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This is the latest and best ocean wind information available. It has been collected by NASA satellites over ten years. It replaces the old pilot charts which were collected from sailing ship logs. These charts have never been published before. This is valuable information for sailors and seamen doing ocean passages.
This is the latest ocean wind information collected by NASA satellites over ten years. It replaces the old pilot charts which were collected from sailing ship logs. These charts have never been published before. This is valuable information for sailors and seamen doing ocean passages. 12 monthly charts. From its orbit onboard the QuikSCAT satellite, the SeaWinds instrument samples 90 percent of the Earth's oceans every 24 hours. SeaWinds sends pulses of microwave radiation down to the wind-roughened surface and measures the backscatter of that radiation that returns to the satellite. From this data, wind speed and direction can be estimated. This knowledge has long been limited by poor in situ coverage by buoys and ships. Among the researchers' findings: - Earth's windiest ocean location is Cape Farewell, Greenland, where gale winds blow 16 percent of the time. - Half of the top 10 windiest spots occur where tall coastlines or high mountains meet the sea. - Strong winds are much more frequent on the warm side of cold-warm fronts formed where the Atlantic's warm Gulf Stream flows northward into cold ocean regions. This gives climate scientists important clues about how sharp differences in ocean surface temperatures affect the atmosphere, with warm ocean temperatures creating an unstable atmosphere that sucks strong winds down from aloft. - Typhoons and hurricanes have little impact on the frequency of overall high winds, since they are less frequent than other types of storms in Earth's mid-latitudes. "People know high winds are found in big storms," said Xie. "What is most surprising from our research is that narrow ocean currents have such a large effect on the occurrence of high winds. For example, in cold meanders (bends) of the Atlantic's Gulf Stream, the frequency of high winds drops by an order of magnitude. This knowledge can provide navigators with a 'safe harbor' for ships."
Annotated Atlas of Coastal and Marine Winds provides a quick-reference on major, prevailing near-surface wind systems, along with concise explanations of the features that cause these winds and a quick qualitative assessment. As accessibility to the most recent and complete atmospheric datasets is often limited, either because they are subscription-based or because they are available only in netCDF format, this book alleviates roadblocks by providing the major, prevailing near-surface wind systems, concise explanations, the features that cause these winds, and a qualitative assessment on the amount of moisture that such winds typically carry to coastal and marine scientists and engineers. This book will be an ideal resource on coastal and marine winds for a variety of professionals, including coastal scientists, marine scientists, and engineers who study phenomena that are affected directly by weather and climate. - Presents a simple summary of the atmospheric process in text blocks, alongside each map - Provides a quick reference on prevailing global and regional wind patterns and moisture transport for understanding pollution patterns, prevailing storm tracks, climatology deviations, meteorology, and atmosphere-ocean relationships - Includes easy-to-access summary information about prevailing wind directions, sea level pressure, and water vapor flux, all in one place
A comprehensive exploration of our oceans, covering geography, ecosystems, and animals through a mix of illustrations, photographs, maps, and diagrams. Map out the oceans layers, from the sunlight zone to the abyss, exploring the conditions within each zone and the different creatures that live there, as well as exploring features of the ocean floor such as underwater volcanoes, thermal vents, and the mid-Atlantic ridge. It also: Explores ocean currents and tides. Looks at the migrations of different ocean-dwelling creatures. Maps the sea bed, including information on how oceanographers gather their data Explores sea temperatures and ocean chlorophyll and plankton, looking at the impact these elements have on ecosystems. Looks at environmental issues such as pollution, acidification, ice-cap melt and rising temperatures.