Natural climate variability is an important aspect of future projections of snow water resources and rain-on-snow events
Climate projection studies of future changes in snow conditions and resulting rain-on-snow (ROS) flood events are subject to large uncertainties. Typically, emission scenario uncertainties and climate model uncertainties are included. This is the first study on this topic to also include quantificat...
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00062487 2023-05-15T18:32:33+02:00 Natural climate variability is an important aspect of future projections of snow water resources and rain-on-snow events Schirmer, Michael Winstral, Adam Jonas, Tobias Burlando, Paolo Peleg, Nadav 2022-09 electronic https://doi.org/10.5194/tc-16-3469-2022 https://noa.gwlb.de/receive/cop_mods_00062487 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00061742/tc-16-3469-2022.pdf https://tc.copernicus.org/articles/16/3469/2022/tc-16-3469-2022.pdf eng eng Copernicus Publications The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-16-3469-2022 https://noa.gwlb.de/receive/cop_mods_00062487 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00061742/tc-16-3469-2022.pdf https://tc.copernicus.org/articles/16/3469/2022/tc-16-3469-2022.pdf https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess CC-BY article Verlagsveröffentlichung article Text doc-type:article 2022 ftnonlinearchiv https://doi.org/10.5194/tc-16-3469-2022 2022-09-04T23:11:54Z Climate projection studies of future changes in snow conditions and resulting rain-on-snow (ROS) flood events are subject to large uncertainties. Typically, emission scenario uncertainties and climate model uncertainties are included. This is the first study on this topic to also include quantification of natural climate variability, which is the dominant uncertainty for precipitation at local scales with large implications for runoff projections, for example. To quantify natural climate variability, a weather generator was applied to simulate inherently consistent climate variables for multiple realizations of current and future climates at 100 m spatial and hourly temporal resolution over a 12×12 km high-altitude study area in the Swiss Alps. The output of the weather generator was used as input for subsequent simulations with an energy balance snow model. The climate change signal for snow water resources stands out as early as mid-century from the noise originating from the three sources of uncertainty investigated, namely uncertainty in emission scenarios, uncertainty in climate models, and natural climate variability. For ROS events, a climate change signal toward more frequent and intense events was found for an RCP 8.5 scenario at high elevations at the end of the century, consistently with other studies. However, for ROS events with a substantial contribution of snowmelt to runoff (> 20 %), the climate change signal was largely masked by sources of uncertainty. Only those ROS events where snowmelt does not play an important role during the event will occur considerably more frequently in the future, while ROS events with substantial snowmelt contribution will mainly occur earlier in the year but not more frequently. There are two reasons for this: first, although it will rain more frequently in midwinter, the snowpack will typically still be too cold and dry and thus cannot contribute significantly to runoff; second, the very rapid decline in snowpack toward early summer, when conditions typically ... Article in Journal/Newspaper The Cryosphere Niedersächsisches Online-Archiv NOA Midwinter ENVELOPE(139.931,139.931,-66.690,-66.690) The Cryosphere 16 9 3469 3488 |
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article Verlagsveröffentlichung Schirmer, Michael Winstral, Adam Jonas, Tobias Burlando, Paolo Peleg, Nadav Natural climate variability is an important aspect of future projections of snow water resources and rain-on-snow events |
topic_facet |
article Verlagsveröffentlichung |
description |
Climate projection studies of future changes in snow conditions and resulting rain-on-snow (ROS) flood events are subject to large uncertainties. Typically, emission scenario uncertainties and climate model uncertainties are included. This is the first study on this topic to also include quantification of natural climate variability, which is the dominant uncertainty for precipitation at local scales with large implications for runoff projections, for example. To quantify natural climate variability, a weather generator was applied to simulate inherently consistent climate variables for multiple realizations of current and future climates at 100 m spatial and hourly temporal resolution over a 12×12 km high-altitude study area in the Swiss Alps. The output of the weather generator was used as input for subsequent simulations with an energy balance snow model. The climate change signal for snow water resources stands out as early as mid-century from the noise originating from the three sources of uncertainty investigated, namely uncertainty in emission scenarios, uncertainty in climate models, and natural climate variability. For ROS events, a climate change signal toward more frequent and intense events was found for an RCP 8.5 scenario at high elevations at the end of the century, consistently with other studies. However, for ROS events with a substantial contribution of snowmelt to runoff (> 20 %), the climate change signal was largely masked by sources of uncertainty. Only those ROS events where snowmelt does not play an important role during the event will occur considerably more frequently in the future, while ROS events with substantial snowmelt contribution will mainly occur earlier in the year but not more frequently. There are two reasons for this: first, although it will rain more frequently in midwinter, the snowpack will typically still be too cold and dry and thus cannot contribute significantly to runoff; second, the very rapid decline in snowpack toward early summer, when conditions typically ... |
format |
Article in Journal/Newspaper |
author |
Schirmer, Michael Winstral, Adam Jonas, Tobias Burlando, Paolo Peleg, Nadav |
author_facet |
Schirmer, Michael Winstral, Adam Jonas, Tobias Burlando, Paolo Peleg, Nadav |
author_sort |
Schirmer, Michael |
title |
Natural climate variability is an important aspect of future projections of snow water resources and rain-on-snow events |
title_short |
Natural climate variability is an important aspect of future projections of snow water resources and rain-on-snow events |
title_full |
Natural climate variability is an important aspect of future projections of snow water resources and rain-on-snow events |
title_fullStr |
Natural climate variability is an important aspect of future projections of snow water resources and rain-on-snow events |
title_full_unstemmed |
Natural climate variability is an important aspect of future projections of snow water resources and rain-on-snow events |
title_sort |
natural climate variability is an important aspect of future projections of snow water resources and rain-on-snow events |
publisher |
Copernicus Publications |
publishDate |
2022 |
url |
https://doi.org/10.5194/tc-16-3469-2022 https://noa.gwlb.de/receive/cop_mods_00062487 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00061742/tc-16-3469-2022.pdf https://tc.copernicus.org/articles/16/3469/2022/tc-16-3469-2022.pdf |
long_lat |
ENVELOPE(139.931,139.931,-66.690,-66.690) |
geographic |
Midwinter |
geographic_facet |
Midwinter |
genre |
The Cryosphere |
genre_facet |
The Cryosphere |
op_relation |
The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-16-3469-2022 https://noa.gwlb.de/receive/cop_mods_00062487 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00061742/tc-16-3469-2022.pdf https://tc.copernicus.org/articles/16/3469/2022/tc-16-3469-2022.pdf |
op_rights |
https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5194/tc-16-3469-2022 |
container_title |
The Cryosphere |
container_volume |
16 |
container_issue |
9 |
container_start_page |
3469 |
op_container_end_page |
3488 |
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1766216734105141248 |