Examination of Relationships between Clear-Sky Longwave Radiation and Aspects of the Atmospheric Hydrological Cycle in Climate Models, Reanalyses, and Observations

Richard P. Allan Environmental Systems Science Centre, University of Reading, Reading, United Kingdom

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Abstract

Relationships between clear-sky longwave radiation and aspects of the atmospheric hydrological cycle are quantified in models, reanalyses, and observations over the period 1980–2000. The robust sensitivity of clear-sky surface net longwave radiation (SNLc) to column-integrated water vapor (CWV) of 1–1.5 W m−2 mm−1 combined with the positive relationship between CWV and surface temperature (Ts) explains substantial increases in clear-sky longwave radiative cooling of the atmosphere (QLWc) to the surface over the period. Clear-sky outgoing longwave radiation (OLRc) is highly sensitive to changes in aerosol and greenhouse gas concentrations in addition to temperature and humidity. Over tropical ocean regions of mean descent, QLWc increases with Ts at ∼3.5–5.5 W m−2 K−1 for reanalyses, estimates derived from satellite data, and models without volcanic forcing included. Increased QLWc with warming across the tropical oceans helps to explain model ensemble mean increases in precipitation of 0.1–0.15 mm day−1 K−1, which are primarily determined by ascent regions where precipitation increases at the rate expected from the Clausius–Clapeyron equation. The implications for future projections in the atmospheric hydrological cycle are discussed.

Corresponding author address: Richard Allan, Environmental Systems Science Centre, Harry Pitt Building, University of Reading, Reading, Berkshire RG6 6AL, United Kingdom. Email: rpa@mail.nerc-essc.ac.uk

Abstract

Relationships between clear-sky longwave radiation and aspects of the atmospheric hydrological cycle are quantified in models, reanalyses, and observations over the period 1980–2000. The robust sensitivity of clear-sky surface net longwave radiation (SNLc) to column-integrated water vapor (CWV) of 1–1.5 W m−2 mm−1 combined with the positive relationship between CWV and surface temperature (Ts) explains substantial increases in clear-sky longwave radiative cooling of the atmosphere (QLWc) to the surface over the period. Clear-sky outgoing longwave radiation (OLRc) is highly sensitive to changes in aerosol and greenhouse gas concentrations in addition to temperature and humidity. Over tropical ocean regions of mean descent, QLWc increases with Ts at ∼3.5–5.5 W m−2 K−1 for reanalyses, estimates derived from satellite data, and models without volcanic forcing included. Increased QLWc with warming across the tropical oceans helps to explain model ensemble mean increases in precipitation of 0.1–0.15 mm day−1 K−1, which are primarily determined by ascent regions where precipitation increases at the rate expected from the Clausius–Clapeyron equation. The implications for future projections in the atmospheric hydrological cycle are discussed.

Corresponding author address: Richard Allan, Environmental Systems Science Centre, Harry Pitt Building, University of Reading, Reading, Berkshire RG6 6AL, United Kingdom. Email: rpa@mail.nerc-essc.ac.uk

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  • Adger, N., and Coauthors, 2007: Summary for policy makers. Climate Change 2007: Impacts, Adaptation and Vulnerability, M. L. Parry et al., Eds., Cambridge University Press, 7–22.

    • Search Google Scholar
    • Export Citation
  • Adler, R. F., G. Gu, J-J. Wang, G. J. Huffman, S. Curtis, and D. Bolvin, 2008: Relationships between global precipitation and surface temperature on interannual and longer timescales (1979–2006). J. Geophys. Res., 113 , D22104. doi:10.1029/2008JD010536.

    • Search Google Scholar
    • Export Citation
  • Allan, R. P., 2006: Variability in clear-sky longwave radiative cooling of the atmosphere. J. Geophys. Res., 111 , D22105. doi:10.1029/2006JD007304.

    • Search Google Scholar
    • Export Citation
  • Allan, R. P., 2007: Improved simulation of water vapour and clear-sky radiation using 24-hour forecasts from ERA40. Tellus, 59A , 336343.

    • Search Google Scholar
    • Export Citation
  • Allan, R. P., and B. J. Soden, 2007: Large discrepancy between observed and simulated precipitation trends in the ascending and descending branches of the tropical circulation. Geophys. Res. Lett., 34 , L18705. doi:10.1029/2007GL031460.

    • Search Google Scholar
    • Export Citation
  • Allan, R. P., M. A. Ringer, and A. Slingo, 2003: Evaluation of moisture in the Hadley Centre climate model using simulations of HIRS water-vapour channel radiances. Quart. J. Roy. Meteor. Soc., 129 , 33713389.

    • Search Google Scholar
    • Export Citation
  • Allen, M. R., and W. J. Ingram, 2002: Constraints on future changes in climate and the hydrologic cycle. Nature, 419 , 224232.

  • Bodas-Salcedo, A., M. A. Ringer, and A. Jones, 2008: Evaluation of the surface radiation budget in the atmospheric component of the Hadley Centre Global Environmental Model (HadGEM1). J. Climate, 21 , 47234748.

    • Search Google Scholar
    • Export Citation
  • Chou, C., J. Tu, and P. Tan, 2007: Asymmetry of tropical precipitation change under global warming. Geophys. Res. Lett., 34 , L17708. doi:10.1029/2007GL030327.

    • Search Google Scholar
    • Export Citation
  • Collins, W. D., and Coauthors, 2006: The Community Climate System Model version 3 (CCSM3). J. Climate, 19 , 21222143.

  • Delworth, T. L., and Coauthors, 2006: GFDL’s CM2 global coupled climate models. Part I: Formulation and simulation characteristics. J. Climate, 19 , 643674.

    • Search Google Scholar
    • Export Citation
  • Emori, S., and S. J. Brown, 2005: Dynamic and thermodynamic changes in mean and extreme precipitation under changed climate. Geophys. Res. Lett., 32 , L17706. doi:10.1029/2005GL023272.

    • Search Google Scholar
    • Export Citation
  • Gordon, C., C. Cooper, C. A. Senior, H. Banks, J. M. Gregory, T. C. Johns, J. F. B. Mitchell, and R. A. Wood, 2000: The simulation of SST, sea ice extents and ocean heat transports in a version of the Hadley Centre coupled model without flux adjustments. Climate Dyn., 16 , 147168.

    • Search Google Scholar
    • Export Citation
  • Gordon, H. B., and Coauthors, 2002: The CSIRO Mk3 climate system model. Tech. Rep. 60, CSIRO Atmospheric Research, Aspendale, Victoria, Australia, 134 pp.

    • Search Google Scholar
    • Export Citation
  • Gregory, J., and M. Webb, 2008: Tropospheric adjustment induces a cloud component in CO2 forcing. J. Climate, 21 , 5871.

  • Gu, G., R. F. Adler, G. J. Huffman, and S. Curtis, 2007: Tropical rainfall variability on interannual-to-interdecadal and longer time scales derived from the GPCP monthly product. J. Climate, 20 , 40334046.

    • Search Google Scholar
    • Export Citation
  • Harries, J. E., and J. M. Futyan, 2006: On the stability of the Earth’s radiative energy balance: Response to the Mt. Pinatubo eruption. Geophys. Res. Lett., 33 , L23814. doi:10.1029/2006GL027457.

    • Search Google Scholar
    • Export Citation
  • Hasumi, H., and S. Emori, 2004: K-1 coupled model (MIROC) description. K-1 Tech. Rep. 1, Center for Climate System Research, University of Tokyo, 34 pp.

    • Search Google Scholar
    • Export Citation
  • Held, I. M., and B. J. Soden, 2006: Robust responses of the hydrological cycle to global warming. J. Climate, 19 , 56865699.

  • John, V. O., and B. J. Soden, 2007: Temperature and humidity biases in global climate models and their impact on climate feedbacks. Geophys. Res. Lett., 34 , L18704. doi:10.1029/2007GL030429.

    • Search Google Scholar
    • Export Citation
  • Johns, T. C., and Coauthors, 2006: The new Hadley Centre Climate Model (HadGEM1): Evaluation of coupled simulations. J. Climate, 19 , 13271353.

    • Search Google Scholar
    • Export Citation
  • Jungclaus, J. H., and Coauthors, 2006: Ocean circulation and tropical variability in the coupled model ECHAM5/MPI-OM. J. Climate, 19 , 39523972.

    • Search Google Scholar
    • Export Citation
  • Kalnay, E., and Coauthors, 1996: The NCEP/NCAR 40-Year Reanalysis Project. Bull. Amer. Meteor. Soc., 77 , 437471.

  • Kim, S. J., G. M. Flato, G. L. de Boer, and N. A. McFarlane, 2002: A coupled climate model simulation of the Last Glacial Maximum. Part I: Transient multi-decadal response. Climate Dyn., 19 , 515537.

    • Search Google Scholar
    • Export Citation
  • Lambert, H. F., and M. J. Webb, 2008: Dependency of global mean precipitation on surface temperature. Geophys. Res. Lett., 35 , L16706. doi:10.1029/2008GL034838.

    • Search Google Scholar
    • Export Citation
  • Liepert, B., J. Feichter, U. Lohmann, and E. Roeckner, 2004: Can aerosols spin down the hydrological cycle in a moister and warmer world? Geophys. Res. Lett., 31 , L06207. doi:10.1029/2003GL019060.

    • Search Google Scholar
    • Export Citation
  • Marti, O., and Coauthors, 2005: The new IPSL climate system model: IPSL-CM4. Tech. Rep., Institut Pierre Simon Laplace des Sciences de l’Environment Global, Case 101, Paris, France, 84 pp.

    • Search Google Scholar
    • Export Citation
  • Meehl, G. A., C. Covey, T. Delworth, M. Latif, B. McAvaneye, J. F. B. Mitchell, R. J. Stouffer, and K. E. Taylor, 2007: The WCRP CMIP3 multimodel dataset: A new era in climate change research. Bull. Amer. Meteor. Soc., 88 , 13831394.

    • Search Google Scholar
    • Export Citation
  • Mishchenko, M. I., I. V. Geogdzhayev, W. B. Rossow, B. Cairns, B. E. Carlson, A. A. Lacis, L. Liu, and L. D. Travis, 2007: Long-term satellite record reveals likely recent aerosol trend. Science, 315 , 1543.

    • Search Google Scholar
    • Export Citation
  • Neelin, J. D., M. Munnich, H. Su, J. E. Meyerson, and C. E. Holloway, 2006: Tropical drying trends in global warming models and observations. Proc. Natl. Acad. Sci. USA, 103 , 61106115.

    • Search Google Scholar
    • Export Citation
  • Prata, A. J., 1996: A new longwave formula for estimating downwelling clear sky radiation at the surface. Quart. J. Roy. Meteor. Soc., 122 , 11271151.

    • Search Google Scholar
    • Export Citation
  • Quartly, G. D., E. A. Kyte, M. A. Srokosz, and M. N. Tsimplis, 2007: An intercomparison of global oceanic precipitation climatologies. J. Geophys. Res., 112 , D10121. doi:10.1029/2006JD007810.

    • Search Google Scholar
    • Export Citation
  • Rayner, N. A., D. Parker, E. Horton, C. Folland, L. Alexander, D. Rowell, E. Kent, and A. Kaplan, 2003: Global analysis of SST, sea ice and night marine air temperature since the late nineteenth century. J. Geophys. Res., 108 , 4407. doi:10.1029/2002JD002670.

    • Search Google Scholar
    • Export Citation
  • Richter, I., and S. P. Xie, 2008: The muted precipitation increase in global warming simulations: A surface evaporation perspective. J. Geophys. Res., 113 , D24118. doi:10.1029/2008JD010561.

    • Search Google Scholar
    • Export Citation
  • Salas-Mélia, D., and Coauthors, 2005: Description and validation of the CNRM-CM3 global coupled model. CNRM Working Note 103, 36 pp. [Available from Météo-France, 42 Avenue Gaspard Coriolis, 31057 Toulouse CEDEX, France.].

    • Search Google Scholar
    • Export Citation
  • Schmidt, G. A., and Coauthors, 2006: Present-day atmospheric simulations using GISS ModelE: Comparison to in situ, satellite, and reanalysis data. J. Climate, 19 , 153192.

    • Search Google Scholar
    • Export Citation
  • Seager, R., and Coauthors, 2007: Model projections of an imminent transition to a more arid climate in southwestern North America. Science, 316 , 11811184.

    • Search Google Scholar
    • Export Citation
  • Shell, K. M., J. T. Kiehl, and C. A. Shields, 2008: Using the radiative kernel technique to calculate climate feedbacks in NCAR’s Community Atmospheric Model. J. Climate, 21 , 22692282.

    • Search Google Scholar
    • Export Citation
  • Slingo, A., J. A. Pamment, R. P. Allan, and P. Wilson, 2000: Water vapor feedbacks in the ECMWF reanalyses and Hadley Centre climate model. J. Climate, 13 , 30803098.

    • Search Google Scholar
    • Export Citation
  • Soden, B. J., D. L. Jackson, V. Ramaswamy, M. D. Schwarzkopf, and X. Huang, 2005: The radiative signature of upper tropospheric moistening. Science, 310 , 841844.

    • Search Google Scholar
    • Export Citation
  • Sohn, B-J., and R. Bennartz, 2008: Contribution of water vapor to observational estimates of longwave cloud radiative forcing. J. Geophys. Res., 113 , D20107. doi:10.1029/2008JD010053.

    • Search Google Scholar
    • Export Citation
  • Trenberth, K. E., 2002: Changes in tropical clouds and radiation. Science, 296 , 2095.

  • Trenberth, K. E., A. Dai, R. M. Rasmussen, and D. B. Parsons, 2003: The changing character of precipitation. Bull. Amer. Meteor. Soc., 84 , 12051217.

    • Search Google Scholar
    • Export Citation
  • Trenberth, K. E., J. Fasullo, and L. Smith, 2005: Trends and variability in column-integrated atmospheric water vapor. Climate Dyn., 24 , 741758.

    • Search Google Scholar
    • Export Citation
  • Uppala, S. M., and Coauthors, 2005: The ERA-40 Re-Analysis. Quart. J. Roy. Meteor. Soc., 131 , 29613012.

  • Volodin, E. M., and N. A. Diansky, 2004: El Niño reproduction in coupled general circulation model. Russ. Meteor. Hydrol., 12 , 514.

  • Washington, W. M., and Coauthors, 2000: Parallel climate model (PCM) control and transient simulations. Climate Dyn., 16 , 755774.

  • Wentz, F. J., and E. A. Francis, 1992: Nimbus-7 SMMR ocean products, 1979–1984. Remote Sensing Systems Tech. Rep. 033192, 36 pp. [Available from Remote Sensing Systems, 1101 College Ave., Santa Rosa, CA 95404.].

    • Search Google Scholar
    • Export Citation
  • Wentz, F. J., L. Ricciardulli, K. Hilburn, and C. Mears, 2007: How much more rain will global warming bring? Science, 317 , 233235.

  • Wielicki, B. A., and Coauthors, 2002: Evidence for large decadal variability in the tropical mean radiative energy budget. Science, 295 , 841844.

    • Search Google Scholar
    • Export Citation
  • Wild, M., 2008: Shortwave and longwave surface radiation budgets in GCMs: A review based on the IPCC-AR4/CMIP3 models. Tellus, 60A , 932945.

    • Search Google Scholar
    • Export Citation
  • Wild, M., and Coauthors, 2005: From dimming to brightening: Decadal changes in solar radiation at earth’s surface. Science, 308 , 847850.

    • Search Google Scholar
    • Export Citation
  • Wild, M., J. Grieser, and C. Schär, 2008: Combined surface solar brightening and increasing greenhouse effect favour recent intensification of the hydrological cycle. Geophys. Res. Lett., 35 , L17706. doi:10.1029/2008GL034842.

    • Search Google Scholar
    • Export Citation
  • Willett, K. M., P. D. Jones, N. P. Gillett, and P. W. Thorne, 2008: Recent changes in surface humidity: Development of the HadCRUH dataset. J. Climate, 21 , 53645383.

    • Search Google Scholar
    • Export Citation
  • Xie, P., and P. A. Arkin, 1998: Global monthly precipitation estimates from satellite-observed outgoing longwave radiation. J. Climate, 11 , 137164.

    • Search Google Scholar
    • Export Citation
  • Yang, F., A. Kumar, M. E. Schlesinger, and W. Wang, 2003: Intensity of hydrological cycles in warmer climates. J. Climate, 16 , 24192423.

    • Search Google Scholar
    • Export Citation
  • Yang, H., and K. K. Tung, 1998: Water vapor, surface temperature, and the greenhouse effect—A statistical analysis of tropical-mean data. J. Climate, 11 , 26862697.

    • Search Google Scholar
    • Export Citation
  • Yin, X., A. Gruber, and P. Arkin, 2004: Comparison of the GPCP and CMAP merged gauge–satellite monthly precipitation products for the period 1979–2001. J. Hydrometeor., 5 , 12071222.

    • Search Google Scholar
    • Export Citation
  • Yu, L., 2007: Global variations in oceanic evaporation (1958–2005): The role of the changing wind speed. J. Climate, 20 , 53765390.

  • Yu, L., and R. A. Weller, 2007: Objectively analyzed air–sea heat fluxes for the global ice-free oceans (1981–2005). Bull. Amer. Meteor. Soc., 88 , 527539.

    • Search Google Scholar
    • Export Citation
  • Yukimoto, S., and A. Noda, 2002: Improvements in the Meteorological Research Institute Global Ocean-Atmosphere Coupled GCM (MRI-CGCM2) and its climate sensitivity. Tech. Rep. 10, NIES, Japan, 8 pp.

    • Search Google Scholar
    • Export Citation
  • Zhang, X., F. W. Zwiers, G. C. Hegerl, F. H. Lambert, N. P. Gillett, S. Solomon, P. A. Stott, and T. Nozawa, 2007: Detection of human influence on twentieth-century precipitation trends. Nature, 448 , 461465.

    • Search Google Scholar
    • Export Citation
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