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https://doi.org/10.5194/esd-2017-122
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 4.0 License.
Research article
20 Dec 2017
Review status
This discussion paper is a preprint. It is a manuscript under review for the journal Earth System Dynamics (ESD).
The perfect pattern of moisture transport for precipitation for Arctic sea ice melting
Luis Gimeno-Sotelo1, Raquel Nieto2, Marta Vázquez2, and Luis Gimeno2 1Facultade de Matemáticas, Universidade de Santiago de Compostela, 15782 Spain
2Environmental Physics Laboratory (EphysLab), Universidade de Vigo, Ourense, 32004, Spain
Abstract. We have identified the patterns of moisture transport for precipitation over the Arctic region, the Arctic Ocean, and its 13 main subdomains, which better fit with sea ice decline. For this purpose, we studied the different patterns of moisture transport for the case of high/low Arctic sea ice (ASI) extension linked to periods before/after the main change point (CP) in the extension of sea ice. The pattern consists of a general decrease in moisture transport in summer and enhanced moisture transport in autumn and early winter, with different contributions depending on the moisture source and ocean subregion. The pattern is not only statistically significant but also consistent with Eulerian fluxes diagnosis, changes in the frequency of circulation types, and known mechanisms of the effects of snowfall or rainfall on ice in the Arctic. The results of this paper also reveal that the assumed and partially documented enhanced poleward moisture transport from lower latitudes as a consequence of increased moisture from climate change seems to be less simple and constant than typically recognized in relation to enhanced Arctic precipitation throughout the year in the present climate.

Citation: Gimeno-Sotelo, L., Nieto, R., Vázquez, M., and Gimeno, L.: The perfect pattern of moisture transport for precipitation for Arctic sea ice melting, Earth Syst. Dynam. Discuss., https://doi.org/10.5194/esd-2017-122, in review, 2017.
Luis Gimeno-Sotelo et al.
Luis Gimeno-Sotelo et al.
Luis Gimeno-Sotelo et al.

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Short summary
We identified the patterns of moisture transport for precipitation over the Arctic region, the Arctic Ocean, and its 13 main subdomains, which better fit with sea ice decline. The pattern consists of a general decrease in moisture transport in summer and enhanced moisture transport in autumn and early winter, with different contributions depending on the moisture source and ocean subregion.
We identified the patterns of moisture transport for precipitation over the Arctic region, the...
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