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Intercomparison of wind and wave data from the ECMWF Reanalysis Interim and the NCEP Climate Forecast System Reanalysis

Journal Article · · Ocean Modelling
 [1];  [2]
  1. Univ. of Hawaii at Manoa, Honolulu, HI (United States); University of Hawaii
  2. Univ. of Hawaii at Manoa, Honolulu, HI (United States)
The recent release of the ECMWF Reanalysis Interim (ERA-I) and NCEP Climate Forecast System Reanalysis (CFSR) allows for studies of global climate and its cycles with unprecedented detail. While the developers have performed verification and validation, there is little information on their relative performance in particular related to their use in ocean modeling. This study focuses on the intercomparison of wind and wave reanalysis datasets from ERA-I and CFSR utilizing the same set of altimetry and buoy observations and error metrics to assess their consistency in time and space. Both products have good spatial homogeneity with consistent levels of errors in the Northern and Southern Hemispheres. ERA-I proves to be homogenous through time, while CFSR exhibits an abrupt decrease in the level of errors in the Southern Ocean beginning 1994. ERA-I generally underestimates the wind speed and wave height with lower standard deviations in comparison to observations, but maintains slightly better error metrics. Despite having a slightly positive bias, CFSR provides a better description of the variability of the observations and improved performance in the upper percentiles associated with extreme events. Altogether ERA-I has better homogeneity through time deeming it more reliable for modeling of long-term processes; however caution must be applied with analysis of the upper percentiles.
Research Organization:
Univ. of Hawaii at Manoa, Honolulu, HI (United States)
Sponsoring Organization:
NOAA; USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Water Power Technologies Office
Grant/Contract Number:
FG36-08GO18180
OSTI ID:
1769047
Journal Information:
Ocean Modelling, Journal Name: Ocean Modelling Vol. 75; ISSN 1463-5003
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

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On linking atmospheric circulation patterns to extreme wave events for coastal vulnerability assessments journal June 2015
Sea State Trends and Variability: Consistency Between Models, Altimeters, Buoys, and Seismic Data (1979–2016) journal June 2019
Comparisons of Ocean Radiative Transfer Models With SMAP and AMSR2 Observations journal November 2019
Under-estimated wave contribution to coastal sea-level rise journal February 2018
Robustness and uncertainties in global multivariate wind-wave climate projections journal August 2019
Comparison and assessment of three wave hindcasts in the North Atlantic Ocean journal January 2016
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Observing Sea States journal April 2019
North Sea Wave Database (NSWD) and the Need for Reliable Resource Data: A 38 Year Database for Metocean and Wave Energy Assessments journal September 2019
Seasonal Variability of Wind Sea and Swell Waves Climate along the Canary Current: The Local Wind Effect journal March 2018
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An Empirical Algorithm to Retrieve Significant Wave Height from Sentinel-1 Synthetic Aperture Radar Imagery Collected under Cyclonic Conditions journal August 2018
Forcing the Penman-Montheith Formulation with Humidity, Radiation, and Wind Speed Taken from Reanalyses, for Hydrologic Modeling journal June 2019
Integrating multiple satellite observations into a coherent dataset to monitor the full water cycle – application to the Mediterranean region journal January 2019
Wave climate in the Arctic 1992–2014: seasonality and trends journal January 2016
Wave climate in the Arctic 1992-2014: seasonality and trends journal February 2016

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