Articles | Volume 17, issue 7
Atmos. Chem. Phys., 17, 4627–4639, 2017
Atmos. Chem. Phys., 17, 4627–4639, 2017

Research article 07 Apr 2017

Research article | 07 Apr 2017

Annual variation in event-scale precipitation δ2H at Barrow, AK, reflects vapor source region

Annie L. Putman et al.

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Subject: Isotopes | Research Activity: Field Measurements | Altitude Range: Troposphere | Science Focus: Physics (physical properties and processes)
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Cited articles

Aemisegger, F., Spiegel, J. K., Pfahl, S., Sodemann, H., Eugster, W., and Wernli, H.: Isotope meteorology of cold front passages: A case study combining observations and modeling, Geophys. Res. Lett., 42, 5652–5660,, 2015.
Bharadwaj, N., Widener, K., Nelson, D., Venkatesh, V., Lindenmaier, I., and Johnson, K.: KAZRGE 4-1-2011 to 4-1-2013, 71.323 N 156.609 W: North Slope Alaska (NSA) Central Facility, Barrow AK (C1), 2011.
Bintanja, R. and Selten, F. M.: Future increases in Arctic precipitation linked to local evaporation and sea-ice retreat, Nature, 509, 479–482,, 2014.
Bonne, J.-L., Masson-Delmotte, V., Cattani, O., Delmotte, M., Risi, C., Sodemann, H., and Steen-Larsen, H. C.: The isotopic composition of water vapour and precipitation in Ivittuut, southern Greenland, Atmos. Chem. Phys., 14, 4419–4439,, 2014.
Bonne, J.-L., Steen-Larsen, H. C., Risi, C., Werner, M., Sodemann, H., Lacour, J.-L., Fettweis, X., Cesana, G., Delmotte, M., Cattani, O., Vallelonga, P., Kjær, H. A., Clerbaux, C., Sveinbjörnsdòttir, R. E., and Masson-Delmotte, V.: The summer 2012 Greenland heat wave: In situ and remote sensing observations of water vapor isotopic composition during an atmospheric river event, J. Geophys. Res.-Atmos., 120, 2970–2989,, 2015.
Short summary
Water vapor source and transport are linked to the stable isotopes of precipitation of 70 storms at Barrow, AK, USA. Barrow's vapor came from the North Pacific in winter and the Arctic Ocean in summer. Half the isotopic variability was explained by the size of the temperature drop from the vapor source to Barrow, the evaporation conditions, and whether the vapor traveled over mountains. Because isotopes reflect the regional meteorology they may be early indicators of Arctic hydroclimatic change.
Final-revised paper