Extended Cave Drip Water Time Series Captures the 2015–2016 El Niño in Northern Borneo
Time series of cave drip water oxygen isotopes (δ18O) provide site‐specific assessments of the contributions of climate and karst processes to stalagmite δ18O records employed for hydroclimate reconstructions. We present ~12‐year‐long time series of biweekly cave drip water δ18O variations from thre...
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| Veröffentlicht in: | Geophysical research letters 2020-03, Vol.47 (5), p.no-no |
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| creator | Ellis, Shelby A. Cobb, Kim M. Moerman, Jessica W. Partin, Judson W. Bennett, A. Landry Malang, Jenny Gerstner, Hein Tuen, Andrew A. |
| description | Time series of cave drip water oxygen isotopes (δ18O) provide site‐specific assessments of the contributions of climate and karst processes to stalagmite δ18O records employed for hydroclimate reconstructions. We present ~12‐year‐long time series of biweekly cave drip water δ18O variations from three sites as well as a daily resolved local rainfall δ18O record from Gunung Mulu National Park in northern Borneo. Drip water δ18O variations closely match rainfall δ18O variations averaged over the preceding 3–18 months. We observe coherent interannual drip water δ18O variability of ~3‰ to 5‰ related to the El Niño–Southern Oscillation (ENSO), with sustained positive rainfall and drip water δ18O anomalies observed during the 2015/2016 El Niño. Evidence of nonlinear behavior at one of three drip water monitoring sites implies a time‐varying contribution from a longer‐term reservoir. Our results suggest that well‐replicated, high‐resolution stalagmite δ18O reconstructions from Mulu could characterize past ENSO‐related variability in regional hydroclimate.
Plain Language Summary
Cave stalagmites allow for the reconstruction of past regional rainfall variability over the last hundreds of thousands of years with robust age control. Such reconstructions rely on the fact that differences in the isotopic composition of rainwater set by regional rainfall patterns is preserved as the rainwater travels through cave bedrock to feed the cave drip waters forming stalagmites. Long‐term monitoring of rainwater and cave drip water isotopes ground truth the climate to stalagmite relationship across modern‐day changes in regional rainfall. Twelve years of monitoring data presented in this study identify individual El Niño–Southern Oscillation events in rainfall and cave drip water isotopic composition, providing a strong foundation for stalagmite‐based climate reconstructions from this site.
Key Points
Three 12‐year‐long cave drip water δ18O time series capture El Niño and La Niña events in northern Borneo
Estimates of karst residence times range from 3 to 18 months, with a secondary contribution from a longer‐term reservoir at one drip site
Drip water nonstationarity implies multiple stalagmites are required to reconstruct El Niño–Southern Oscillation variability over time |
| doi_str_mv | 10.1029/2019GL086363 |
| format | Article |
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Plain Language Summary
Cave stalagmites allow for the reconstruction of past regional rainfall variability over the last hundreds of thousands of years with robust age control. Such reconstructions rely on the fact that differences in the isotopic composition of rainwater set by regional rainfall patterns is preserved as the rainwater travels through cave bedrock to feed the cave drip waters forming stalagmites. Long‐term monitoring of rainwater and cave drip water isotopes ground truth the climate to stalagmite relationship across modern‐day changes in regional rainfall. Twelve years of monitoring data presented in this study identify individual El Niño–Southern Oscillation events in rainfall and cave drip water isotopic composition, providing a strong foundation for stalagmite‐based climate reconstructions from this site.
Key Points
Three 12‐year‐long cave drip water δ18O time series capture El Niño and La Niña events in northern Borneo
Estimates of karst residence times range from 3 to 18 months, with a secondary contribution from a longer‐term reservoir at one drip site
Drip water nonstationarity implies multiple stalagmites are required to reconstruct El Niño–Southern Oscillation variability over time</description><identifier>ISSN: 0094-8276</identifier><identifier>EISSN: 1944-8007</identifier><identifier>DOI: 10.1029/2019GL086363</identifier><language>eng</language><publisher>Washington: John Wiley & Sons, Inc</publisher><subject>Anomalies ; Bedrock ; cave drip waters ; Chemical composition ; Climate ; Composition ; El Nino ; El Nino phenomena ; El Nino-Southern Oscillation event ; El Nino-Southern Oscillation event-rainfall relationships ; ENSO ; Ground truth ; Hydroclimate ; Isotope composition ; Isotopes ; Karst ; Monitoring ; National parks ; Oxygen ; Oxygen isotopes ; Rain ; Rain water ; Rainfall ; Rainfall patterns ; Rainfall variability ; Robust control ; Southern Oscillation ; Time series ; tropical karst ; tropical rainfall ; Variability ; Variation ; Water monitoring</subject><ispartof>Geophysical research letters, 2020-03, Vol.47 (5), p.no-no</ispartof><rights>2020. The Authors.</rights><rights>2020. American Geophysical Union. All Rights Reserved.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a3674-dac5bdf632708a58427ad6e0b1fd0e77d7cea3a6de35ba3fa265084fa0b3cfe3</citedby><cites>FETCH-LOGICAL-a3674-dac5bdf632708a58427ad6e0b1fd0e77d7cea3a6de35ba3fa265084fa0b3cfe3</cites><orcidid>0000-0003-1372-4967 ; 0000-0003-0315-5545</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%2F2019GL086363$$EPDF$$P50$$Gwiley$$Hfree_for_read</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1029%2F2019GL086363$$EHTML$$P50$$Gwiley$$Hfree_for_read</linktohtml><link.rule.ids>314,780,784,1417,1433,11514,27924,27925,45574,45575,46409,46468,46833,46892</link.rule.ids></links><search><creatorcontrib>Ellis, Shelby A.</creatorcontrib><creatorcontrib>Cobb, Kim M.</creatorcontrib><creatorcontrib>Moerman, Jessica W.</creatorcontrib><creatorcontrib>Partin, Judson W.</creatorcontrib><creatorcontrib>Bennett, A. Landry</creatorcontrib><creatorcontrib>Malang, Jenny</creatorcontrib><creatorcontrib>Gerstner, Hein</creatorcontrib><creatorcontrib>Tuen, Andrew A.</creatorcontrib><title>Extended Cave Drip Water Time Series Captures the 2015–2016 El Niño in Northern Borneo</title><title>Geophysical research letters</title><description>Time series of cave drip water oxygen isotopes (δ18O) provide site‐specific assessments of the contributions of climate and karst processes to stalagmite δ18O records employed for hydroclimate reconstructions. We present ~12‐year‐long time series of biweekly cave drip water δ18O variations from three sites as well as a daily resolved local rainfall δ18O record from Gunung Mulu National Park in northern Borneo. Drip water δ18O variations closely match rainfall δ18O variations averaged over the preceding 3–18 months. We observe coherent interannual drip water δ18O variability of ~3‰ to 5‰ related to the El Niño–Southern Oscillation (ENSO), with sustained positive rainfall and drip water δ18O anomalies observed during the 2015/2016 El Niño. Evidence of nonlinear behavior at one of three drip water monitoring sites implies a time‐varying contribution from a longer‐term reservoir. Our results suggest that well‐replicated, high‐resolution stalagmite δ18O reconstructions from Mulu could characterize past ENSO‐related variability in regional hydroclimate.
Plain Language Summary
Cave stalagmites allow for the reconstruction of past regional rainfall variability over the last hundreds of thousands of years with robust age control. Such reconstructions rely on the fact that differences in the isotopic composition of rainwater set by regional rainfall patterns is preserved as the rainwater travels through cave bedrock to feed the cave drip waters forming stalagmites. Long‐term monitoring of rainwater and cave drip water isotopes ground truth the climate to stalagmite relationship across modern‐day changes in regional rainfall. Twelve years of monitoring data presented in this study identify individual El Niño–Southern Oscillation events in rainfall and cave drip water isotopic composition, providing a strong foundation for stalagmite‐based climate reconstructions from this site.
Key Points
Three 12‐year‐long cave drip water δ18O time series capture El Niño and La Niña events in northern Borneo
Estimates of karst residence times range from 3 to 18 months, with a secondary contribution from a longer‐term reservoir at one drip site
Drip water nonstationarity implies multiple stalagmites are required to reconstruct El Niño–Southern Oscillation variability over time</description><subject>Anomalies</subject><subject>Bedrock</subject><subject>cave drip waters</subject><subject>Chemical composition</subject><subject>Climate</subject><subject>Composition</subject><subject>El Nino</subject><subject>El Nino phenomena</subject><subject>El Nino-Southern Oscillation event</subject><subject>El Nino-Southern Oscillation event-rainfall relationships</subject><subject>ENSO</subject><subject>Ground truth</subject><subject>Hydroclimate</subject><subject>Isotope composition</subject><subject>Isotopes</subject><subject>Karst</subject><subject>Monitoring</subject><subject>National parks</subject><subject>Oxygen</subject><subject>Oxygen isotopes</subject><subject>Rain</subject><subject>Rain water</subject><subject>Rainfall</subject><subject>Rainfall patterns</subject><subject>Rainfall variability</subject><subject>Robust control</subject><subject>Southern Oscillation</subject><subject>Time series</subject><subject>tropical karst</subject><subject>tropical rainfall</subject><subject>Variability</subject><subject>Variation</subject><subject>Water monitoring</subject><issn>0094-8276</issn><issn>1944-8007</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><sourceid>24P</sourceid><sourceid>WIN</sourceid><recordid>eNp9kE9Kw0AYxQdRsFZ3HmDArdFv_mRmstRaqxAqaEFchUnmC6a0SZykanfewZN4Bm_iSRypC1eu3oP34z14hBwyOGHAk1MOLJmkYJRQYosMWCJlZAD0NhkAJMFzrXbJXtfNAUCAYAPyMH7tsXbo6Mg-I73wVUvvbY-ezqol0jv0FXYha_uVD6Z_RBpW4q-39yCKjhd0Wn1-NLSq6bTxIfY1PW98jc0-2SntosODXx2S2eV4NrqK0pvJ9egsjaxQWkbOFnHuSiW4BmNjI7m2TiHkrHSAWjtdoBVWORRxbkVpuYrByNJCLooSxZAcbWpb3zytsOuzebPydVjMuJRGMiUMBOp4QxW-6TqPZdb6amn9OmOQ_XyX_f0u4HyDv1QLXP_LZpPbVAFXUnwDKxtvXg</recordid><startdate>20200316</startdate><enddate>20200316</enddate><creator>Ellis, Shelby A.</creator><creator>Cobb, Kim M.</creator><creator>Moerman, Jessica W.</creator><creator>Partin, Judson W.</creator><creator>Bennett, A. Landry</creator><creator>Malang, Jenny</creator><creator>Gerstner, Hein</creator><creator>Tuen, Andrew A.</creator><general>John Wiley & Sons, Inc</general><scope>24P</scope><scope>WIN</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7TG</scope><scope>7TN</scope><scope>8FD</scope><scope>F1W</scope><scope>FR3</scope><scope>H8D</scope><scope>H96</scope><scope>KL.</scope><scope>KR7</scope><scope>L.G</scope><scope>L7M</scope><orcidid>https://orcid.org/0000-0003-1372-4967</orcidid><orcidid>https://orcid.org/0000-0003-0315-5545</orcidid></search><sort><creationdate>20200316</creationdate><title>Extended Cave Drip Water Time Series Captures the 2015–2016 El Niño in Northern Borneo</title><author>Ellis, Shelby A. ; Cobb, Kim M. ; Moerman, Jessica W. ; Partin, Judson W. ; Bennett, A. Landry ; Malang, Jenny ; Gerstner, Hein ; Tuen, Andrew A.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a3674-dac5bdf632708a58427ad6e0b1fd0e77d7cea3a6de35ba3fa265084fa0b3cfe3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2020</creationdate><topic>Anomalies</topic><topic>Bedrock</topic><topic>cave drip waters</topic><topic>Chemical composition</topic><topic>Climate</topic><topic>Composition</topic><topic>El Nino</topic><topic>El Nino phenomena</topic><topic>El Nino-Southern Oscillation event</topic><topic>El Nino-Southern Oscillation event-rainfall relationships</topic><topic>ENSO</topic><topic>Ground truth</topic><topic>Hydroclimate</topic><topic>Isotope composition</topic><topic>Isotopes</topic><topic>Karst</topic><topic>Monitoring</topic><topic>National parks</topic><topic>Oxygen</topic><topic>Oxygen isotopes</topic><topic>Rain</topic><topic>Rain water</topic><topic>Rainfall</topic><topic>Rainfall patterns</topic><topic>Rainfall variability</topic><topic>Robust control</topic><topic>Southern Oscillation</topic><topic>Time series</topic><topic>tropical karst</topic><topic>tropical rainfall</topic><topic>Variability</topic><topic>Variation</topic><topic>Water monitoring</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Ellis, Shelby A.</creatorcontrib><creatorcontrib>Cobb, Kim M.</creatorcontrib><creatorcontrib>Moerman, Jessica W.</creatorcontrib><creatorcontrib>Partin, Judson W.</creatorcontrib><creatorcontrib>Bennett, A. Landry</creatorcontrib><creatorcontrib>Malang, Jenny</creatorcontrib><creatorcontrib>Gerstner, Hein</creatorcontrib><creatorcontrib>Tuen, Andrew A.</creatorcontrib><collection>Wiley Online Library (Open Access Collection)</collection><collection>Wiley Online Library (Open Access Collection)</collection><collection>CrossRef</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>Oceanic Abstracts</collection><collection>Technology Research Database</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Engineering Research Database</collection><collection>Aerospace Database</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><collection>Civil Engineering Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Geophysical research letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Ellis, Shelby A.</au><au>Cobb, Kim M.</au><au>Moerman, Jessica W.</au><au>Partin, Judson W.</au><au>Bennett, A. Landry</au><au>Malang, Jenny</au><au>Gerstner, Hein</au><au>Tuen, Andrew A.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Extended Cave Drip Water Time Series Captures the 2015–2016 El Niño in Northern Borneo</atitle><jtitle>Geophysical research letters</jtitle><date>2020-03-16</date><risdate>2020</risdate><volume>47</volume><issue>5</issue><spage>no</spage><epage>no</epage><pages>no-no</pages><issn>0094-8276</issn><eissn>1944-8007</eissn><abstract>Time series of cave drip water oxygen isotopes (δ18O) provide site‐specific assessments of the contributions of climate and karst processes to stalagmite δ18O records employed for hydroclimate reconstructions. We present ~12‐year‐long time series of biweekly cave drip water δ18O variations from three sites as well as a daily resolved local rainfall δ18O record from Gunung Mulu National Park in northern Borneo. Drip water δ18O variations closely match rainfall δ18O variations averaged over the preceding 3–18 months. We observe coherent interannual drip water δ18O variability of ~3‰ to 5‰ related to the El Niño–Southern Oscillation (ENSO), with sustained positive rainfall and drip water δ18O anomalies observed during the 2015/2016 El Niño. Evidence of nonlinear behavior at one of three drip water monitoring sites implies a time‐varying contribution from a longer‐term reservoir. Our results suggest that well‐replicated, high‐resolution stalagmite δ18O reconstructions from Mulu could characterize past ENSO‐related variability in regional hydroclimate.
Plain Language Summary
Cave stalagmites allow for the reconstruction of past regional rainfall variability over the last hundreds of thousands of years with robust age control. Such reconstructions rely on the fact that differences in the isotopic composition of rainwater set by regional rainfall patterns is preserved as the rainwater travels through cave bedrock to feed the cave drip waters forming stalagmites. Long‐term monitoring of rainwater and cave drip water isotopes ground truth the climate to stalagmite relationship across modern‐day changes in regional rainfall. Twelve years of monitoring data presented in this study identify individual El Niño–Southern Oscillation events in rainfall and cave drip water isotopic composition, providing a strong foundation for stalagmite‐based climate reconstructions from this site.
Key Points
Three 12‐year‐long cave drip water δ18O time series capture El Niño and La Niña events in northern Borneo
Estimates of karst residence times range from 3 to 18 months, with a secondary contribution from a longer‐term reservoir at one drip site
Drip water nonstationarity implies multiple stalagmites are required to reconstruct El Niño–Southern Oscillation variability over time</abstract><cop>Washington</cop><pub>John Wiley & Sons, Inc</pub><doi>10.1029/2019GL086363</doi><tpages>9</tpages><orcidid>https://orcid.org/0000-0003-1372-4967</orcidid><orcidid>https://orcid.org/0000-0003-0315-5545</orcidid><oa>free_for_read</oa></addata></record> |
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| source | Wiley Journals; Wiley-Blackwell AGU Digital Library; EZB-FREE-00999 freely available EZB journals; Wiley Online Library (Open Access Collection) |
| subjects | Anomalies Bedrock cave drip waters Chemical composition Climate Composition El Nino El Nino phenomena El Nino-Southern Oscillation event El Nino-Southern Oscillation event-rainfall relationships ENSO Ground truth Hydroclimate Isotope composition Isotopes Karst Monitoring National parks Oxygen Oxygen isotopes Rain Rain water Rainfall Rainfall patterns Rainfall variability Robust control Southern Oscillation Time series tropical karst tropical rainfall Variability Variation Water monitoring |
| title | Extended Cave Drip Water Time Series Captures the 2015–2016 El Niño in Northern Borneo |
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