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  • Weitere  (2)
  • East Asia  (1)
  • precipitation  (1)
  • 114-704A; 114-704B; 161-978A; 165-999A; 184-1143A; 184-1143B; 184-1143C; 184-1148A; 184-1148B; 22-214; 306-U1313B; 306-U1313C; Age; Alboran Sea; alkenone SST; benthic and planktonic foraminifers; Caribbean Sea; d18O of planktic foraminifera; Depth, composite; DEPTH, sediment/rock; DRILL; Drilling/drill rig; Event label; Exp306; Extracted from PlioVAR KM5c SST Database; Foraminifera, planktic δ18O; foraminifera oxygen isotopes; From literature; Glomar Challenger; Indian Ocean//RIDGE; Joides Resolution; Leg114; Leg161; Leg165; Leg184; Leg22; Literature search; Mg/Ca-based sea surface temperature; North Atlantic Climate 2; Northern Hemisphere glaciation; PAGES_PlioVAR; Pleistocene; Pliocene; PlioVAR - Pliocene climate variability over glacial-interglacial timescales; Reference/source; Sample code/label; Sample ID; Site; South Atlantic Ocean; South China Sea; Species, unique identification; Uniform resource locator/link to raw data file; Uniform resource locator/link to reference
Publikationsart
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  • East Asia  (1)
  • precipitation  (1)
  • 114-704A; 114-704B; 161-978A; 165-999A; 184-1143A; 184-1143B; 184-1143C; 184-1148A; 184-1148B; 22-214; 306-U1313B; 306-U1313C; Age; Alboran Sea; alkenone SST; benthic and planktonic foraminifers; Caribbean Sea; d18O of planktic foraminifera; Depth, composite; DEPTH, sediment/rock; DRILL; Drilling/drill rig; Event label; Exp306; Extracted from PlioVAR KM5c SST Database; Foraminifera, planktic δ18O; foraminifera oxygen isotopes; From literature; Glomar Challenger; Indian Ocean//RIDGE; Joides Resolution; Leg114; Leg161; Leg165; Leg184; Leg22; Literature search; Mg/Ca-based sea surface temperature; North Atlantic Climate 2; Northern Hemisphere glaciation; PAGES_PlioVAR; Pleistocene; Pliocene; PlioVAR - Pliocene climate variability over glacial-interglacial timescales; Reference/source; Sample code/label; Sample ID; Site; South Atlantic Ocean; South China Sea; Species, unique identification; Uniform resource locator/link to raw data file; Uniform resource locator/link to reference
  • climate modeling  (2)
  • AWI‐CM3  (1)
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  • 1
    Publikationsdatum: 2023-11-24
    Beschreibung: The Middle Miocene (15.99–11.65 Ma) of Europe witnessed major climatic, environmental, and vegetational change, yet we are lacking detailed reconstructions of Middle Miocene temperature and precipitation patterns over Europe. Here, we use a high‐resolution (∼0.75°) isotope‐enabled general circulation model (ECHAM5‐wiso) with time‐specific boundary conditions to investigate changes in temperature, precipitation, and δ〈sup〉18〈/sup〉O in precipitation (δ〈sup〉18〈/sup〉O〈sub〉p〈/sub〉). Experiments were designed with variable elevation configurations of the European Alps and different atmospheric CO〈sub〉2〈/sub〉 levels to examine the influence of Alpine elevation and global climate forcing on regional climate and δ〈sup〉18〈/sup〉Op patterns. Modeling results are in agreement with available paleobotanical temperature data and with low‐resolution Middle Miocene experiments of the Miocene Model Intercomparison Project (MioMIP1). However, simulated precipitation rates are 300–500 mm/yr lower in the Middle Miocene than for pre‐industrial times for central Europe. This result is consistent with precipitation estimates from herpetological fossil assemblages, but contradicts precipitation estimates from paleobotanical data. We attribute the Middle Miocene precipitation change in Europe to shifts in large‐scale pressure patterns in the North Atlantic and over Europe and associated changes in wind direction and humidity. We suggest that global climate forcing contributed to a maximum δ〈sup〉18〈/sup〉O〈sub〉p〈/sub〉 change of ∼2‰ over high elevation (Alps) and ∼1‰ over low elevation regions. In contrast, we observe a maximum modeled δ〈sup〉18〈/sup〉O〈sub〉p〈/sub〉 decrease of 8‰ across the Alpine orogen due to Alpine topography. However, the elevation‐δ〈sup〉18〈/sup〉O〈sub〉p〈/sub〉 lapse rate shallows in the Middle Miocene, leading to a possible underestimation of paleotopography when using present‐day δ〈sup〉18〈/sup〉O〈sub〉p〈/sub〉—elevation relationships data for stable isotope paleoaltimetry studies.
    Beschreibung: Key Points: A high‐resolution isotope‐enabled general circulation model is used to explore Middle Miocene climate and precipitation δ〈sup〉18〈/sup〉O across Europe. Middle Miocene bi‐directional precipitation change consistent with herpetological fossils and account for precipitation δ〈sup〉18〈/sup〉O variations. Global Miocene climate forcing contributed a max δ〈sup〉18〈/sup〉O change of ∼2‰ over the high Alpine elevation and to ∼1‰ over low elevation.
    Beschreibung: German research fondation
    Beschreibung: Alexander‐von‐Humboldt foundation, Feodor‐Lynen‐Fellowship
    Beschreibung: Alexander‐von‐Humboldt foundation, Humboldt Research Fellowship
    Beschreibung: Scientific Steering Committee
    Beschreibung: https://mpimet.mpg.de/fileadmin/projekte/ICON-ESM/mpi-m_sla_201202.pdf
    Beschreibung: https://gitlab.awi.de/mwerner/mpi-esm-wiso
    Beschreibung: https://zenodo.org/record/6308475#.Y0gmDSFS-2w
    Schlagwort(e): ddc:550.724 ; Europe ; Middle Miocene ; climate modeling ; stable water isotopes ; temperature ; precipitation ; paleoclimate ; paleoelevation ; Alps
    Sprache: Englisch
    Materialart: doc-type:article
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 2
    Publikationsdatum: 2023-11-13
    Beschreibung: 〈title xmlns:mml="http://www.w3.org/1998/Math/MathML"〉Abstract〈/title〉〈p xmlns:mml="http://www.w3.org/1998/Math/MathML" xml:lang="en"〉Owing to the complicated spatial–temporal characteristics of East Asian precipitation (EAP), climate models have limited skills in simulating the modern Asian climate. This consequently leads to large uncertainties in simulations of the past EAP variation and future projections. Here, we explore the performance of the newly developed Alfred Wegener Institute Climate Model, version 3 (AWI‐CM3) in simulating the climatological summer EAP. To test whether the model's skill depends on its atmosphere resolution, we design two AWI‐CM3 simulations with different horizontal resolutions. The result shows that both simulations have acceptable performance in simulating the summer mean EAP, generally better than the majority of individual models participating in the Coupled Model Intercomparison Project (CMIP6). However, for the monthly EAP from June to August, AWI‐CM3 exhibits a decayed skill, which is due to the subseasonal movement of the western Pacific subtropical high bias. The higher‐resolution AWI‐CM3 simulation shows an overall improvement relative to the one performed at a relatively lower resolution in all aspects taken into account regarding the EAP. We conclude that AWI‐CM3 is a suitable tool for exploring the EAP for the observational period. Having verified the model's skill for modern climate, we suggest employing the AWI‐CM3, especially with high atmosphere resolution, both for applications in paleoclimate studies and future projections.〈/p〉
    Beschreibung: 〈p xmlns:mml="http://www.w3.org/1998/Math/MathML" xml:lang="en"〉This figure shows the skill scores of AWI‐CM3 and CMIP6 models in simulating the climatological summer East Asian precipitation (EAP), which indicates that AWI‐CM3 simulations perform better than most CMIP6 individual models for the summer mean EAP, while AWI‐CM3's skills decay from June to August.〈boxed-text position="anchor" content-type="graphic" id="joc8075-blkfxd-0001" xml:lang="en"〉 〈graphic position="anchor" id="jats-graphic-1" xlink:href="urn:x-wiley:08998418:media:joc8075:joc8075-toc-0001"〉 〈alt-text〉image〈/alt-text〉 〈/graphic〉 〈/boxed-text〉〈/p〉
    Beschreibung: National Natural Science Foundation of China http://dx.doi.org/10.13039/501100001809
    Beschreibung: Deutsche Forschungsgemeinschaft http://dx.doi.org/10.13039/501100001659
    Beschreibung: Helmholtz Climate Initiative REKLIM
    Beschreibung: Helmholtz Program
    Beschreibung: Bundesministerium für Bildung und Forschung http://dx.doi.org/10.13039/501100002347
    Beschreibung: China Scholarship Council http://dx.doi.org/10.13039/501100004543
    Beschreibung: https://opendata.dwd.de/climate_environment/GPCC/html/fulldata-monthly_v2022_doi_download.html
    Beschreibung: https://crudata.uea.ac.uk/cru/data/hrg/cru_ts_4.05
    Beschreibung: http://aphrodite.st.hirosaki-u.ac.jp/products.html
    Beschreibung: https://jra.kishou.go.jp/JRA-55/index_en.html
    Beschreibung: https://esgf-node.llnl.gov/search/cmip6
    Schlagwort(e): ddc:551.6 ; AWI‐CM3 ; CMIP6 ; East Asia ; summer precipitation
    Sprache: Englisch
    Materialart: doc-type:article
    Standort Signatur Einschränkungen Verfügbarkeit
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