Stable isotopes in precipitation and meteoric waters ... · Stable isotopes in precipitation and...
Transcript of Stable isotopes in precipitation and meteoric waters ... · Stable isotopes in precipitation and...
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Stable isotopes in precipitation and meteoric waters: Investigating the North American monsoon across the Four Corners region
Crystal L. Tulley-Cordova1,3, Gabriel J. Bowen1, Courtenay Strong2, Irving Brady3, Jerome Bekis3, Raquel Whitehorse4,
Annie Putman1, Donovan Quintero5
1University of Utah Department of Geology & Geophysics, 2University of Utah Department of Atmospheric Sciences, 3Navajo Nation Department of Water Resources, 4Navajo Tribal Utility
Authority, 5Navajo Times
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Shí éí Crystal Tulley-Cordova yinishyé.
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Tó éí iiná áté
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NEWS
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Navajo Nation• Navajo reservation was established in 1868• Over 71,000 km2
• Largest land-based tribe in the U.S. • Primary water source is ground water
ArizonaColoradoNew Mexico
Utah
Hopi
NavajoNation
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Entities involved with Navajo Water
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Changes in precipitation
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Church Rock, NMJuly 15, 2018
Photo credit: Earl Tulley
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Leupp, AZ
Photo credit: Donovan QuinteroPhoto credit: Donovan Quintero
June 2018
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Lake, stream, spring, and ground water recharge
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Photo credit: Donovan Quintero
Kayenta, AZ
Frequency of dust migration and strength of winds
Photo credit: Donovan Quintero
Chilchinbeto, AZ
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Flow in ephemeral and perennial streams
June 2017 July 2017
Red Valley Wash near Navajo, NM
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Aquatic species populationsJune 2013
Whiskey CreekApril 2018
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Deer populations
Photo credit: Sam Diswood
Navajo Fish & Wildlife 2018
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Chilchinbeto, AZ
Photo credit: Donovan QuinteroWallace et al. 2017
Wild Horse populations
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Bark Beetles
US Forest Service
Photo credit: Donovan Quintero
Narbona Pass
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Wildfires
Sawmill, AZJune 3, 2018
Photo credit: Donovan Quintero
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19Photo credit: Neil Damon
Mushroom Peak fireSeptember 2018
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change in vegetative cover and possible
alterations in species composition
2014
2015Dennehotso, AZ
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U.S. Drought Monitor
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droughtmonitor.unl.edu
November 27, 2018 March 5, 2019
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Navajo Nation, USA, precipitation variability from 2002 to 2015
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Previous studies• individual location sites and data collection
dates vary• few sites have remained operational, but
others have not due to funding
Crimmins et al., 201323
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Hydrometeorological network
Tulley-Cordova et al. 2018, JCWRE24
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Precipitation Collectors
A) Bodaway, AZ, B) Dennehotso, AZ, C) Shiprock, NM, D) Todacheene Lake, NM, E) Bluff, UT
A) B)
C) D) E)
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NN data collection
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Research questions
• Are there different hydroclimatic regions on the Navajo Nation?
• Is there a bimodal precipitation regime?• What are the seasonal precipitation patterns?• Are the length and onset of monsoon different
for each region?• What is the major contributor to total annual
precipitation?
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Hydroclimate regions of the Navajo Nation
Tulley-Cordova et al. 2018, JCWRE 28
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Precipitation climatology
Tulley-Cordova et al. 2018, JCWRE
South North West Mtns. East Avg
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Seasonal precipitation
Tulley-Cordova et al. 2018, JCWRE 30
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Year-to-year comparison
Tulley-Cordova et al. 2018, JCWRE31
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Seasonal patterns compared with climate indices
Tulley-Cordova et al. 2018, JCWRE
Winter Summer
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• Climatology on NN varies depending on region• Length and onset of monsoon different for each
region• Summer and winter precipitation contributions to
annual precipitation variable• Extremes in winter and summer independent of
each other• Winter precipitation sensitive to PNA• Summer precipitation responds weakly to major
climate modes
Inter- & intra- annual precipitation conclusions
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Stable isotopes in precipitation and meteoric water: Recording the North American monsoon in Arizona, New
Mexico, and Utah
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Stable isotope ratios of hydrogen and oxygen can be used to distinguish the origin of water in precipitation, surface and ground waters
waterisotopes.org
Why study stable isotopes?
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North American monsoon
Barron et al. 2012
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North American monsoon region
Hu & Dominguez 2015
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Research questions
• What are the spatio-temporal distributions of water isotopes in precipitation and associated waters across the Navajo Nation?
• Are ground waters derived from monsoonal precipitation?
• Will ground water and associated waters be sensitive to future changes in the monsoon?
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Tulley-Cordova, Putman & Bowen 2018, in prep39
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North American monsoon temporal patterns
Tulley-Cordova, Putman & Bowen 2018, in prep40
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Oxygen-18
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Tulley-Cordova, Putman & Bowen 2018, in prep
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Precipitation event sampling2015 to 2017
43Tulley-Cordova, Putman & Bowen 2018, in prep
LMWL δ2H = 6.8 * δ18O – 2.2‰
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Vapor source for North American monsoon precipitation
Tulley-Cordova, Putman & Bowen 2018, in prep
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Seasonal effect on monthly
precipitation
45Tulley-Cordova, Putman & Bowen 2018, in prep
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Altitude effect
46Tulley-Cordova, Putman & Bowen 2018, in prep
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Amount effect
47Tulley-Cordova, Putman & Bowen 2018, in prep
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Tulley-Cordova, Putman & Bowen 2018, in prep
Relationship of Navajo waters to precipitation
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Stable isotopic conclusions
• Evident monthly and inter-annual temporal patterns for precipitation.
• Weak spatial patterns across the Navajo Nation for precipitation.
• Stable isotopic signature of ground water, springs, streams, and lakes are more similar to winter than summer precipitation
• Navajo ground waters are less likely to be sensitive to future monsoonal changes.
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Ahéhee’
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University of UtahGabriel Bowen (Chair)Kip SolomonCourt StrongBrenda BowenAnnie PutmanSagarika BanerjeeSuvankar ChakravortyWil Mace
University of ArizonaKarletta Chief
University of New MexicoLani Tsinnajinnie
Navajo Nation Water Management BranchJason JohnIrving BradyJerome BekisLinda Lee
Navajo Tribal Utility AuthorityRaquel WhitehorseDavid WhiteWinona ShirleyJonathan Shirley
Navajo Environmental Protection AgencyYolanda Barney
Citizen scientistsTulley and Cordova families
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Ahéhee’ nitsaago
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References
• Barron, J.A., Metcalfe, S.E., Addison, J.A. 2012. Response of the North American monsoon to regional changes in ocean surface temperature. Paleoceanography, 27(3), 1-17.
• Crimmins, M.A., Selover, N., Cozzetto, K., and Chief, K. 2013. Technical Review of the Navajo Nation Drought Contingency Plan – Drought Monitoring.
• Hu, H., & Dominguez, F. (2015). Evaluation of Oceanic and Terrestrial sources of moisture for the North American monsoon using Numerical models and precipitation stable isotopes. Journal of Hydrometeorology, 16(1), 19-35.
• Tulley-Cordova, C.L., Strong, C., Brady, I.P., Bekis, J., and Bowen, G.J. 2018. Navajo Nation, USA, precipitation variability from 2002 to 2015. Journal of Contemporary Water Research and Education, 163, 109-123.
• Tulley-Cordova, C.L. and Bowen, G.J. 2018. Stable isotopes in precipitation and associated waters: Recording the North American Monsoon in Arizona, New Mexico, and Utah. Manuscript in prep.
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Questions