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Suppression of Cold Weather Events over High-Latitude Continents in Warm Climates

Suppression of Cold Weather Events over High-Latitude Continents in Warm Climates AbstractRecent studies, using Lagrangian single-column atmospheric models, have proposed that in warmer climates more low clouds would form as maritime air masses advect into Northern Hemisphere high-latitude continental interiors during winter (DJF). This increase in low cloud amount and optical thickness could reduce surface radiative cooling and suppress Arctic air formation events, partly explaining both the warm winter high-latitude continental interior climate and frost-intolerant species found there during the Eocene and the positive lapse-rate feedback in future Arctic climate change scenarios. Here the authors examine the robustness of this low-cloud mechanism in a three-dimensional atmospheric model that includes large-scale dynamics. Different warming scenarios are simulated under prescribed CO2 and sea surface temperature, and the sensitivity of winter temperatures and clouds over high-latitude continental interior to mid- and high-latitude sea surface temperatures is examined. Model results show that winter 2-m temperatures on extreme cold days increase about 50% faster than the winter mean temperatures and the prescribed SST. Low cloud fraction and surface longwave cloud radiative forcing also increase in both the winter mean state and on extreme cold days, consistent with previous Lagrangian air-mass studies, but with cloud fraction increasing for different reasons than proposed by previous work. At high latitudes, the cloud longwave warming effect dominates the shortwave cooling effect, and the net cloud radiative forcing at the surface tends to warm high-latitude land but cool midlatitude land. This could contribute to the reduced meridional temperature gradient in warmer climates and help explain the greater warming of winter cold extremes relative to winter mean temperatures. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Climate American Meteorological Society

Suppression of Cold Weather Events over High-Latitude Continents in Warm Climates

Hu, Zeyuan; Cronin, Timothy W.; Tziperman, Eli
Journal of Climate , Volume 31 (23): 16 – Dec 4, 2018
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Publisher
American Meteorological Society
Copyright
Copyright © American Meteorological Society
ISSN
1520-0442
eISSN
1520-0442
DOI
10.1175/JCLI-D-18-0129.1
Publisher site
See Article on Publisher Site

Abstract

AbstractRecent studies, using Lagrangian single-column atmospheric models, have proposed that in warmer climates more low clouds would form as maritime air masses advect into Northern Hemisphere high-latitude continental interiors during winter (DJF). This increase in low cloud amount and optical thickness could reduce surface radiative cooling and suppress Arctic air formation events, partly explaining both the warm winter high-latitude continental interior climate and frost-intolerant species found there during the Eocene and the positive lapse-rate feedback in future Arctic climate change scenarios. Here the authors examine the robustness of this low-cloud mechanism in a three-dimensional atmospheric model that includes large-scale dynamics. Different warming scenarios are simulated under prescribed CO2 and sea surface temperature, and the sensitivity of winter temperatures and clouds over high-latitude continental interior to mid- and high-latitude sea surface temperatures is examined. Model results show that winter 2-m temperatures on extreme cold days increase about 50% faster than the winter mean temperatures and the prescribed SST. Low cloud fraction and surface longwave cloud radiative forcing also increase in both the winter mean state and on extreme cold days, consistent with previous Lagrangian air-mass studies, but with cloud fraction increasing for different reasons than proposed by previous work. At high latitudes, the cloud longwave warming effect dominates the shortwave cooling effect, and the net cloud radiative forcing at the surface tends to warm high-latitude land but cool midlatitude land. This could contribute to the reduced meridional temperature gradient in warmer climates and help explain the greater warming of winter cold extremes relative to winter mean temperatures.

Journal

Journal of Climate – American Meteorological Society

Published: Dec 4, 2018

References

  • A high latitude convective cloud feedback and equable climates
    Abbot, D. S.; Tziperman, E.
  • Sea ice, high-latitude convection, and equable climates
    Abbot, D. S.; Tziperman, E.
  • Controls on the activation and strength of a high-latitude convective cloud feedback
    Abbot, D. S.; Tziperman, E.
  • High-CO2 cloud radiative forcing feedback over both land and ocean in a global climate model
    Abbot, D. S.; Huber, M.; Bousquet, G.; Walker, C. C.
  • Can a convective cloud feedback help to eliminate winter sea ice at high CO2 concentrations?
    Abbot, D. S.; Walker, C.; Tziperman, E.
  • Polar amplification: Is atmospheric heat transport important?
    Alexeev, V. A.; Jackson, C. H.
  • Effects of explicit atmospheric convection at high CO2
    Arnold, N.; Branson, M.; Burt, M. A.; Abbot, D. S.; Kuang, Z.; Randall, D. A.; Tziperman, E.
  • Recent Arctic amplification and extreme mid-latitude weather
    Cohen, J.
  • Low clouds suppress Arctic air formation and amplify high-latitude continental winter warming
    Cronin, T. W.; Tziperman, E.
  • Suppression of Arctic air formation with climate warming: Investigation with a two-dimensional cloud-resolving model
    Cronin, T. W.; Li, H.; Tziperman, E.
  • On the formation of continental polar air
    Curry, J.
  • A simple model of multiple climate regimes
    Emanuel, K.
  • Equable climate dynamics
    Farrell, B. F.
  • Persistent cold air outbreaks over North America in a warming climate
    Gao, Y.; Leung, L. R.; Lu, J.; Masato, G.
  • The Community Climate System Model version 4
    Gent, P. R.
  • The role of downward infrared radiation in the recent Arctic winter warming trend
    Gong, T.; Feldstein, S.; Lee, S.
  • Eocene continental climates and latitudinal temperature gradients
    Greenwood, D. R.; Wing, S. L.
  • The early Eocene equable climate problem revisited
    Huber, M.; Caballero, R.
  • Surface irradiances of edition 4.0 Clouds and the Earth’s Radiant Energy System (CERES) Energy Balanced and Filled (EBAF) data product
    Kato, S.
  • The influence of local feedbacks and northward heat transport on the equilibrium Arctic climate response to increased greenhouse gas forcing
    Kay, J. E.; Holland, M. M.; Bitz, C. M.; Blanchard-Wrigglesworth, E.; Gettelman, A.; Conley, A.; Bailey, D.
  • On the feedback of stratospheric clouds on polar climate
    Kirk-Davidoff, D. B.; Schrag, D. P.; Anderson, J. G.
  • The dynamic response of the winter stratosphere to an equable climate surface temperature gradient
    Korty, R. L.; Emanuel, K. A.
  • Tropical cyclone-induced upper-ocean mixing and climate: Application to equable climates
    Korty, R. L.; Emanuel, K. A.; Scott, J. R.
  • Parameterization improvements and functional and structural advances in version 4 of the Community Land Model
    Lawrence, D. M.
  • “Equability,” continentality, and tertiary “climate”: The crocodilian perspective
    Markwick, P. J.
  • Fossil crocodilians as indicators of late Cretaceous and Cenozoic climates: Implications for using palaeontological data in reconstructing palaeoclimate
    Markwick, P. J.
  • Mixed-phase cloud physics and Southern Ocean cloud feedback in climate models
    McCoy, D. T.; Hartmann, D. L.; Zelinka, M. D.; Ceppi, P.; Grosvenor, D. P.
  • Arctic amplification dominated by temperature feedbacks in contemporary climate models
    Pithan, F.; Mauritsen, T.
  • Mixed-phase clouds cause climate model biases in Arctic wintertime temperature inversions
    Pithan, F.; Medeiros, B.; Mauritsen, T.
  • Select strengths and biases of models in representing the Arctic winter boundary layer over sea ice: The Larcform 1 single column model intercomparison
    Pithan, F.
  • Scenarios of long-term socio-economic and environmental development under climate stabilization
    Riahi, K.; Grübler, A.; Nakicenovic, N.
  • Physics of changes in synoptic midlatitude temperature variability
    Schneider, T.; Bischoff, T.; Płotka, H.
  • Arctic amplification decreases temperature variance in northern mid- to high-latitudes
    Screen, J. A.
  • The central role of diminishing sea ice in recent Arctic temperature amplification
    Screen, J. A.; Simmonds, I.
  • Reduced risk of North American cold extremes due to continued Arctic sea ice loss
    Screen, J. A.; Deser, C.; Sun, L.
  • Possible methane-induced polar warming in the early Eocene
    Sloan, L. C.; Walker, J. C. G.; Moore, T. C.; Rea, D. K.; Zachos, J. C.
  • Synoptically driven Arctic winter states
    Stramler, K.; Genio, A. D. D.; Rossow, W. B.
  • The representative concentration pathways: An overview
    van Vuuren, D. P.
  • An improved parameterization for simulating Arctic cloud amount in the CCSM3 climate model
    Vavrus, S.; Waliser, D.
  • The behavior of extreme cold air outbreaks under greenhouse warming
    Vavrus, S.; Walsh, J.; Chapman, W.; Portis, D.
  • Fossils and fossil climate: The case for equable continental interiors in the Eocene
    Wing, S. L.; Greenwood, D. R.