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Global Estimates of Inorganic Nitrogen Deposition Across Four Decades
Atmospheric deposition of inorganic nitrogen is critical to the function of ecosystems and elemental cycles. During the industrial period, humans have doubled the amount of inorganic nitrogen in the biosphere and radically altered rates of atmospheric nitrogen deposition. Despite this rapid change,...
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Published in: | Global biogeochemical cycles 2019-01, Vol.33 (1), p.100-107 |
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description | Atmospheric deposition of inorganic nitrogen is critical to the function of ecosystems and elemental cycles. During the industrial period, humans have doubled the amount of inorganic nitrogen in the biosphere and radically altered rates of atmospheric nitrogen deposition. Despite this rapid change, estimates of global nitrogen deposition patterns generally have low, centennial‐scale temporal resolution. Lack of information on annual‐ to decadal‐scale changes in global nitrogen deposition makes it difficult for scientists researching questions on these finer timescales to contextualize their work within the global nitrogen cycle. Here we use the GEOS‐Chem Chemical Transport Model to estimate wet and dry deposition of inorganic nitrogen globally at a spatial resolution of 2° × 2.5° for 12 individual years in the period from 1984 to 2016. During this time, we found an 8% increase in global inorganic nitrogen deposition from 86.6 to 93.6 TgN/year, a trend that comprised a balance of variable regional patterns. For example, inorganic nitrogen deposition increased in areas including East Asia and Southern Brazil, while inorganic nitrogen deposition declined in areas including Europe. Further, we found a global increase in the percentage of inorganic nitrogen deposited in chemically reduced forms from 30% to 35%, and this trend was largely driven by strong regional increases in the proportion of chemically reduced nitrogen deposited over the United States. This study provides spatially explicit estimates of inorganic nitrogen deposition over the last four decades and improves our understanding of short‐term human impacts on the global nitrogen cycle.
Key Points
We simulated global wet and dry deposition of inorganic nitrogen for 12 individual years in the period from 1984 to 2016
Global inorganic nitrogen deposition increased by 8% during the period simulated, but trends varied regionally
The proportion of inorganic nitrogen deposited in chemically reduced forms also increased during the simulated period |
doi_str_mv | 10.1029/2018GB005990 |
format | article |
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Key Points
We simulated global wet and dry deposition of inorganic nitrogen for 12 individual years in the period from 1984 to 2016
Global inorganic nitrogen deposition increased by 8% during the period simulated, but trends varied regionally
The proportion of inorganic nitrogen deposited in chemically reduced forms also increased during the simulated period</description><identifier>ISSN: 0886-6236</identifier><identifier>EISSN: 1944-9224</identifier><identifier>DOI: 10.1029/2018GB005990</identifier><language>eng</language><publisher>Washington: Blackwell Publishing Ltd</publisher><subject>atmospheric deposition ; Atmospheric pollution deposition ; Biosphere ; Chemical transport ; chemical transport model ; Deposition ; Dry deposition ; Ecosystems ; Estimates ; Human influences ; Nitrogen ; Nitrogen cycle ; Nitrogen deposition ; Organic chemistry ; Resolution ; Spatial resolution ; Temporal resolution ; Wet and dry deposition</subject><ispartof>Global biogeochemical cycles, 2019-01, Vol.33 (1), p.100-107</ispartof><rights>2018. American Geophysical Union. All Rights Reserved.</rights><rights>2019. American Geophysical Union. All Rights Reserved.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a4764-52f2f05eba6c522d066059cd10aadc14aabdeb8ffa460d3c5b821d3f255135313</citedby><cites>FETCH-LOGICAL-a4764-52f2f05eba6c522d066059cd10aadc14aabdeb8ffa460d3c5b821d3f255135313</cites><orcidid>0000-0002-9305-4184 ; 0000-0003-3076-125X</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1029%2F2018GB005990$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1029%2F2018GB005990$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,780,784,11514,27924,27925,46468,46892</link.rule.ids></links><search><creatorcontrib>Ackerman, Daniel</creatorcontrib><creatorcontrib>Millet, Dylan B.</creatorcontrib><creatorcontrib>Chen, Xin</creatorcontrib><title>Global Estimates of Inorganic Nitrogen Deposition Across Four Decades</title><title>Global biogeochemical cycles</title><description>Atmospheric deposition of inorganic nitrogen is critical to the function of ecosystems and elemental cycles. During the industrial period, humans have doubled the amount of inorganic nitrogen in the biosphere and radically altered rates of atmospheric nitrogen deposition. Despite this rapid change, estimates of global nitrogen deposition patterns generally have low, centennial‐scale temporal resolution. Lack of information on annual‐ to decadal‐scale changes in global nitrogen deposition makes it difficult for scientists researching questions on these finer timescales to contextualize their work within the global nitrogen cycle. Here we use the GEOS‐Chem Chemical Transport Model to estimate wet and dry deposition of inorganic nitrogen globally at a spatial resolution of 2° × 2.5° for 12 individual years in the period from 1984 to 2016. During this time, we found an 8% increase in global inorganic nitrogen deposition from 86.6 to 93.6 TgN/year, a trend that comprised a balance of variable regional patterns. For example, inorganic nitrogen deposition increased in areas including East Asia and Southern Brazil, while inorganic nitrogen deposition declined in areas including Europe. Further, we found a global increase in the percentage of inorganic nitrogen deposited in chemically reduced forms from 30% to 35%, and this trend was largely driven by strong regional increases in the proportion of chemically reduced nitrogen deposited over the United States. This study provides spatially explicit estimates of inorganic nitrogen deposition over the last four decades and improves our understanding of short‐term human impacts on the global nitrogen cycle.
Key Points
We simulated global wet and dry deposition of inorganic nitrogen for 12 individual years in the period from 1984 to 2016
Global inorganic nitrogen deposition increased by 8% during the period simulated, but trends varied regionally
The proportion of inorganic nitrogen deposited in chemically reduced forms also increased during the simulated period</description><subject>atmospheric deposition</subject><subject>Atmospheric pollution deposition</subject><subject>Biosphere</subject><subject>Chemical transport</subject><subject>chemical transport model</subject><subject>Deposition</subject><subject>Dry deposition</subject><subject>Ecosystems</subject><subject>Estimates</subject><subject>Human influences</subject><subject>Nitrogen</subject><subject>Nitrogen cycle</subject><subject>Nitrogen deposition</subject><subject>Organic chemistry</subject><subject>Resolution</subject><subject>Spatial resolution</subject><subject>Temporal resolution</subject><subject>Wet and dry deposition</subject><issn>0886-6236</issn><issn>1944-9224</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2019</creationdate><recordtype>article</recordtype><recordid>eNp9kE1Lw0AQhhdRsFZv_oAFr0ZnZz-aHNvaxkLRi57DZj9KSszW3RTpv2-0Hjx5Ghge3nnmJeSWwQMDLB4RWF7OAGRRwBkZsUKIrEAU52QEea4yhVxdkquUtgBMSFmMyKJsQ61bukh986F7l2jwdNWFuNFdY-hL08ewcR19cruQmr4JHZ2aGFKiy7CPw9po69I1ufC6Te7md47J-3LxNn_O1q_laj5dZ1pMlMgkevQgXa2VkYgWlBpcjWWgtTVMaF1bV-fea6HAciPrHJnlHqVkXHLGx-TulLuL4XPvUl9tB4tuOFkhm-QgJjhwY3J_on5Eo_PVLg7PxUPFoPouqvpb1IDjCf9qWnf4l63K2RwhR8GPKZ9oOQ</recordid><startdate>201901</startdate><enddate>201901</enddate><creator>Ackerman, Daniel</creator><creator>Millet, Dylan B.</creator><creator>Chen, Xin</creator><general>Blackwell Publishing Ltd</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SN</scope><scope>7TG</scope><scope>C1K</scope><scope>F1W</scope><scope>H96</scope><scope>KL.</scope><scope>L.G</scope><orcidid>https://orcid.org/0000-0002-9305-4184</orcidid><orcidid>https://orcid.org/0000-0003-3076-125X</orcidid></search><sort><creationdate>201901</creationdate><title>Global Estimates of Inorganic Nitrogen Deposition Across Four Decades</title><author>Ackerman, Daniel ; Millet, Dylan B. ; Chen, Xin</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a4764-52f2f05eba6c522d066059cd10aadc14aabdeb8ffa460d3c5b821d3f255135313</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2019</creationdate><topic>atmospheric deposition</topic><topic>Atmospheric pollution deposition</topic><topic>Biosphere</topic><topic>Chemical transport</topic><topic>chemical transport model</topic><topic>Deposition</topic><topic>Dry deposition</topic><topic>Ecosystems</topic><topic>Estimates</topic><topic>Human influences</topic><topic>Nitrogen</topic><topic>Nitrogen cycle</topic><topic>Nitrogen deposition</topic><topic>Organic chemistry</topic><topic>Resolution</topic><topic>Spatial resolution</topic><topic>Temporal resolution</topic><topic>Wet and dry deposition</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Ackerman, Daniel</creatorcontrib><creatorcontrib>Millet, Dylan B.</creatorcontrib><creatorcontrib>Chen, Xin</creatorcontrib><collection>CrossRef</collection><collection>Ecology Abstracts</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><jtitle>Global biogeochemical cycles</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Ackerman, Daniel</au><au>Millet, Dylan B.</au><au>Chen, Xin</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Global Estimates of Inorganic Nitrogen Deposition Across Four Decades</atitle><jtitle>Global biogeochemical cycles</jtitle><date>2019-01</date><risdate>2019</risdate><volume>33</volume><issue>1</issue><spage>100</spage><epage>107</epage><pages>100-107</pages><issn>0886-6236</issn><eissn>1944-9224</eissn><abstract>Atmospheric deposition of inorganic nitrogen is critical to the function of ecosystems and elemental cycles. During the industrial period, humans have doubled the amount of inorganic nitrogen in the biosphere and radically altered rates of atmospheric nitrogen deposition. Despite this rapid change, estimates of global nitrogen deposition patterns generally have low, centennial‐scale temporal resolution. Lack of information on annual‐ to decadal‐scale changes in global nitrogen deposition makes it difficult for scientists researching questions on these finer timescales to contextualize their work within the global nitrogen cycle. Here we use the GEOS‐Chem Chemical Transport Model to estimate wet and dry deposition of inorganic nitrogen globally at a spatial resolution of 2° × 2.5° for 12 individual years in the period from 1984 to 2016. During this time, we found an 8% increase in global inorganic nitrogen deposition from 86.6 to 93.6 TgN/year, a trend that comprised a balance of variable regional patterns. For example, inorganic nitrogen deposition increased in areas including East Asia and Southern Brazil, while inorganic nitrogen deposition declined in areas including Europe. Further, we found a global increase in the percentage of inorganic nitrogen deposited in chemically reduced forms from 30% to 35%, and this trend was largely driven by strong regional increases in the proportion of chemically reduced nitrogen deposited over the United States. This study provides spatially explicit estimates of inorganic nitrogen deposition over the last four decades and improves our understanding of short‐term human impacts on the global nitrogen cycle.
Key Points
We simulated global wet and dry deposition of inorganic nitrogen for 12 individual years in the period from 1984 to 2016
Global inorganic nitrogen deposition increased by 8% during the period simulated, but trends varied regionally
The proportion of inorganic nitrogen deposited in chemically reduced forms also increased during the simulated period</abstract><cop>Washington</cop><pub>Blackwell Publishing Ltd</pub><doi>10.1029/2018GB005990</doi><tpages>8</tpages><orcidid>https://orcid.org/0000-0002-9305-4184</orcidid><orcidid>https://orcid.org/0000-0003-3076-125X</orcidid><oa>free_for_read</oa></addata></record> |
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subjects | atmospheric deposition Atmospheric pollution deposition Biosphere Chemical transport chemical transport model Deposition Dry deposition Ecosystems Estimates Human influences Nitrogen Nitrogen cycle Nitrogen deposition Organic chemistry Resolution Spatial resolution Temporal resolution Wet and dry deposition |
title | Global Estimates of Inorganic Nitrogen Deposition Across Four Decades |
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