Using High Resolution Satellite Derived Wind Speed and Sea Surface Temperature to Measuring the Global Exchange Coefficient and Air-sea CO2 Flux PDF Download
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Author: Christopher D. Jeffery
Publisher:
ISBN:
Category :
Languages : en
Pages : 79
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Author: Christopher D. Jeffery
Publisher:
ISBN:
Category :
Languages : en
Pages : 79
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 36
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Author: Geun-Ha Park
Publisher:
ISBN:
Category : Atmospheric carbon dioxide
Languages : en
Pages : 14
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Book Description
Seasonal air-sea carbon dioxide (CO2) flux maps were calculated from wind speed data and the difference in CO2 partial pressure between surface seawater (pCO2SW) and the overlying atmosphere. To infer the seasonal variability of global net air-sea CO2 fluxes over the last three decades, we derived the optimum subannual relationships between pCO2SW and the sea surface temperature (SST). These optimum subannual relationships accounted for the variations between pCO2SW and SST and showed significantly better correlations than previous relationships with fixed monthly boundaries. The derived algorithms were then applied to high-resolution SST data to yield changes in pCO2SW on a monthly basis. The pCO2SW values were also combined with a gas transfer velocity estimate derived from high resolution wind products to estimate seasonal fluxes. The seasonal fluxes that are calculated with a three- to six-month lag from real-time can be obtained at http://cwcgom.aoml.noaa.gov/erddap/griddap/aomlcarbonfluxes.graph. Here, we describe in detail the procedures and uncertainties of this product.
Author: Peter S. Liss
Publisher: Springer
ISBN: 3642256430
Category : Science
Languages : en
Pages : 366
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Book Description
The oceans and atmosphere interact through various processes, including the transfer of momentum, heat, gases and particles. In this book leading international experts come together to provide a state-of-the-art account of these exchanges and their role in the Earth-system, with particular focus on gases and particles. Chapters in the book cover: i) the ocean-atmosphere exchange of short-lived trace gases; ii) mechanisms and models of interfacial exchange (including transfer velocity parameterisations); iii) ocean-atmosphere exchange of the greenhouse gases carbon dioxide, methane and nitrous oxide; iv) ocean atmosphere exchange of particles and v) current and future data collection and synthesis efforts. The scope of the book extends to the biogeochemical responses to emitted / deposited material and interactions and feedbacks in the wider Earth-system context. This work constitutes a highly detailed synthesis and reference; of interest to higher-level university students (Masters, PhD) and researchers in ocean-atmosphere interactions and related fields (Earth-system science, marine / atmospheric biogeochemistry / climate). Production of this book was supported and funded by the EU COST Action 735 and coordinated by the International SOLAS (Surface Ocean- Lower Atmosphere Study) project office.
Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781720779308
Category :
Languages : en
Pages : 34
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Sensitivity analyses of sea-air CO2 flux to gas transfer algorithms, climatological wind speeds, sea surface temperatures (SST) and salinity (SSS) were conducted for the global oceans and selected regional domains. Large uncertainties in the global sea-air flux estimates are identified due to different gas transfer algorithms, global climatological wind speeds, and seasonal SST and SSS data. The global sea-air flux ranges from -0.57 to -2.27 Gt/yr, depending on the combination of gas transfer algorithms and global climatological wind speeds used. Different combinations of SST and SSS global fields resulted in changes as large as 35% on the oceans global sea-air flux. An error as small as plus or minus 0.2 in SSS translates into a plus or minus 43% deviation on the mean global CO2 flux. This result emphasizes the need for highly accurate satellite SSS observations for the development of remote sensing sea-air flux algorithms.McClain, Charles R. and Signorini, SergioGoddard Space Flight CenterALGORITHMS; CARBON DIOXIDE; CLIMATOLOGY; SALINITY; SEA SURFACE TEMPERATURE; WIND VELOCITY; OCEANOGRAPHY; GASES; FLUX QUANTIZATION; ERRORS; SENSITIVITY ANALYSIS; AIR WATER INTERACTIONS
Author: G.L. Geernaert
Publisher: Springer Science & Business Media
ISBN: 9401592918
Category : Science
Languages : en
Pages : 573
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Book Description
During the 1980's a wealth of information was reported from field and laboratory experiments in order to validate andlor modify various aspects of the surface layer Monin-Obukhov (M-O) similarity theory for use over the sea, and to introduce and test new concepts related to high resolution flux magnitudes and variabilities. For example, data from various field experiments conducted on the North Sea, Lake Ontario, and the Atlantic experiments, among others, yielded information on the dependence of the flux coefficients on wave state. In all field projects, the usual criteria for satisfying M-O similarity were applied. The assumptions of stationarity and homogeneity was assumed to be relevant over both small and large scales. In addition, the properties of the outer layer were assumed to be "correlated" with properties of the surface layer. These assumptions generally required that data were averaged for spatial footprints representing scales greater than 25 km (or typically 30 minutes or longer for typical windspeeds). While more and more data became available over the years, and the technology applied was more reliable, robust, and durable, the flux coefficients and other turbulent parameters still exhibited significant unexplained scatter. Since the scatter did not show sufficient reduction over the years to meet customer needs, in spite of improved technology and heavy financial investments, one could only conclude that perhaps the use of similarity theory contained too many simplifications when applied to environments which were more complicated than previously thought.
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 702
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Author: Burton G. Hurdle
Publisher: Springer Science & Business Media
ISBN: 1461580358
Category : Science
Languages : en
Pages : 788
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" ... as soon as one has traversed the greater part of the wild sea, one comes upon such a huge quantity of ice that nowhere in the whole world has the like been known." "This ice is of a wonderful nature. It lies at times quite still, as one would expect, with openings or large fjords in it; but sometimes its movement is so strong and rapid as to equal that of a ship running before the wind, and it drifts against the wind as often as with it." Kongespeilet - 1250 A.D. ("The Mirror of Kings") Modern societies require increasing amounts influence on the water mass and on the resulting of scientific information about the environment total environment of the region; therefore, cer tain of its characteristics will necessarily be in whieh they live and work. For the seas this information must describe the air above the sea, included.
Author: National Research Council
Publisher: National Academies Press
ISBN: 9780309103879
Category : Science
Languages : en
Pages : 460
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Book Description
Natural and human-induced changes in Earth's interior, land surface, biosphere, atmosphere, and oceans affect all aspects of life. Understanding these changes requires a range of observations acquired from land-, sea-, air-, and space-based platforms. To assist NASA, NOAA, and USGS in developing these tools, the NRC was asked to carry out a "decadal strategy" survey of Earth science and applications from space that would develop the key scientific questions on which to focus Earth and environmental observations in the period 2005-2015 and beyond, and present a prioritized list of space programs, missions, and supporting activities to address these questions. This report presents a vision for the Earth science program; an analysis of the existing Earth Observing System and recommendations to help restore its capabilities; an assessment of and recommendations for new observations and missions for the next decade; an examination of and recommendations for effective application of those observations; and an analysis of how best to sustain that observation and applications system.
Author: J. Boutin
Publisher:
ISBN:
Category : Carbon dioxide
Languages : en
Pages :
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