New Insights into the Ocean Heat Budget Closure Problem from Analysis of the SOC Air–Sea Flux Climatology

Abstract Results from an analysis of the Southampton Oceanography Centre (SOC) global air–sea heat flux climatology, which has been calculated using in situ weather reports from voluntary observing ships covering the period 1980–93, are presented. Systematic errors in the fluxes arising from differences in observing procedure have been quantified and corrected; the magnitude of these errors is up to 15 W m−2 with strong seasonal and regional variations. Despite these corrections, closure of the ocean heat budget is not obtained as the global mean net heat flux is an oceanic gain of 30 W m−2. The validity of closing the heat budget by global scaling of the flux components is assessed by comparison of the SOC flux fields with Woods Hole Oceanographic Institute research buoy measurements. The level of agreement between the two is found to vary from one site to another. Thus, closure of the ocean heat budget requires regional adjustments to the flux components in order to avoid significant biases in the adjus...

[1]  R. Schmitt.  The ocean component of the global water cycle (95RG00184) , 1995 .

[2]  R. Payne,et al.  Albedo of the Sea Surface , 1972 .

[3]  S. P. Anderson,et al.  Surface meteorology and air-sea fluxes in the western equatorial Pacific warm pool during the TOGA c , 1996 .

[4]  D. Roemmich,et al.  Large scale circulation of the North Pacific Ocean , 1989 .

[5]  Josef M. Oberhuber,et al.  An Atlas Based on the COADS Data Set: the Budgets of Heat Buoyancy and Turbulent Kinetic Energy at t , 1988 .

[6]  John C. Kindle,et al.  Atmospheric forcing in the Arabian Sea during 1994–1995: observations and comparisons with climatology and models , 1998 .

[7]  B. Weare,et al.  Uncertainties in Global Ocean Surface Heat Flux Climatologies Derived from Ship Observations , 1995 .

[8]  Harry L. Bryden,et al.  Ocean heat transport across 24゜ N in the Pacific , 1991 .

[9]  James C. McWilliams,et al.  Sensitivity to Surface Forcing and Boundary Layer Mixing in a Global Ocean Model: Annual-Mean Climatology , 1997 .

[10]  Carl Wunsch,et al.  An estimate of global ocean circulation and heat fluxes , 1996, Nature.

[11]  R. Weller,et al.  Meteorological variability and air‐sea fluxes at a closely spaced array of surface moorings , 1995 .

[12]  Stuart D. Smith.  Wind Stress and Heat Flux over the Ocean in Gale Force Winds , 1980 .

[13]  C. Dorman,et al.  A temperature correction for Tucker's ocean rainfall estimates , 1978 .

[14]  K. Trenberth,et al.  The global heat balance: heat transports in the atmosphere and ocean , 1994 .

[15]  Noboru Nakamura,et al.  Atmospheric heat budgets of the polar regions , 1988 .

[16]  G. Parrilla,et al.  Rising temperatures in the subtropical North Atlantic Ocean over the past 35 years , 1994, Nature.

[17]  J. Willebrand,et al.  Fine Adjustment of Large Scale Air-Sea Energy Flux Parameterizations by Direct Estimates of Ocean Heat Transport , 1989 .

[18]  S. Bacon.  Circulation and Fluxes in the North Atlantic between Greenland and Ireland , 1997 .

[19]  J. Peixoto,et al.  Physics of climate , 1992 .

[20]  Elizabeth C. Kent,et al.  Seasonal variations between sampling and classical mean turbulent heat flux estimates in the eastern North Atlantic , 1995 .

[21]  Elizabeth C. Kent,et al.  The Accuracy of ship's meteorological observations: results of the VSOP-NA , 1991 .

[22]  Francesco Bignami,et al.  Longwave radiation budget in the Mediterranean Sea , 1995 .

[23]  L. Hasse,et al.  Local Sea Surface Wind, Wind Stress, and Sensible and Latent Heat Fluxes , 1997 .

[24]  Elizabeth C. Kent,et al.  The Southampton Oceanography Centre (SOC) Ocean - Atmosphere, Heat, Momentum and Freshwater Flux Atlas , 1998 .

[25]  Chris Garrett,et al.  Heat flux parameterizations for the Mediterranean sea : the role of atmospheric aerosols and constraints from the water budget , 1994 .

[26]  C. Gautier,et al.  Comparison between global latent heat flux computed from multisensor (SSM/I and AVHRR) and from in situ data , 1995 .

[27]  Y. Kaufman,et al.  Passive remote sensing of tropospheric aerosol and atmospheric , 1997 .

[28]  R. Lindau.  A New Beaufort Equivalent Scale , 1999 .

[29]  F. Dobson,et al.  Bulk models of solar radiation at sea , 1988 .

[30]  R. Weller,et al.  Observations of Surface Forcing from the Subduction Experiment: A Comparison with Global Model Products and Climatological Datasets* , 1997 .

[31]  Richard W. Reynolds,et al.  Estimating monthly-averaged air-sea transfers of heat and momentum using the bulk aerodynamic method , 1981 .

[32]  S. Josey,et al.  On estimating the atmospheric longwave flux at the ocean surface from ship meteorological reports , 1997 .

[33]  P. M. Saunders,et al.  Oceanic Fluxes on the WOCE A11 Section , 1995 .

[34]  D. E. Harrison.  On Climatological Monthly Mean Wind Stress and Wind Stress Curl Fields over the World Ocean , 1989 .

[35]  R. Mobley,et al.  Monthly Average SeaSurface Temperatures and IcePack Limits on a 1 Global Grid , 1976 .

[36]  Andrew F. Bunker,et al.  Computations of Surface Energy Flux and Annual Air–Sea Interaction Cycles of the North Atlantic Ocean , 1976 .

[37]  R. Atlas,et al.  Air‐sea fluxes retrieved from special sensor microwave imager data , 1997 .

[38]  E. F. Bradley,et al.  Bulk parameterization of air‐sea fluxes for Tropical Ocean‐Global Atmosphere Coupled‐Ocean Atmosphere Response Experiment , 1996 .

[39]  T. Müller,et al.  A transatlantic section at 14.5N: Meridional volume and heat fluxes , 1995 .

[40]  Peter Schlüssel,et al.  Evaluation of Satellite-Derived Latent Heat Fluxes , 1997 .

[41]  W. Johns,et al.  Meridional Heat Transport Variability at 26.5°N in the North Atlantic , 1997 .

[42]  Elizabeth C. Kent,et al.  A Statistical Determination of the Random Observational Errors Present in Voluntary Observing Ships Meteorological Reports , 1999 .

[43]  R. Reed,et al.  On Estimating Insolation over the Ocean , 1977 .

[44]  Bengamin I. Moat,et al.  Wind Stress Measurements from the Open Ocean Corrected for Airflow Distortion by the Ship , 1998 .

[45]  Elizabeth C. Kent,et al.  Correction of Marine Air Temperature Observations for Solar Radiation Effects , 1993 .

[46]  Harry L. Bryden,et al.  Direct estimates and mechanisms of ocean heat transport , 1982 .