Climate Dynamics

, Volume 33, Issue 2–3, pp 341–364 | Cite as

The global climatology of an interannually varying air–sea flux data set

  • W. G. LargeEmail author
  • S. G. Yeager


The air–sea fluxes of momentum, heat, freshwater and their components have been computed globally from 1948 at frequencies ranging from 6-hourly to monthly. All fluxes are computed over the 23 years from 1984 to 2006, but radiation prior to 1984 and precipitation before 1979 are given only as climatological mean annual cycles. The input data are based on NCEP reanalysis only for the near surface vector wind, temperature, specific humidity and density, and on a variety of satellite based radiation, sea surface temperature, sea-ice concentration and precipitation products. Some of these data are adjusted to agree in the mean with a variety of more reliable satellite and in situ measurements, that themselves are either too short a duration, or too regional in coverage. The major adjustments are a general increase in wind speed, decrease in humidity and reduction in tropical solar radiation. The climatological global mean air–sea heat and freshwater fluxes (1984–2006) then become 2 W/m2 and −0.1 mg/m2 per second, respectively, down from 30 W/m2 and 3.4 mg/m2 per second for the unaltered data. However, decadal means vary from 7.3 W/m2 (1977–1986) to −0.3 W/m2 (1997–2006). The spatial distributions of climatological fluxes display all the expected features. A comparison of zonally averaged wind stress components across ocean sub-basins reveals large differences between available products due both to winds and to the stress calculation. Regional comparisons of the heat and freshwater fluxes reveal an alarming range among alternatives; typically 40 W/m2 and 10 mg/m2 per second, respectively. The implied ocean heat transports are within the uncertainty of estimates from ocean observations in both the Atlantic and Indo-Pacific basins. They show about 2.4 PW of tropical heating, of which 80% is transported to the north, mostly in the Atlantic. There is similar good agreement in freshwater transport at many latitudes in both basins, but neither in the South Atlantic, nor at 35°N.


Heat Flux Latent Heat Flux Global Precipitation Climatology Project Freshwater Flux Western Boundary Current 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.



This work was supported by NOAA grant no. NA06GP0428 and by the National Science Foundation through its sponsorship of the National Center for Atmospheric Research. It could not have proceeded without the heroic efforts of all the individuals responsible for producing the individual data sets we have utilized. In particular we thank Y. Zhang and W. Rossow for early access to the ISCCP-FD products.


  1. Baumgartner A, Reichel E (1975) The world water balance. Elsevier, New York, 180 ppGoogle Scholar
  2. Beranger K, Viau K, Barnier B, Garnier E, Molines JM, Siefridt L (1999) An atlas of climatic estimates of air–sea fluxes, 19 pp plus figuresGoogle Scholar
  3. Biastoch A, Boning C, Getzlaff J, Molines J-M, Madec G (2008) Causes of interannual-decadal variability in the meridional overturning circulation of the mid-latitude North Atlantic Ocean. J Clim (in press)Google Scholar
  4. Bourassa M, Vincent D, Wood W (1999) A flux parameterization including the effects of capillary waves and sea state. J Atmos 56:1123–1139CrossRefGoogle Scholar
  5. Bryden H, Imawaki S (2001) Ocean heat transport. In: Siedler G, Church J, Gould J (eds) Ocean circulation and climate. International Geophysics Series, vol 77. Academic Press, New Yoek, pp 317–336Google Scholar
  6. Cayan D (1992a) Latent and sensible heat flux anomalies over the northern oceans: driving the sea surface temperature. J Phys Oceanogr 22:859–881CrossRefGoogle Scholar
  7. Cayan D (1992b) Latent and sensible heat flux anomalies over the northern oceans: the connection to monthly atmospheric circulation. J Clim 5:354–369CrossRefGoogle Scholar
  8. Chin T, Milliff R, Large W (1998) Basin-scale high-wavenumber sea surface wind fields from multiresolution analysis of scatterometer data. J Atmos Oceanic Technol 15:741–763CrossRefGoogle Scholar
  9. Comiso J (1999) Bootstrap sea ice concentrations for NIMBUS-7 SMMR and DMSP SSM/I, Digital Media, National Snow and Ice Data CenterGoogle Scholar
  10. Curry R, Mauritzen C (2005) Dilution of the northern North Atlantic Ocean in recent decades. Science 308:1772–1774CrossRefGoogle Scholar
  11. Dai A, Trenberth K (2002) Estimates of freshwater discharge from continents: latitudinal and seasonal variations. J Hydrometeorol 3:660–687CrossRefGoogle Scholar
  12. DaSilva A, Young C, Levitus S (1994) Atlas of surface marine data 1994. NOAA Atlas NESDIS 6 (6 vols). U.S. Department of Commerce, NODC, User services branch, NOAA/NESDIS/ E/OC21Google Scholar
  13. Donelan M, Haus, B, Reul N, Plant W, Stiassnie M, Graber H, Brown O, Saltzman E (2004) On the limiting aerodynamic roughness of the ocean in very strong winds. Geophys Res Lett 31. doi: 10.1029/2004GL019460
  14. Ebuchi N, Graber H, Caruso M (2002) Evaluation of wind vectors observed by QuikSCAT/seawinds using ocean buoy data. J Atmos Oceanic Technol 19:2049–2062CrossRefGoogle Scholar
  15. Fairall C, Bradley E, Rogers D, Edson J, Young G (1996) Bulk parameterization of air–sea fluxes for tropical ocean-global atmosphere coupled-ocean atmosphere response experiment. J Geophys Res 101:3747–3764CrossRefGoogle Scholar
  16. Fairall C, Bradley E, Hare J, Grachev A, Edson J (2003) Bulk parameterization of air–sea fluxes: updates and verification for the CORE algorithm. J Clim 16:571–591CrossRefGoogle Scholar
  17. Fasullo J, Trenberth K (2008) The annual cycle of the energy budget: Meridional structures and transports. J Clim 21:2313–2325CrossRefGoogle Scholar
  18. Fekete B, Vorosmarty C, Grabs W (1999) An improved spatially distributed runoff data set based on observed river discharge and simulated water balance. Technical Report 22, Global Runoff Data Cent, 108 ppGoogle Scholar
  19. Folland C, Karl T, Christy J, Clarke R, Gruza G, Jouzel J, Mann M, Oerlemans J, Salinger M, Wang S-W (2001) Observed climate variability and change. In: Houghton JT et al (eds) Climate change 2001: the scientific basis. intergovernmental panel on climate change. Contribution of Working Group I to the third assessment report, pp 99–181Google Scholar
  20. Freilich M, Vanhoff B (2006) QuikSCAT vector wind accuracy through comparisons with National Data Buoy Center measurements. IEEE Trans Geosci Rem Sens 44:622–637. doi: 10.1109/TGRS.2006.869928 CrossRefGoogle Scholar
  21. French J, Drennan W, Zhang J, Black P (2007) Turbulent fluxes in the hurricane boundary layer. Part I: Momentum flux. J Atmos 64:1089–1102. doi: 10.1175/JAS3887.1 CrossRefGoogle Scholar
  22. Gates W (1992) AMIP: the atmospheric model intercomparison project. Bull Am Meteor Soc 73:1962–1970CrossRefGoogle Scholar
  23. Gent P (1991) The heat budget of the TOGA-COARE domain in an ocean model. J Geophys Res 96:3323–3330Google Scholar
  24. Gibson J, Kallberg P, Uppala S, Hernandez A, Nomura A, Serrano E (1997) ECMWF re-analysis project, 1. ERA description, Project report series, ECMWFGoogle Scholar
  25. Griffies S, Biastoch A, Boning C, Bryan F, Danabasoglu G, Chassignet E, England M, Gerdes R, Haak H, Hallberg R, Hazeleger W, Jungclaus J, Large W, Madex G, Samuels B, Scheinert M, Severijns C, Simmons H, Treguier A, Winton M, Yeager S, Yin J (2008) Coordinated ocean-ice reference experiments (COREs). Ocean Modell 11:59–74Google Scholar
  26. Grist J, Josey S (2003) Inverse analysis adjustments of the SOC air–sea flux climatology using ocean heat transport constraints. J Clim 16:3274–3295CrossRefGoogle Scholar
  27. Hansen D, Poulain P-M (1996) Quality control and interpolations of WOCE-TOGA drifter data. J Atmos Oceanic Technol 13:900–909CrossRefGoogle Scholar
  28. Hellerman S, Rosenstein M (1983) Normal monthly wind stress over the World Ocean with error estimates. J Phys Oceanogr 13:1093–1104CrossRefGoogle Scholar
  29. Huffman G, Adler R, Arkin P, Chang A, Ferraro R, Gruber R, Janowiak J, McNab A, Rudolf B, Schneider U (1997) The global precipitation climatology project (GPCP) combined precipitation data set. Bull Am Meteor Soc 78:5–20CrossRefGoogle Scholar
  30. Hunke EC, Holland M (2007) Late winter generation of spiciness on subducted isopycnals. J Geophys Res 112:C04s14. doi: 10.1029/2009/2006JC003640
  31. Hurrell J, Hack J, Shea D, Caron J, Rosinski J (2008) A new sea surface temperature and sea ice boundary data set for the community atmosphere model. J Clim (in press)Google Scholar
  32. IPCC (2007) Climate change 2007: the physical science basis. Contribution of Working Group I to the fourth assessment report of the intergovernmental panel on climate change. In: Solomon S, Qin D, Manning M, Chen Z, Marquis M, Averyt K, Tignor M, Miller H (eds) Ocean circulation and climate. Cambridge University Press/Academic Press, London, p. 996Google Scholar
  33. Isemer H-J, Willebrand J, Hasse L (1989) Fine adjustment of large scale air–sea energy flux parameterizations by direct estimates of ocean heat transport. J Clim 2:1173–1184CrossRefGoogle Scholar
  34. Jiang C, Cronin M, Kelly K, Thompson L (2005) Evaluation of a hybrid satellite and NWP based turbulent heat flux product using tropical atmosphere ocean (TAO) buoys. J Geophys Res 110. doi: 10.1029/2004JC002824
  35. Josey S, Kent E Taylor P (2002) Wind stress forcing of the ocean in the SOC climatology: comparisons with the NCEP-NCAR, ECMWF, UWM/COADS, and Hellerman and Rosenstein datasets. J Phys Oceanogr 32:1993–2019CrossRefGoogle Scholar
  36. Josey S, Kent E, Taylor P (1998) The Southampton Oceanography Centre (SOC) Ocean-Atmosphere Heat, Momentum and Freshwater flux Atlas. Technical report, Southampton Oceanography Centre Report No. 6 30ppGoogle Scholar
  37. Josey S, Kent E, Taylor P (1999) New insights into the ocean heat budget closure problem from analysis of the SOC air–sea flux climatology. J Clim 12:2856–2868CrossRefGoogle Scholar
  38. Josey S, Kent E, Sinha B (2001) Can a state of the art atmospheric general circulation model reproduce recent NAO related variability at the air–sea interface?, Geophys Res Lett 28:4543–4546CrossRefGoogle Scholar
  39. Jost V, Bakan S, Fennig K (2002) HOAPS—a new satellite-derived freshwater flux climatology. Meteorol Zeitschrift 11:61–70CrossRefGoogle Scholar
  40. Kalnay E, Kanamitsu M, Kistler R, Collins W, Deaven D, Gandin L, Iredell M, Saha S, White G, Woollen J, Zhu Y, Chelliah M, Ebisuzaki W, Higgins W, Janowiak J, Mo K, Ropelewski C, Leetmaa A, Reynolds R, Jenne R (1996) The NCEP/NCAR 40-year reanalysis project. Bull Am Meteor Soc 77:437–471CrossRefGoogle Scholar
  41. Kubota M, Iwasaka N, Kizu S, Konda M, Kutsuwada K (2002) Japanese ocean flux data sets with use of remote sensing observations (J-OFURO). J Oceanogr 58:213–225CrossRefGoogle Scholar
  42. Large W (2006) Surface fluxes for practioners of global ocean data assimilattion. In: Chassignet E, Verron J (eds) Ocean weather and forecasting. Springer, Heidelberg, pp 229–270Google Scholar
  43. Large W, Danabasoglu G (2006) Attribution and impacts of upper-ocean biases in CCSM3. J Clim 18:2325–2346Google Scholar
  44. Large W, Nurser A (2001) Ocean surface water mass transformation. In: Siedler G, Church J, Gould J (eds) Ocean circulation and climate. International Geophysics Series, vol 77. Academic Press, New York, pp 317–336Google Scholar
  45. Large W, Pond S (1981) Open ocean momentum flux measurements in moderate to strong winds. J Phys Oceanogr 11:324–336CrossRefGoogle Scholar
  46. Large W, Pond S (1982) Sensible and latent heat flux measurements over the ocean. J Phys Oceanogr 12:464–482CrossRefGoogle Scholar
  47. Large W, Yeager S (2004) Diurnal to decadal global forcing for ocean and seaice models: the data sets and climatologies. Technical Report TN-460+STR, NCAR, 105 ppGoogle Scholar
  48. Large WG, Danabasoglu G, Doney SC, McWilliams JC (1997) Sensitivity to surface forcing and boundary layer mixing in a global ocean model: annual-mean climatology. J Phys Oceanogr 27:2418–2447CrossRefGoogle Scholar
  49. Levitus S, Antonov JI, Boyer TP, Stephens C (2000) Warming of the world ocean. Science 287:2225–2229CrossRefGoogle Scholar
  50. Lind R, Katsaros K (1986) Radiation measurements and model results from R/V Oceanographer during STREX 1980. J Geophys Res 91:13308–13314CrossRefGoogle Scholar
  51. MacDonald A, Wunsch C (1998) An estimate of global ocean circulation and heat fluxes. Nature 382:436–439CrossRefGoogle Scholar
  52. McPhaden M, Busalacchi A, Cheney R, Donguy J-R, Gage K, Halpern D, Ji M, Meyers PJG, Mitchum G, Niiler P, Picaut J, Reynolds R, Smith N, Takeuchi K (1998) The tropical ocean-global atmosphere observing system: a decade of progress. J Geophys Res 103:14169–14240CrossRefGoogle Scholar
  53. Naderi F, Freilich M, Long D (1991) Spaceborne radar measurements of wind vleocity over the ocean: an overview of the NSCAT scatterometer system. Proc IEEE 79:850–866CrossRefGoogle Scholar
  54. Payne R (1972) Albedo of the sea surface. J Atmos 29:959–970CrossRefGoogle Scholar
  55. Powell M, Vickery P, Reinhold T (2003) Reduced drag coefficients for high wind speeds is tropical cyclones. Nature 422:279–283CrossRefGoogle Scholar
  56. Rayner N, Parker D, Horton E, Folland C, Alexander L, Powell D (2003) Global analyses of SST, sea ice and night marine air temperature since the late nineteenth century. J Geophys Res 108. doi: 10.1029/2002JD002670
  57. Reynolds R, Rayner N, Smith T, Stokes D, Wang W (2002) An improved in situ and satellite SST analysis for climate. J Clim 15:1609–1625CrossRefGoogle Scholar
  58. Rigor I, Colony R, Martin S (2000) Variations in surface air temperature observations in the Arctic, 1979–1997. J Clim 13:896–914CrossRefGoogle Scholar
  59. Roske F (2006) A global heat and freshwater forcing data set for ocean models. Ocean Modell 11:235–297CrossRefGoogle Scholar
  60. Schacher G, Davidson K, Houlihan T, Fairall C (1981) Measurements of the rate of dissipation of turbulent kinetic energy over the ocean. Boundary Layer Meteorol 20:321–330CrossRefGoogle Scholar
  61. Serreze M, Hurst C (2000) Representation of mean Arctic precipitation from NCEP-NCAR and ERA reanalyses. J Clim 13:182–201CrossRefGoogle Scholar
  62. Servain J, Busalacchi A, McPhaden M, Moura A-D, Reverdin G, Vianna M, Zebiak S (1998) A pilot research moored array in the tropical Atlantic (PIRATA). Bull Am Meteor Soc 79:2019–2031CrossRefGoogle Scholar
  63. Smith S (1988) Coefficients for sea surface wind stress, heat flux, and wind profiles as functions of wind speed and temperature. J Geophys Res 93:15467–15472CrossRefGoogle Scholar
  64. Smith SR, Legler DM, Verzone KV (2001) Quantifying uncertainties in NCEP reanalyses using high-quality research vessel observations. J Clim 14:4062–4072CrossRefGoogle Scholar
  65. Spencer RW (1993) Global oceanic precipitation from the MSU during 1979–91 and comparisons to other climatologies. J Clim 6:1301–1326CrossRefGoogle Scholar
  66. Stammer D, Wunsch C, Giering R, Ekert C, Heimbach P, Marotzke J, Adcroft A, Hill C, Marshall J (2002) The global ocean circulation during 1992–1997, estimated from ocean observations and a general circulation model. J Geophys Res 107:3118. doi: 10.1029/2001JC000888 Google Scholar
  67. Stammer D, Ueyoshi K, Large W, Josey S, Wunsch C (2004) Estimating air–sea fluxes of heat, freshwater and momentum through global ocean data assimilation. J Geophys Res 109. doi: 10.1029/2003JC002082
  68. Taylor (ed.), P. 2000 Final report of the joint WCRP/SCOR Working Group on air–sea fluxes: intercomparison and validation of ocean–atmosphere energy flux fields, WCRP-112, WMO/TD-No.1036, World Climate Research Programme, 303 ppGoogle Scholar
  69. Trenberth K, Caron J (2001) Estimates of meridional atmosphere and ocean heat transports. J Clim 14:3433–3443CrossRefGoogle Scholar
  70. Uppala S, co authors (2005) The ERA-40 re-analysis. Q J Roy Meteor Soc 131:2961–3012. doi: 101256/qj.04.176
  71. Visbeck M, Chassignet E, Curry R, Delworth T (2003) The ocean’s response to North Atlantic variability. The North Atlantic oscillation, In: Hurrell J, Kushnir Y, Ottersen G, Visbeck M (eds) Geophysical monograph, vol 134. American Geophysical Union, pp 113–145Google Scholar
  72. Wang W, McPhaden MJ (2001) What is the mean seasonal cycle of surface heat flux in the equatorial Pacific?, J Geophys Res 106:837–857CrossRefGoogle Scholar
  73. Wentz F, Ricciardulli L, Mears C (2007) How much more rain will global warming bring?. Science 317:233–235CrossRefGoogle Scholar
  74. Wijffels S (2001) Ocean transport of freshwater, ocean circulation and climate. In: Siedler G, Church J, Gould J (eds) International geophysics series, vol 77. Academic Press, New York, pp 475–488Google Scholar
  75. Wittenburg A, Rossati A, Lau N, Ploshay J (2006) GFDL’s CM2 global coupled climate models. Part III: Tropical Pacific climate and ENSO. J Clim 19:698–722CrossRefGoogle Scholar
  76. Xie P, Arkin PA (1996) analyses of global monthly precipitation using gauge observations, satellite estimates, and numerical model predictions. J Clim 9:840–858CrossRefGoogle Scholar
  77. Yang D (1999) An improved precipitation climatology for the Arctic Ocean. Geophys Res Lett 26:1625–1628CrossRefGoogle Scholar
  78. Yeager S, Large W (2004) Late winter generation of spiciness on subducted isopycnals. J Phys Oceanogr 34:1528–1547CrossRefGoogle Scholar
  79. Yeager S, Large W, Hack J, Shields C (2005) The low resolution CCSM3. J Clim 18:2545–2566Google Scholar
  80. Yu L, Weller R (2007) Objectively analyzed air–sea heat fluxes for the global ice-free oceans (1981–2005). Bull Am Meteor Soc 88. doi: 10.1175/BAMS-88-4-527
  81. Yu L, Weller R, Sun B (2004) Improving latent and sensible heat flux estimates for the Atlantic Ocean (1988–1999) by a synthesis approach. J Clim 17:373–393CrossRefGoogle Scholar
  82. Zhang Y, Rossow W, Lacis A, Oinas V, Mishchenko M (2004) Calculation of radiative flux profiles from the surface to top-of-atmosphere based on ISCCP and other global data sets: refinements of the radiative transfer model and input data. J Geophys Res 109. doi: 10.1029/2003JD004457

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© Springer-Verlag 2008

Authors and Affiliations

  1. 1.National Center for Atmospheric ResearchBoulderUSA

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