Possible changes of δ 18O in precipitation caused by a meltwater event in the 
North Atlantic

Werner, M.; Mikolajewicz, U.; Hoffmann, G.; Heimann, Martin

doi:10.1029/1999JD901196

アイテム詳細

登録内容を編集ファイル形式で保存

一時保存へ追加

タグ情報を表示リリース履歴を表示詳細要約

公開

学術論文

Possible changes of δ ¹⁸O in precipitation caused by a meltwater event in the North Atlantic

MPS-Authors

/persons/resource/persons62402

Heimann, Martin
Department Biogeochemical Systems, Prof. M. Heimann, Max Planck Institute for Biogeochemistry, Max Planck Society;

External Resource

http://dx.doi.org/10.1029/1999JD901196
(出版社版)

Fulltext (restricted access)

There are currently no full texts shared for your IP range.

フルテキスト (公開)

公開されているフルテキストはありません

付随資料 (公開)

There is no public supplementary material available

引用

Werner, M., Mikolajewicz, U., Hoffmann, G., & Heimann, M. (2000). Possible changes of δ ¹⁸O in precipitation caused by a meltwater event in the North Atlantic. Journal of Geophysical Research: Atmospheres, 105(8), 10161-10167. doi:10.1029/1999JD901196.

引用: https://hdl.handle.net/11858/00-001M-0000-000E-CD47-2

要旨

The Hamburg atmosphere general circulation model ECHAM-4 is used to investigate how a meltwater event in the North Atlantic might alter the signal of stable water isotopes (H-2 O-18, HDO) in precipitation. Our results show that such a meltwater event will cause significant changes in the isotopic composition of the precipitation over many parts of the Northern Hemisphere, but also in the tropical Atlantic region. Model simulations suggest that for such a scenario isotope anomalies are not only related to temperature changes, but also to changes in the seasonality of precipitation or the precipitation amount. A changed isotopic composition of evaporating ocean surface waters (caused by a massive meltwater input into the North Atlantic) causes temperature-independent isotope anomalies, too. Changes of the deuterium excess are even more affected by the imposed oceanic isotope anomaly due to the nonlinearity of the evaporation process. [References: 28]