
%P 021003
Markdown (Informal)
[The definition of the non-growing season matters: a case study of net ecosystem carbon exchange from a Canadian peatland](https://gwf-uwaterloo.github.io/gwf-publications/G22-9001) (Rafat et al., GWF 2022)
ACL
- Arash Rafat, Eunji Byun, Fereidoun Rezanezhad, William L. Quinton, Elyn Humphreys, Kara Webster, and Philippe Van Cappellen. 2022. The definition of the non-growing season matters: a case study of net ecosystem carbon exchange from a Canadian peatland. Environmental Research Communications, Volume 4, Issue 2, 4(2):021003.
