Isotope meteorology of cold front passages: A case study combining observations and modeling
(2015) In Geophysical Research Letters 42(13). p.5652-5660- Abstract
- This study investigates the role of below-cloud evaporation and evapotranspiration for the short-term variability of stable isotopes in near-surface water vapor and precipitation associated with central European cold fronts. To this end, a combination of observations with high temporal resolution and numerical sensitivity experiments with the isotope-enabled regional weather prediction model COSMOiso is used. The representation of the interaction between rain droplets and ambient vapor below the cloud is fundamental for adequately simulating precipitation isotopes ((p)) and total rainfall amount. Neglecting these effects leads to depletion biases of 20-40 in delta H-2(p) and 5-10% in delta O-18(p) and to an increase of 74% in rainfall... (More)
- This study investigates the role of below-cloud evaporation and evapotranspiration for the short-term variability of stable isotopes in near-surface water vapor and precipitation associated with central European cold fronts. To this end, a combination of observations with high temporal resolution and numerical sensitivity experiments with the isotope-enabled regional weather prediction model COSMOiso is used. The representation of the interaction between rain droplets and ambient vapor below the cloud is fundamental for adequately simulating precipitation isotopes ((p)) and total rainfall amount. Neglecting these effects leads to depletion biases of 20-40 in delta H-2(p) and 5-10% in delta O-18(p) and to an increase of 74% in rainfall amount. Isotope fractionation during soil evaporation is of primary importance for correctly simulating the variability of continental low-level vapor delta H-2(v) and delta O-18(v) and particularly of the secondary isotope parameter deuterium excess (d(v)). (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/7773461
- author
- Scholder-Aemisegger, Franziska LU ; Spiegel, J. K. ; Pfahl, S. ; Sodemann, H. ; Eugster, W. and Wernli, H.
- organization
- publishing date
- 2015
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- stable water isotopes, below-cloud evaporation, evapotranspiration, precipitation, cold front
- in
- Geophysical Research Letters
- volume
- 42
- issue
- 13
- pages
- 5652 - 5660
- publisher
- American Geophysical Union (AGU)
- external identifiers
-
- wos:000358691300071
- scopus:84938203185
- ISSN
- 1944-8007
- DOI
- 10.1002/2015GL063988
- language
- English
- LU publication?
- yes
- id
- 5374f73d-745e-4639-b00d-65c4320ba87a (old id 7773461)
- date added to LUP
- 2016-04-01 13:49:07
- date last changed
- 2022-01-27 21:16:07
@article{5374f73d-745e-4639-b00d-65c4320ba87a,
abstract = {{This study investigates the role of below-cloud evaporation and evapotranspiration for the short-term variability of stable isotopes in near-surface water vapor and precipitation associated with central European cold fronts. To this end, a combination of observations with high temporal resolution and numerical sensitivity experiments with the isotope-enabled regional weather prediction model COSMOiso is used. The representation of the interaction between rain droplets and ambient vapor below the cloud is fundamental for adequately simulating precipitation isotopes ((p)) and total rainfall amount. Neglecting these effects leads to depletion biases of 20-40 in delta H-2(p) and 5-10% in delta O-18(p) and to an increase of 74% in rainfall amount. Isotope fractionation during soil evaporation is of primary importance for correctly simulating the variability of continental low-level vapor delta H-2(v) and delta O-18(v) and particularly of the secondary isotope parameter deuterium excess (d(v)).}},
author = {{Scholder-Aemisegger, Franziska and Spiegel, J. K. and Pfahl, S. and Sodemann, H. and Eugster, W. and Wernli, H.}},
issn = {{1944-8007}},
keywords = {{stable water isotopes; below-cloud evaporation; evapotranspiration; precipitation; cold front}},
language = {{eng}},
number = {{13}},
pages = {{5652--5660}},
publisher = {{American Geophysical Union (AGU)}},
series = {{Geophysical Research Letters}},
title = {{Isotope meteorology of cold front passages: A case study combining observations and modeling}},
url = {{http://dx.doi.org/10.1002/2015GL063988}},
doi = {{10.1002/2015GL063988}},
volume = {{42}},
year = {{2015}},
}