Wave- and Anemometer-Based Sea Surface Wind (WASWind) for Climate Change Analysis*

Abstract Ship-based measurements of sea surface wind speed display a spurious upward trend due to increases in anemometer height. To correct this bias, the authors constructed a new sea surface wind dataset from ship observations of wind speed and wind wave height archived in the International Comprehensive Ocean–Atmosphere Data Set (ICOADS). The Wave- and Anemometer-based Sea surface Wind (WASWind) dataset is available for wind velocity and scalar speed at monthly resolution on a 4° × 4° longitude–latitude grid from 1950 to 2008. It substantially reduces the upward trend in wind speed through height correction for anemometer-measured winds, rejection of spurious Beaufort winds, and use of estimated winds from wind wave height. The reduced global upward trend is smallest among the existing global datasets of in situ observations and comparable with those of reanalysis products. Despite the significant reduction of globally averaged wind speed trend, WASWind features rich spatial structures in trend patter...

[1]  L. Hasse,et al.  Did the Beaufort Scale or the Wind Climate Change , 1987 .

[2]  S. Xie,et al.  A coupled ocean‐atmosphere model of relevance to the ITCZ in the eastern Pacific , 1994 .

[3]  J. Wallace,et al.  On the structure and evolution of ENSO‐related climate variability in the tropical Pacific: Lessons from TOGA , 1998 .

[4]  A. Timmermann,et al.  Wind Effects on Past and Future Regional Sea Level Trends in the Southern Indo-Pacific* , 2010 .

[5]  L. Hasse,et al.  The Scientific Beaufort Equivalent Scale: Effects on Wind Statistics and Climatological Air-Sea Flux Estimates in the North Atlantic Ocean , 1991 .

[6]  Peter J. Webster,et al.  Coupled ocean–atmosphere dynamics in the Indian Ocean during 1997–98 , 1999, Nature.

[7]  A. Barnston,et al.  Classification, seasonality and persistence of low-frequency atmospheric circulation patterns , 1987 .

[8]  Youichi Tanimoto,et al.  SST-Induced Surface Wind Variations over the Brazil-Malvinas Confluence : Satellite and In Situ Observations , 2005 .

[9]  David I. Berry,et al.  Trends in ship wind speeds adjusted for observation method and height , 2008 .

[10]  Anthony F. Molland,et al.  Quantifying the Airflow Distortion over Merchant Ships. Part I: Validation of a , 2006 .

[11]  Clara Deser,et al.  Surface Climate Variations over the North Atlantic Ocean during Winter: 1900–1989 , 1993 .

[12]  Sergey K. Gulev,et al.  Last century changes in ocean wind wave height from global visual wave data , 2004 .

[13]  B. Hoskins,et al.  Near-Surface Wind over the Global Ocean 1949–1988 , 1996 .

[14]  Andrew F. Bunker,et al.  Trends of Variables and Energy Fluxes over the Atlantic Ocean from 1948 to 19721 , 1980 .

[15]  Steven J. Worley,et al.  ICOADS release 2.1 data and products , 2005 .

[16]  R. Wu,et al.  On Equatorial Pacific Surface Wind Changes around 1977: NCEP–NCAR Reanalysis versus COADS Observations* , 2003 .

[17]  J. Hurrell.  Decadal Trends in the North Atlantic Oscillation: Regional Temperatures and Precipitation , 1995, Science.

[18]  T. Blanc.  The Effect of Inaccuracies in Weather-Ship Data on Bulk-Derived Estimates of Flux, Stability and Sea-Surface Roughness , 1986 .

[19]  S. Kobayashi,et al.  The JRA-25 Reanalysis , 2007 .

[20]  B. Goswami,et al.  A dipole mode in the tropical Indian Ocean , 1999, Nature.

[21]  Yan Du,et al.  Role of atmospheric adjustments in the tropical Indian Ocean warming during the 20th century in climate models , 2008 .

[22]  G. Vecchi,et al.  Weakening of tropical Pacific atmospheric circulation due to anthropogenic forcing , 2006, Nature.

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

[24]  F. Wentz,et al.  How Much More Rain Will Global Warming Bring? , 2007, Science.

[25]  Yan Du,et al.  Decadal Shift in El Niño Influences on Indo–Western Pacific and East Asian Climate in the 1970s* , 2010 .

[26]  W. Timothy Liu,et al.  Ocean–Atmosphere Interaction over Agulhas Extension Meanders , 2007 .

[27]  A. J. Clarke,et al.  Long-Term Changes in the Equatorial Pacific Trade Winds , 1996 .

[28]  C. S. Ramage.  Secular Change in Reported Surface Wind Speeds over the Ocean , 1987 .

[29]  Elizabeth C. Kent,et al.  Choice of a Beaufort Equivalent Scale , 1997 .

[30]  Elizabeth C. Kent,et al.  ICOADS Release 2.5: extensions and enhancements to the surface marine meteorological archive , 2011 .

[31]  R. Reynolds,et al.  The NCEP/NCAR 40-Year Reanalysis Project , 1996, Renewable Energy.

[32]  Stephen E. Zebiak.  Air–Sea Interaction in the Equatorial Atlantic Region , 1993 .

[33]  Anthony F. Molland,et al.  Quantifying the Airflow Distortion over Merchant Ships. Part II: Application of the Model Results , 2006 .

[34]  V. J. Cardone,et al.  On Trends in Historical Marine Wind Data , 1990 .

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

[36]  C. Deser,et al.  Global warming pattern formation: sea surface temperature and rainfall. , 2010 .

[37]  S. Xie,et al.  Muted precipitation increase in global warming simulations: A surface evaporation perspective , 2008 .

[38]  G. Meehl,et al.  Patterns of Indian Ocean sea-level change in a warming climate , 2010 .

[39]  David I. Berry,et al.  Air–Sea fluxes from ICOADS: the construction of a new gridded dataset with uncertainty estimates , 2011 .

[40]  Elizabeth C. Kent,et al.  Methods to homogenize wind speeds from ships and buoys , 2005 .

[41]  S. Gulev,et al.  Variability of the winter wind waves and swell in the North Atlantic and North Pacific as revealed by the voluntary observing ship data , 2006 .

[42]  M. Kanamitsu,et al.  NCEP–DOE AMIP-II Reanalysis (R-2) , 2002 .

[43]  F. Wentz.  A well‐calibrated ocean algorithm for special sensor microwave / imager , 1997 .

[44]  Elizabeth C. Kent,et al.  A NEW AIR―SEA INTERACTION GRIDDED DATASET FROM ICOADS WITH UNCERTAINTY ESTIMATES , 2009 .

[45]  G. Vecchi,et al.  Indian Ocean Dipole Response to Global Warming: Analysis of Ocean–Atmospheric Feedbacks in a Coupled Model* , 2009 .

[46]  C. V. Naidu,et al.  Is summer monsoon rainfall decreasing over India in the global warming era , 2009 .

[47]  J. Elsner,et al.  The increasing intensity of the strongest tropical cyclones , 2008, Nature.

[48]  Ralph J. Slutz,et al.  A Comprehensive Ocean-Atmosphere Data Set , 1987 .

[49]  Adam S. Phillips,et al.  Simulation of the 1976/77 Climate Transition over the North Pacific: Sensitivity to Tropical Forcing , 2006 .

[50]  David W. Pierce,et al.  The role of ocean dynamics in producing decadal climate variability in the North Pacific , 2001 .

[51]  Elizabeth C. Kent,et al.  Metadata from WMO Publication No. 47 and an Assessment of Voluntary Observing Ship Observation Heights in ICOADS , 2007 .

[52]  J. Hurrell,et al.  DECADAL VARIATIONS IN CLIMATE ASSOCIATED WITH THE NORTH ATLANTIC OSCILLATION , 1997 .

[53]  Wu Bingyi.  Weakening of Indian summer monsoon in recent decades , 2005 .

[54]  J. Norris.  Low Cloud Type over the Ocean from Surface Observations. Part II: Geographical and Seasonal Variations , 1998 .

[55]  Examination of the strengthening of wintertime mid-latitude westerlies over the North Pacific in the 1970s , 1996 .

[56]  Thomas M. Smith,et al.  Extended Reconstruction of Global Sea Surface Temperatures Based on COADS Data (1854–1997) , 2003 .

[57]  A. Sterl,et al.  The ERA‐40 re‐analysis , 2005 .

[58]  L. Trenary,et al.  Causes of decadal subsurface cooling in the tropical Indian Ocean during 1961–2000 , 2008 .

[59]  G. Bigg,et al.  Long-term changes in the tropical Pacific surface wind field , 1987, Nature.

[60]  Tom M. L. Wigley,et al.  A Bivariate Time Series Approach to Anthropogenic Trend Detection in Hemispheric Mean Temperatures , 2003 .

[61]  C. Deser,et al.  Pacific Interdecadal Climate Variability: Linkages between the Tropics and the North Pacific during Boreal Winter since 1900 , 2004 .

[62]  J. Wallace,et al.  A Pacific Interdecadal Climate Oscillation with Impacts on Salmon Production , 1997 .

[63]  C. Deser,et al.  Atmospheric Circulation Trends, 1950–2000: The Relative Roles of Sea Surface Temperature Forcing and Direct Atmospheric Radiative Forcing , 2009 .

[64]  J. Norris,et al.  Low Cloud Type over the Ocean from Surface Observations. Part I: Relationship to Surface Meteorology and the Vertical Distribution of Temperature and Moisture , 1998 .

[65]  Stuart D. Smith.  Coefficients for sea surface wind stress, heat flux, and wind profiles as a function of wind speed and temperature , 1988 .

[66]  T. Yamagata,et al.  Decadal Climate Variability in the North Pacific during the Recent Decades , 1997 .

[67]  Kimio Hanawa,et al.  Characteristic Variations of Sea Surface Temperature with Multiple Time Scales in the North Pacific. , 1993 .

[68]  Lutz Hasse,et al.  Changes of wind waves in the North Atlantic over the last 30 years , 1999 .

[69]  E. F. Bradley,et al.  Bulk Parameterization of Air–Sea Fluxes: Updates and Verification for the COARE Algorithm , 2003 .

[70]  Hiroshi Ichikawa,et al.  Ocean Frontal Effects on the Vertical Development of Clouds over the Western North Pacific: In Situ and Satellite Observations* , 2009 .