Impact of western Siberia heat wave 2012 on greenhouse gases and trace metal concentration in thaw lakes of discontinuous permafrost zone
During the anomalously hot summer in 2012, surface air temperatures in Western Siberia were 5 to 15 °C higher than those observed during the previous period of > 30 yr. This unusual climate phenomenon provided an opportunity to examine the effects of short-term natural heating of water in thermok...
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ftdoajarticles:oai:doaj.org/article:4570df9a7e264031a5270b3853954751 2023-05-15T17:57:43+02:00 Impact of western Siberia heat wave 2012 on greenhouse gases and trace metal concentration in thaw lakes of discontinuous permafrost zone O. S. Pokrovsky L. S. Shirokova S. N. Kirpotin S. P. Kulizhsky S. N. Vorobiev 2013-08-01T00:00:00Z https://doi.org/10.5194/bg-10-5349-2013 https://doaj.org/article/4570df9a7e264031a5270b3853954751 EN eng Copernicus Publications http://www.biogeosciences.net/10/5349/2013/bg-10-5349-2013.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 doi:10.5194/bg-10-5349-2013 1726-4170 1726-4189 https://doaj.org/article/4570df9a7e264031a5270b3853954751 Biogeosciences, Vol 10, Iss 8, Pp 5349-5365 (2013) Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 article 2013 ftdoajarticles https://doi.org/10.5194/bg-10-5349-2013 2022-12-31T02:48:34Z During the anomalously hot summer in 2012, surface air temperatures in Western Siberia were 5 to 15 °C higher than those observed during the previous period of > 30 yr. This unusual climate phenomenon provided an opportunity to examine the effects of short-term natural heating of water in thermokarst ponds and lakes in discontinuous permafrost zones and compare these observations to previous field results obtained when the temperature was normal during the summer of 2010 in the same region. In 2012, thermokarst bodies of water shrank significantly, water levels dropped approximately 50 cm in large lakes and small (< 10–100 m 2 ) ponds, and shallow soil depressions disappeared. Based on samples from ~ 40 bodies of water collected previously and in 2012, first-order features of changes in chemical composition in response to increased water temperatures (from 14.1 ± 2.2 to 23.8 ± 2.3 °C in 2010 and 2012, respectively) were established. In these thermokarst bodies of water that covered a full range of surface areas, the average conductivity and pH were almost unchanged, whereas dissolved organic carbon (DOC), Cl - and SO 4 2- concentrations were higher by a factor of ~ 2 during summer 2012 compared to periods with normal temperatures. Similarly, most divalent metals and insoluble trivalent and tetravalent elements were more concentrated by a factor of 1.7–2.4 in the summer of 2012 than normal periods. The average concentrations of dissolved CO 2 and CH 4 during the hot summer of 2012 increased by factors of 1.4 and 4.9, respectively. For most of the trace elements bound to colloids, the degree of colloidal binding decreased by a factor of 1.44 ± 0.33 (for an average of 40 elements) during the hot summer of 2012 compared to normal periods. Increases in CO 2 and CH 4 concentrations with the decreasing size of the body of water were well-pronounced during the hot summer of 2012. The concentrations of CO 2 and CH 4 rose by factors of 5 and 150, respectively, in small (≤ 10 2 m 2 ) compared to large (≥ 10 4 m 2 ) ... Article in Journal/Newspaper permafrost Thermokarst Siberia Directory of Open Access Journals: DOAJ Articles Biogeosciences 10 8 5349 5365 |
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Directory of Open Access Journals: DOAJ Articles |
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ftdoajarticles |
language |
English |
topic |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
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Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 O. S. Pokrovsky L. S. Shirokova S. N. Kirpotin S. P. Kulizhsky S. N. Vorobiev Impact of western Siberia heat wave 2012 on greenhouse gases and trace metal concentration in thaw lakes of discontinuous permafrost zone |
topic_facet |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
description |
During the anomalously hot summer in 2012, surface air temperatures in Western Siberia were 5 to 15 °C higher than those observed during the previous period of > 30 yr. This unusual climate phenomenon provided an opportunity to examine the effects of short-term natural heating of water in thermokarst ponds and lakes in discontinuous permafrost zones and compare these observations to previous field results obtained when the temperature was normal during the summer of 2010 in the same region. In 2012, thermokarst bodies of water shrank significantly, water levels dropped approximately 50 cm in large lakes and small (< 10–100 m 2 ) ponds, and shallow soil depressions disappeared. Based on samples from ~ 40 bodies of water collected previously and in 2012, first-order features of changes in chemical composition in response to increased water temperatures (from 14.1 ± 2.2 to 23.8 ± 2.3 °C in 2010 and 2012, respectively) were established. In these thermokarst bodies of water that covered a full range of surface areas, the average conductivity and pH were almost unchanged, whereas dissolved organic carbon (DOC), Cl - and SO 4 2- concentrations were higher by a factor of ~ 2 during summer 2012 compared to periods with normal temperatures. Similarly, most divalent metals and insoluble trivalent and tetravalent elements were more concentrated by a factor of 1.7–2.4 in the summer of 2012 than normal periods. The average concentrations of dissolved CO 2 and CH 4 during the hot summer of 2012 increased by factors of 1.4 and 4.9, respectively. For most of the trace elements bound to colloids, the degree of colloidal binding decreased by a factor of 1.44 ± 0.33 (for an average of 40 elements) during the hot summer of 2012 compared to normal periods. Increases in CO 2 and CH 4 concentrations with the decreasing size of the body of water were well-pronounced during the hot summer of 2012. The concentrations of CO 2 and CH 4 rose by factors of 5 and 150, respectively, in small (≤ 10 2 m 2 ) compared to large (≥ 10 4 m 2 ) ... |
format |
Article in Journal/Newspaper |
author |
O. S. Pokrovsky L. S. Shirokova S. N. Kirpotin S. P. Kulizhsky S. N. Vorobiev |
author_facet |
O. S. Pokrovsky L. S. Shirokova S. N. Kirpotin S. P. Kulizhsky S. N. Vorobiev |
author_sort |
O. S. Pokrovsky |
title |
Impact of western Siberia heat wave 2012 on greenhouse gases and trace metal concentration in thaw lakes of discontinuous permafrost zone |
title_short |
Impact of western Siberia heat wave 2012 on greenhouse gases and trace metal concentration in thaw lakes of discontinuous permafrost zone |
title_full |
Impact of western Siberia heat wave 2012 on greenhouse gases and trace metal concentration in thaw lakes of discontinuous permafrost zone |
title_fullStr |
Impact of western Siberia heat wave 2012 on greenhouse gases and trace metal concentration in thaw lakes of discontinuous permafrost zone |
title_full_unstemmed |
Impact of western Siberia heat wave 2012 on greenhouse gases and trace metal concentration in thaw lakes of discontinuous permafrost zone |
title_sort |
impact of western siberia heat wave 2012 on greenhouse gases and trace metal concentration in thaw lakes of discontinuous permafrost zone |
publisher |
Copernicus Publications |
publishDate |
2013 |
url |
https://doi.org/10.5194/bg-10-5349-2013 https://doaj.org/article/4570df9a7e264031a5270b3853954751 |
genre |
permafrost Thermokarst Siberia |
genre_facet |
permafrost Thermokarst Siberia |
op_source |
Biogeosciences, Vol 10, Iss 8, Pp 5349-5365 (2013) |
op_relation |
http://www.biogeosciences.net/10/5349/2013/bg-10-5349-2013.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 doi:10.5194/bg-10-5349-2013 1726-4170 1726-4189 https://doaj.org/article/4570df9a7e264031a5270b3853954751 |
op_doi |
https://doi.org/10.5194/bg-10-5349-2013 |
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Biogeosciences |
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10 |
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8 |
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5349 |
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5365 |
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1766166204409446400 |