Two Decades [1992-2012] of Surface Wind Analyses based on Satellite Scatterometer Observations
| Autor: | Alberto M. Mestas-Nuñez, Bruno Blanke, Abderrahim Bentamy, Christophe Maes, Steven Herbette, Gildas Cambon, Semyon A. Grodsky, Fabien Desbiolles, Claude Roy |
|---|---|
| Přispěvatelé: | Laboratoire d’Oéanographie Spatiale [Plouzané] (LOS), Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER), Laboratoire d'Océanographie Physique et Spatiale (LOPS), Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de physique des océans (LPO), Desbiolles, F, Bentamy, A, Blanke, B, Roy, C, Mestas-Nunez, M, Grodsky, S, Herbette, S, Cambon, G, Maes, C |
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean
Atmosphere Radiometer 010504 meteorology & atmospheric sciences Buoy Meteorology Scatterometry winds long timeserie global data provided 0211 other engineering and technologies Mesoscale meteorology Maximum sustained wind 02 engineering and technology Aquatic Science Scatterometer Oceanography 01 natural sciences Wind speed 13. Climate action Kriging Climatology Environmental science Satellite 14. Life underwater ComputingMilieux_MISCELLANEOUS Ecology Evolution Behavior and Systematics 021101 geological & geomatics engineering 0105 earth and related environmental sciences |
| Zdroj: | Journal Of Marine Systems (0924-7963) (Elsevier Science Bv), 2017-04, Vol. 168, P. 38-56 Journal of Marine Systems Journal of Marine Systems, Elsevier, 2017, 168, pp.38-56. ⟨10.1016/j.jmarsys.2017.01.003⟩ |
| ISSN: | 0924-7963 |
| DOI: | 10.1016/j.jmarsys.2017.01.003⟩ |
| Popis: | Surface winds (equivalent neutral wind velocities at 10 m) from scatterometer missions since 1992 have been used to build up a 20-year climate series. Optimal interpolation and kriging methods have been applied to continuously provide surface wind speed and direction estimates over the global ocean on a regular grid in space and time. The use of other data sources such as radiometer data (SSM/I) and atmospheric wind reanalyses (ERA-Interim) has allowed building a blended product available at 1/4° spatial resolution and every 6 h from 1992 to 2012. Sampling issues throughout the different missions (ERS-1, ERS-2, QuikSCAT, and ASCAT) and their possible impact on the homogeneity of the gridded product are discussed. In addition, we assess carefully the quality of the blended product in the absence of scatterometer data (1992 to 1999). Data selection experiments show that the description of the surface wind is significantly improved by including the scatterometer winds. The blended winds compare well with buoy winds (1992–2012) and they resolve finer spatial scales than atmospheric reanalyses, which make them suitable for studying air-sea interactions at mesoscale. The seasonal cycle and interannual variability of the product compare well with other long-term wind analyses. The product is used to calculate 20-year trends in wind speed, as well as in zonal and meridional wind components. These trends show an important asymmetry between the southern and northern hemispheres, which may be an important issue for climate studies. |
| Databáze: | OpenAIRE |
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