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Asymmetries in the moisture origin of Antarctic precipitation
Open accessAbstract
The seasonality of moisture sources for precipitation in Antarctica is studied with a Lagrangian moisture source diagnostic. Moisture origin for precipitation in Antarctica has strongly asymmetric properties, which are related to the Antarctic topography, seasonal sea ice coverage, and the land/ocean contrasts in the mid‐latitudes of the southern hemisphere. The highest altitudes of the East Antarctic ice shield, where major ice cores have been drilled, have mean source latitudes of 45–40°S year‐round. This finding contrasts to results from previous Lagrangian studies which detected a more southerly moisture origin due to too short trajectories. Now, results from Lagrangian moisture source diagnostics are consistent with findings from general circulation models with tagged tracers. Thus, both approaches can serve as a common benchmark for the interpretation of moisture source indicators based on stable isotopes, such as deuterium excess, in Antarctic ice cores.
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Snowfall in high southern latitudes
Bromwich, D. H. (1988) · Reviews of Geophysics · doi:10.1029/rg026i001p00149 · Cited by 437
Cited by
Bromwich, D. H., Nicolas, J. P., & Monaghan, A. J. (2011) · Journal of Climate · doi:10.1175/2011jcli4074.1 · Cited by 296
Observing and Modeling Ice Sheet Surface Mass Balance
Lenaerts, J. T. M., Medley, B., van den Broeke, M. R., & Wouters, B. (2019) · Reviews of Geophysics · doi:10.1029/2018rg000622 · Cited by 265
Metadata
- Authors
- Sodemann, H., & Stohl, A.
- Venue
- Geophysical Research Letters
- Publisher
- American Geophysical Union (AGU)
- Published
- 2009-11
- Volume
- 36
- Issue
- 22
- ISSN
- 0094-8276 (ISSN-L)
- 1944-8007
- OpenAlex
- W2068521033
- Cited by
- 199
- References
- 1
- FWCI
- 5.15
- Type
- journal article
- Language
- en
- Open access
- bronze
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- Sodemann, H., & Stohl, A. (2009). Asymmetries in the moisture origin of Antarctic precipitation. Geophysical Research Letters. https://doi.org/10.1029/2009gl040242
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