Arctic and sub-Arctic lake water δ2H and δ18O along a coastal-inland transect: Implications for interpreting water isotope proxy records
High-latitude lakes are sensitive to climate change and store information about large-scale circulation changes and catchment-integrated processes. Lakes are mainly recharged by meteoric water, meaning that some lake sediment proxies may indirectly archive the stable isotopic composition of hydrogen...
Published in: | Journal of Hydrology |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Elsevier
2022
|
Subjects: | |
Online Access: | https://hdl.handle.net/10037/24643 https://doi.org/10.1016/j.jhydrol.2022.127556 |
id |
ftunivtroemsoe:oai:munin.uit.no:10037/24643 |
---|---|
record_format |
openpolar |
spelling |
ftunivtroemsoe:oai:munin.uit.no:10037/24643 2023-05-15T14:23:44+02:00 Arctic and sub-Arctic lake water δ2H and δ18O along a coastal-inland transect: Implications for interpreting water isotope proxy records Kjellman, Sofia Elisabeth Thomas, Elizabeth K. Schomacker, Anders 2022-02-04 https://hdl.handle.net/10037/24643 https://doi.org/10.1016/j.jhydrol.2022.127556 eng eng Elsevier Kjellman, S.E. (2022). Holocene precipitation seasonality on Svalbard and in Northern Fennoscandia reconstructed using organic geochemical and stable isotope proxies. (Doctoral thesis). https://hdl.handle.net/10037/26641 Journal of Hydrology Kjellman SE, Thomas EK, Schomacker A. Arctic and sub-Arctic lake water δ2H and δ18O along a coastal-inland transect: Implications for interpreting water isotope proxy records. Journal of Hydrology. 2022;607 FRIDAID 2000002 doi:10.1016/j.jhydrol.2022.127556 0022-1694 1879-2707 https://hdl.handle.net/10037/24643 openAccess Copyright 2022 The Author(s) Journal article Tidsskriftartikkel Peer reviewed publishedVersion 2022 ftunivtroemsoe https://doi.org/10.1016/j.jhydrol.2022.127556 2022-09-07T23:00:13Z High-latitude lakes are sensitive to climate change and store information about large-scale circulation changes and catchment-integrated processes. Lakes are mainly recharged by meteoric water, meaning that some lake sediment proxies may indirectly archive the stable isotopic composition of hydrogen (δ 2 H) and oxygen (δ 18 O) of past precipitation. Yet, despite similar precipitation input, lakes within a region may exhibit a wide range of isotopic values due to the varying influence of inflow seasonality and evaporation. Moreover, the relative sensitivity of each lake to these controls may vary through time, something that is difficult to account for. Here, we evaluate the impact of variable inflow δ 2 H and evaporation on the lake water isotopic composition across northern Fennoscandia (Norway, Finland, and Sweden). We measured lake water δ 2 H and δ 18 O of 135 lakes spanning from the north Norwegian coast along a 460 km transect to the Bothnian Bay, sampled from 2018 to 2020. Our data show that both coastal and inland lakes are sensitive to distillation during moisture transport, and that lakes farther from the Atlantic Ocean are additionally impacted by evaporation. We estimated the isotopic composition of lake water inflow values for evapo-concentrated transect lakes (δ 2 H I ) using a Bayesian method. Resampled transect lakes had more depleted δ H I in 2020 than in 2019, indicating either that precipitation was 2 H-depleted or that more winter precipitation contributed inflow to the lakes in 2020 compared to in 2019. We suggest that the more 2 H-depleted values in 2020 were a response to a snow-rich winter, associated with extremely positive Arctic Oscillation (AO+) conditions and increased moisture supply from the North Atlantic. We find evidence that lake water isotopic variability in this region reflects a combination of seasonal precipitation changes associated with atmospheric circulation changes, and catchment-integrated evaporation. Careful consideration of the variable sensitivity to these ... Article in Journal/Newspaper Arctic Arctic Climate change Fennoscandia North Atlantic University of Tromsø: Munin Open Research Archive Arctic Arctic Lake ENVELOPE(-130.826,-130.826,57.231,57.231) Norway Journal of Hydrology 607 127556 |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
description |
High-latitude lakes are sensitive to climate change and store information about large-scale circulation changes and catchment-integrated processes. Lakes are mainly recharged by meteoric water, meaning that some lake sediment proxies may indirectly archive the stable isotopic composition of hydrogen (δ 2 H) and oxygen (δ 18 O) of past precipitation. Yet, despite similar precipitation input, lakes within a region may exhibit a wide range of isotopic values due to the varying influence of inflow seasonality and evaporation. Moreover, the relative sensitivity of each lake to these controls may vary through time, something that is difficult to account for. Here, we evaluate the impact of variable inflow δ 2 H and evaporation on the lake water isotopic composition across northern Fennoscandia (Norway, Finland, and Sweden). We measured lake water δ 2 H and δ 18 O of 135 lakes spanning from the north Norwegian coast along a 460 km transect to the Bothnian Bay, sampled from 2018 to 2020. Our data show that both coastal and inland lakes are sensitive to distillation during moisture transport, and that lakes farther from the Atlantic Ocean are additionally impacted by evaporation. We estimated the isotopic composition of lake water inflow values for evapo-concentrated transect lakes (δ 2 H I ) using a Bayesian method. Resampled transect lakes had more depleted δ H I in 2020 than in 2019, indicating either that precipitation was 2 H-depleted or that more winter precipitation contributed inflow to the lakes in 2020 compared to in 2019. We suggest that the more 2 H-depleted values in 2020 were a response to a snow-rich winter, associated with extremely positive Arctic Oscillation (AO+) conditions and increased moisture supply from the North Atlantic. We find evidence that lake water isotopic variability in this region reflects a combination of seasonal precipitation changes associated with atmospheric circulation changes, and catchment-integrated evaporation. Careful consideration of the variable sensitivity to these ... |
format |
Article in Journal/Newspaper |
author |
Kjellman, Sofia Elisabeth Thomas, Elizabeth K. Schomacker, Anders |
spellingShingle |
Kjellman, Sofia Elisabeth Thomas, Elizabeth K. Schomacker, Anders Arctic and sub-Arctic lake water δ2H and δ18O along a coastal-inland transect: Implications for interpreting water isotope proxy records |
author_facet |
Kjellman, Sofia Elisabeth Thomas, Elizabeth K. Schomacker, Anders |
author_sort |
Kjellman, Sofia Elisabeth |
title |
Arctic and sub-Arctic lake water δ2H and δ18O along a coastal-inland transect: Implications for interpreting water isotope proxy records |
title_short |
Arctic and sub-Arctic lake water δ2H and δ18O along a coastal-inland transect: Implications for interpreting water isotope proxy records |
title_full |
Arctic and sub-Arctic lake water δ2H and δ18O along a coastal-inland transect: Implications for interpreting water isotope proxy records |
title_fullStr |
Arctic and sub-Arctic lake water δ2H and δ18O along a coastal-inland transect: Implications for interpreting water isotope proxy records |
title_full_unstemmed |
Arctic and sub-Arctic lake water δ2H and δ18O along a coastal-inland transect: Implications for interpreting water isotope proxy records |
title_sort |
arctic and sub-arctic lake water δ2h and δ18o along a coastal-inland transect: implications for interpreting water isotope proxy records |
publisher |
Elsevier |
publishDate |
2022 |
url |
https://hdl.handle.net/10037/24643 https://doi.org/10.1016/j.jhydrol.2022.127556 |
long_lat |
ENVELOPE(-130.826,-130.826,57.231,57.231) |
geographic |
Arctic Arctic Lake Norway |
geographic_facet |
Arctic Arctic Lake Norway |
genre |
Arctic Arctic Climate change Fennoscandia North Atlantic |
genre_facet |
Arctic Arctic Climate change Fennoscandia North Atlantic |
op_relation |
Kjellman, S.E. (2022). Holocene precipitation seasonality on Svalbard and in Northern Fennoscandia reconstructed using organic geochemical and stable isotope proxies. (Doctoral thesis). https://hdl.handle.net/10037/26641 Journal of Hydrology Kjellman SE, Thomas EK, Schomacker A. Arctic and sub-Arctic lake water δ2H and δ18O along a coastal-inland transect: Implications for interpreting water isotope proxy records. Journal of Hydrology. 2022;607 FRIDAID 2000002 doi:10.1016/j.jhydrol.2022.127556 0022-1694 1879-2707 https://hdl.handle.net/10037/24643 |
op_rights |
openAccess Copyright 2022 The Author(s) |
op_doi |
https://doi.org/10.1016/j.jhydrol.2022.127556 |
container_title |
Journal of Hydrology |
container_volume |
607 |
container_start_page |
127556 |
_version_ |
1766296216809766912 |