CSE Water and Energy Budgets in the NCEP–DOE Reanalysis II

J. Roads Scripps Institution of Oceanography, University of California, San Diego, La Jolla, California

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M. Kanamitsu NCEP, Camp Springs, Maryland

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R. Stewart Meteorological Service of Canada, Toronto, Ontario, Canada

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Abstract

During the past several years, the Global Energy and Water Cycle Experiment (GEWEX) continental-scale experiments (CSEs) have started to develop regional hydroclimatological datasets and water and energy budget studies (WEBS). To provide some global background for these regional experiments, the authors describe vertically integrated global and regional water and energy budgets from the National Centers for Environmental Prediction (NCEP)–U.S. Department of Energy (DOE) Reanalysis II (NCEPRII). It is shown that maintaining the NCEPRII close to observations requires some nudging to the short-range model forecast, and this nudging is an important component of analysis budgets. Still, to first order one can discern important hydroclimatological mechanisms in the reanalysis. For example, during summer, atmospheric water vapor, precipitation, evaporation, and surface and atmospheric radiative heating all increase, while the dry static energy convergence decreases almost everywhere over the land regions. One can further distinguish differences between hydrologic cycles in midlatitudes and monsoon regions. The monsoon hydrologic cycle shows increased moisture convergence, soil moisture, and runoff, but decreased sensible heating with increasing surface temperature. The midlatitude hydrologic cycle, on the other hand, shows decreased moisture convergence and surface water, and increased sensible heating.

Corresponding author address: Dr. John O. Roads, Climate Research Division, Scripps Institution of Oceanography, SIO/UCSD-0224, La Jolla, CA 92093-0224. Email: jroads@ucsd.edu

Abstract

During the past several years, the Global Energy and Water Cycle Experiment (GEWEX) continental-scale experiments (CSEs) have started to develop regional hydroclimatological datasets and water and energy budget studies (WEBS). To provide some global background for these regional experiments, the authors describe vertically integrated global and regional water and energy budgets from the National Centers for Environmental Prediction (NCEP)–U.S. Department of Energy (DOE) Reanalysis II (NCEPRII). It is shown that maintaining the NCEPRII close to observations requires some nudging to the short-range model forecast, and this nudging is an important component of analysis budgets. Still, to first order one can discern important hydroclimatological mechanisms in the reanalysis. For example, during summer, atmospheric water vapor, precipitation, evaporation, and surface and atmospheric radiative heating all increase, while the dry static energy convergence decreases almost everywhere over the land regions. One can further distinguish differences between hydrologic cycles in midlatitudes and monsoon regions. The monsoon hydrologic cycle shows increased moisture convergence, soil moisture, and runoff, but decreased sensible heating with increasing surface temperature. The midlatitude hydrologic cycle, on the other hand, shows decreased moisture convergence and surface water, and increased sensible heating.

Corresponding author address: Dr. John O. Roads, Climate Research Division, Scripps Institution of Oceanography, SIO/UCSD-0224, La Jolla, CA 92093-0224. Email: jroads@ucsd.edu

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  • Arakawa, A., and Schubert W. , 1974: Interaction of a cumulus ensemble with the large-scale environment, Part I. J. Atmos. Sci., 31 , 674701.

    • Crossref
    • Search Google Scholar
    • Export Citation
  • Betts, A. K., Chen F. , Mitchell K. , and Janjić Z. , 1997: Assessment of land surface and boundary layer models in two operational versions of the NCEP Eta Model using FIFE data. Mon. Wea. Rev., 125 , 28962916.

    • Crossref
    • Search Google Scholar
    • Export Citation
  • Caplan, P., Derber J. , Gemmil W. , Hong S-Y. , Pan H-L. , and Parrish D. , 1997: Changes to the 1995 NCEP operation medium-range forecast model analysis-forecast system. Wea. Forecasting, 12 , 581594.

    • Crossref
    • Search Google Scholar
    • Export Citation
  • Chahine, M. T., Haskins R. , and Fetzer E. , 1997: Observation of the recycling rate of moisture in the atmosphere: 1988–1994. GEWEX News, Vol. 7, 1–3.

    • Search Google Scholar
    • Export Citation
  • Chen, F., and Coauthors. 1996: Modeling of land-surface evaporation by four schemes and comparison with FIFE observations. J. Geophys. Res., 101 , 72517268.

    • Crossref
    • Search Google Scholar
    • Export Citation
  • Chen, S,C., Norris, and Roads J. O. , 1996: Balancing the atmospheric hydrologic budget. J. Geophys. Res., 101 , 73417358.

  • D'Amato, N., and Lebel T. , 1998: On the characteristics of the rainfall events in the Sahel with a view to the analysis of climatic variability. Int. J. Climatol., 18 , 955974.

    • Crossref
    • Search Google Scholar
    • Export Citation
  • Fekete, B. M., Vorosmarty C. J. , and Grabs W. , 1999: Global composite runoff fields on observed river discharge and simulated water balances. Tech. Rep. 22, Global Runoff Data Centre, Koblenz, Germany, 97 pp.

    • Search Google Scholar
    • Export Citation
  • GAME International Science Panel, 1998: GEWEX Asian Monsoon Experiment (GAME) Implementation Plan. 136 pp.

  • Grell, G., 1993: Prognostic evaluation of assumptions used by cumulus parameterization. Mon. Wea. Rev., 121 , 764787.

  • Heise, E., 1996: An investigation of water and energy budgets for the BALTEX region based on short-range numerical weather predictions. Tellus, 48A , 693707.

    • Search Google Scholar
    • Export Citation
  • Higgins, R. W., Mo K. C. , and Schubert S. D. , 1996: The moisture budget of the central United States in spring as evaluated in the NCEP/NCAR and NASA/DAO reanalyses. Mon. Wea. Rev., 124 , 939963.

    • Crossref
    • Search Google Scholar
    • Export Citation
  • Higgins, R. W., Yao Y. , and Wang X. L. , 1997: Influence of the North American monsoon system on the U.S. summer precipitation regime. J. Climate, 10 , 26002622.

    • Crossref
    • Search Google Scholar
    • Export Citation
  • Hong, S., and Pan H. , 1996: Nonlocal boundary layer vertical diffusion in a medium-range forecast model. Mon. Wea. Rev., 124 , 23222339.

    • Crossref
    • Search Google Scholar
    • Export Citation
  • Hong, S., and Leetma A. , 1999: An evaluation of the NCEP RSM for regional climate modeling. J. Climate, 12 , 592609.

  • Huffman, G. J., and Coauthors. 1997: The Global Precipitation Climatology Project (GPCP) combined precipitation dataset. Bull. Amer. Meteor. Soc., 78 , 520.

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

  • Kanamitsu, M., 1989: Description of the NMC global data assimilation and forecast system. Wea. Forecasting, 4 , 335342.

    • Crossref
    • Search Google Scholar
    • Export Citation
  • Kanamitsu, M., and Saha S. , 1996: Systematic tendency error in budget calculations. Mon. Wea. Rev., 124 , 11451160.

  • Kanamitsu, M., Ebisuzaki W. , Woollen J. S. , Yang S-K. , Hnilo J. J. , Fiorino M. , and Potter G. L. , 2002: NCEP–DOE AMIP II Reanalysis (R-2). Bull. Amer. Meteor. Soc., in press.

    • Search Google Scholar
    • Export Citation
  • Kistler, R., and Coauthors. 2001: The NCEP–NCAR 50-Year Reanalysis: Monthly means CD-ROM documentation. Bull. Amer. Meteor. Soc., 82 , 247267.

    • Crossref
    • Search Google Scholar
    • Export Citation
  • Lawford, R. G., 1999: A midterm report on the GEWEX Continental-Scale International Project. J. Geophys. Res., 104 , 1927919292.

  • Maurer, E., O'Donnell G. , Lettenmaier D. , and Roads J. , 2001a: Comparison of NCEP/NCAR reanalysis, NCEP II AMIP water and energy budgets with macroscale hydrologic model simulations. J. Geophys. Res., 106 , 1784117862.

    • Search Google Scholar
    • Export Citation
  • Maurer, E., . 2001b: Evaluation of NCEP/NCAR reanalysis water and energy budgets using macroscale hydrologic model simulations as a benchmark. Land Surface Hydrology, Meteorology, and Climate: Observations and Modeling, V. Lakshmi, J. Albertson, and J. Schaake, Eds., Water and Application Series, Vol. 3, Amer. Geophys. Union, 246 pp.

    • Search Google Scholar
    • Export Citation
  • Oglesby, R., Marshall S. , Roads J. , and Robertson F. , 2001: Diagnosing warm season precipitation over the GCIP region from models and analyses. J. Geophys. Res., 106 , 33573369.

    • Crossref
    • Search Google Scholar
    • Export Citation
  • Pan, H-L., 1990: A simple parameterization of evapotranspiration over land for the NMC medium-range forecast model. Mon. Wea. Rev., 118 , 25002512.

    • Crossref
    • Search Google Scholar
    • Export Citation
  • Pan, H-L., and Wu W. , 1995: Implementing a mass flux convective parameterization package for the NMC medium-range forecast model. NMC Office Note 409, NCEP/EMC, Camp Springs, MD, 40 pp.

    • Search Google Scholar
    • Export Citation
  • Randel, D. L., Vonder Haar T. H. , Ringerud M. A. , Stephens G. L. , Greenwald T. J. , and Combs C. L. , 1996: A new global water vapor dataset. Bull. Amer. Meteor. Soc., 77 , 12331246.

    • Crossref
    • Search Google Scholar
    • Export Citation
  • Raschke, E., and Coauthors. 1998: The Baltic Sea Experiment BALTEX: A brief overview and some selected results of the authors. Surv. Geophys., 19 , 122.

    • Crossref
    • Search Google Scholar
    • Export Citation
  • Roads, J., and Betts A. , 2000: NCEP–NCAR and ECMWF reanalysis surface water and energy budgets for the Mississippi River basin. J. Hydrometeor., 1 , 8894.

    • Crossref
    • Search Google Scholar
    • Export Citation
  • Roads, J., Chen S-C. , Kao J. , Langley D. , and Glatzmaier G. , 1992: Global aspects of the Los Alamos general circulation model hydrologic cycle. J. Geophys. Res., 97 , 1005110068.

    • Crossref
    • Search Google Scholar
    • Export Citation
  • Roads, J., Guetter A. , and Georgakakos K. , 1994: Large-scale aspects of the United States hydrologic cycle. Bull. Amer. Meteor. Soc., 75 , 15891610.

    • Crossref
    • Search Google Scholar
    • Export Citation
  • Roads, J., Kanamitsu M. , and Juang H. , 1997: GDAS' GCIP energy budgets. J. Atmos. Sci., 54 , 17761794.

  • Roads, J., Kanamitsu M. , and Juang H. , 1998a: Vertical structure of humidity and temperature budget residuals over the Mississippi River basin. J. Geophys. Res., 103 , 37413759.

    • Crossref
    • Search Google Scholar
    • Export Citation
  • Roads, J., Marshall S. , and Oglesby R. , 1998b: Atmospheric moisture cycling rates. GEWEX News, Vol. 8, No. 3, 7–10.

  • Roads, J., . 1999: Surface water characteristics in NCEP global spectral model reanalysis. J. Geophys. Res., 104 , 1930719327.

  • Serreze, M. C., and Hurst C. M. , 2000: Representation of mean Arctic precipitation from NCEP–NCAR and ERA reanalyses. J. Climate, 13 , 182201.

    • Crossref
    • Search Google Scholar
    • Export Citation
  • Stewart, R. E., and Coauthors. 1998: The Mackenzie GEWEX study: The water and energy cycles of a major North American river basin. Bull. Amer. Meteor. Soc., 79 , 26652683.

    • Crossref
    • Search Google Scholar
    • Export Citation
  • Strong, G. S., Proctor B. , Wang M. , Soulis E. D. , Smith C. D. , Seglenieks F. , and Snelgrove K. , 2002: Closing the Mackenzie basin water balance, wateryears 1994–95 through 1996–97. Atmos.–Ocean, in press.

    • Search Google Scholar
    • Export Citation
  • Trenberth, K. E., 1999: Atmospheric moisture recycling: Role of advection and local evaporation. J. Climate, 12 , 13681381.

    • Crossref
    • Search Google Scholar
    • Export Citation
  • Trenberth, K. E., and Guillemot C. J. , 1994: The total mass of the atmosphere. J. Geophys. Res., 99 ((D11),) 2307923088.

  • Troen, I., and Mahrt L. , 1986: A simple model of the atmospheric boundary layer: Sensitivity to surface evaporation. Bound.-Layer Meteor., 37 , 129148.

    • Crossref
    • Search Google Scholar
    • Export Citation
  • Xie, P., and Arkin P. A. , 1997: Analyses of global monthly precipitation using gauge observations, satellite estimates, and numerical model predictions. J. Climate, 9 , 840858.

    • Search Google Scholar
    • Export Citation
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