Download or read book A Study of the Marine Atmospheric Boundary Layer in the Coastal Ocean Dynamics Experiment CODE written by Janice Campbell and published by . This book was released on 1984 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book CODE Coastal Ocean Dynamics Experiment written by S. J. Lentz and published by . This book was released on 1990 with total page 838 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Observational and Modelling Studies of the Marine Atmospheric Boundary Layer Over the Tropical Indian Ocean During Indoex written by D. Bala Subrahamanyam and published by GRIN Verlag. This book was released on 2011-08-26 with total page 217 pages. Available in PDF, EPUB and Kindle. Book excerpt: Doctoral Thesis / Dissertation from the year 2003 in the subject Physics - Applied physics, grade: None, Mahatma Gandhi University (Space Physics Laboratory - Vikram Sarabhai Space Centre, Thiruvananthrapuram - 695 022), course: Atmospheric Sciences, language: English, abstract: The Atmospheric Boundary Layer (ABL) over the oceanic surface is commonly referred to as the Marine Atmospheric Boundary Layer (MABL) and it can be considered as the turbulent region in the immediate vicinity of the oceanic surface. The major features that distinguish the ABL over ocean from its land counterpart are the wet, mobile, lower boundary in addition to certain ocean-specific thermodynamic and dynamic characteristics. The structure and characteristics of the MABL and its interactions with the oceanic surface and the overlying free atmosphere are known mainly as a result of a synergistic combination of observational studies, numerical and laboratory simulations, and dimensional analysis. Our present knowledge and understanding of the MABL over various oceanic regions of the globe comes from the experience and expertise acquired during various field experiments. The present thesis aims at improving our understanding of the structural characteristics of the MABL and its associated dynamics over the data-sparse region of western tropical Indian Ocean by making use of the meteorological data collected onboard Oceanic Research Vessel (ORV) Sagar Kanya and Kaashidhoo Climate Observatory (KCO) during the Intensive Field Phase (IFP-99) of the Indian Ocean Experiment (INDOEX).
Download or read book The Marine Atmospheric Boundary Layer During Coastal Waves 96 written by Kathleen A. Edwards and published by . This book was released on 2000 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Coastal Ocean Dynamics Experiment code written by COASTAL (THEOCEAN DYNAMICS EXPERIMENT) and published by . This book was released on 1987 with total page 430 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Characteristics and Evolution of the Marine Atmospheric Boundary Layer During the Surface Wave Dynamics Experiment written by Katherine M. Howard and published by . This book was released on 1993 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Boundary Layer Meteorology 25th Anniversary Volume 1970 1995 written by John R. Garratt and published by Springer Science & Business Media. This book was released on 1996-09-30 with total page 434 pages. Available in PDF, EPUB and Kindle. Book excerpt: The journal Boundary-Layer Meteorology was started in 1970 and has become the premier vehicle for the publication of research papers in its field. Dr R.E. Munn served as Editor-in-Chief until recently. The special 25th Anniversary volume, on which this book is based, was compiled from review and other articles solicited and selected as a `Festschrift' to honour Ted Munn's achievement as editor of the journal over that time. Articles by leading contributors to the field include reviews of field studies (Askervein, HEXOS, Cabauw) and their impacts; numerical modelling (large-eddy simulation of the surface layer, frontal structures); analyses and critical discussions (of the von Karman constant, bulk aerodynamic formulations, air-sea interaction, vegetation canopies); and reviews or previews of progress in our understanding of the atmospheric boundary layer, turbulence simulation, Lagrangian descriptions of turbulent diffusion and remote sensing of the boundary layer. The collection provides an excellent perspective on the state of the subject and where it is headed. It should provide fascinating and stimulating reading for researchers and students of boundary-layer meteorology and related areas.
Download or read book Oceanic Abstracts written by and published by . This book was released on 1997-10 with total page 1070 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 702 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Adjustment of the Atmospheric Boundary Layer with Capes and Points Off Southern California written by Christopher G. Kruse and published by . This book was released on 2013 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt: Strong wind and moderate wind cases conducted as part of the Precision Atmospheric Marine Boundary Layer Experiment were analyzed in order to study marine atmospheric boundary layer (MABL) adjustment around two major coastal points. In the moderate wind case, MABL adjustments were observed upstream of both points, while in the strong wind case, adjustment was only observed upstream of one of the points. A rapid thinning and acceleration of the MABL were observed downstream of both points in both cases, consistent with expansion fan dynamics. It was found that flow often transitions from subcritical to supercritical around the points, leading to upstream blocking and downstream expansion fan adjustments. Lee thinning and acceleration were observed in the strong wind case; however, these adjustments are influenced by both flow around and over the coastal points. Three distinct layers were often observed in the lees of coastal points.
Download or read book The Atmospheric Boundary Layer written by J. R. Garratt and published by Cambridge University Press. This book was released on 1994-04-21 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book gives a comprehensive and lucid account of the science of the atmospheric boundary layer (ABL). There is an emphasis on the application of the ABL to numerical modelling of the climate. The book comprises nine chapters, several appendices (data tables, information sources, physical constants) and an extensive reference list. Chapter 1 serves as an introduction, with chapters 2 and 3 dealing with the development of mean and turbulence equations, and the many scaling laws and theories that are the cornerstone of any serious ABL treatment. Modelling of the ABL is crucially dependent for its realism on the surface boundary conditions, and chapters 4 and 5 deal with aerodynamic and energy considerations, with attention to both dry and wet land surfaces and sea. The structure of the clear-sky, thermally stratified ABL is treated in chapter 6, including the convective and stable cases over homogeneous land, the marine ABL and the internal boundary layer at the coastline. Chapter 7 then extends the discussion to the cloudy ABL. This is seen as particularly relevant, since the extensive stratocumulus regions over the subtropical oceans and stratus regions over the Arctic are now identified as key players in the climate system. Finally, chapters 8 and 9 bring much of the book's material together in a discussion of appropriate ABL and surface parameterization schemes in general circulation models of the atmosphere that are being used for climate simulation.
Download or read book Marine Atmospheric Boundary Layer Studies During Indoex Ifp 99 written by D. Bala Subrahamanyam and published by LAP Lambert Academic Publishing. This book was released on 2011-09 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The Atmospheric Boundary Layer over the oceanic surface is commonly referred to as the Marine Atmospheric Boundary Layer (MABL) and it can be considered as the turbulent region in the immediate vicinity of the oceanic surface. The structure and characteristics of the MABL and its interactions with the oceanic surface and the overlying free atmosphere are known mainly as a result of a synergistic combination of observational studies, numerical and laboratory simulations, and dimensional analysis. Our present knowledge and understanding of the MABL over various oceanic regions of the globe comes from the experience and expertise acquired during various field experiments. This thesis aims at improving our understanding of the structural characteristics of the MABL and its associated dynamics over the data-sparse region of western tropical Indian Ocean by making use of the meteorological data collected onboard Oceanic Research Vessel Sagar Kanya and Kaashidhoo Climate Observatory during Indian Ocean Experiment." -- Dr. D. Bala Subrahamanyam
Download or read book A Summary of Research 1995 written by United States. Naval Postgraduate School, Monterey, CA. and published by . This book was released on 1995 with total page 588 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Monthly Weather Review written by and published by . This book was released on 1990 with total page 750 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Meteorological and Geoastrophysical Abstracts written by and published by . This book was released on 1996 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Structure of the Marine Atmospheric Boundary Layer written by Sylvain M. Joffre and published by . This book was released on 1985 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Chemistry and Dynamics of the Tropical Marine Atmospheric Boundary Layer Observations from the Pacific Atmospheric Sulfur Experiment PASE written by Stephen A. Conley and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Energy exchange between the tropical oceans and the atmosphere plays an important role in the climate of the planet. By far the most abundant form of this transfer occurs in regions of shallow (generally non-precipitating) convection that takes place underneath the gentle lid of the trade wind inversion. Understanding the atmospheric dynamics and exchange of chemical species between the ocean and atmosphere in this region is a critical step on the path to accurate modeling of the earth's climate. Fourteen research flights were conducted with the National Center for Atmospheric Research (NCAR) C-130 near Christmas Island (2°N, 157°W) during the summer of 2007 as part of the Pacific Atmospheric Sulfur Experiment (PASE). Vertical profiles from near the surface to above the trade wind inversion (observed at a mean altitude of 1350m) were used to characterize the vertical structure of the dynamic and chemical scalars within the marine boundary layer. The marine atmosphere was divided into four levels, a surface layer (~30m) overlain by a turbulent mixed layer which extends to ~550m, overlain by a less turbulent buffer layer (BuL), extending to ~1350m, overlain by the free troposphere (FT). The SL and the mixed layer together constitute the marine boundary layer (MBL). Separating the MBL and the BuL is a weak inversion with a much stronger inversion separating the BuL from the FT. This work focuses on dimethyl sulfide (DMS), ozone (O3) and the boundary layer dynamics of the region. In the MBL, DMS and O3 both exhibited the well-known diurnal cycle of buildup at night followed by daytime destruction. DMS ranged from 50-95 pptv in the daytime to 90-110 pptv at night and O3 from 16-18 ppb during the daytime to 17-21 ppb at night. Contributions from horizontal advection are included using a multivariate regression of the observed mixing ratio as a function of time and space within the MBL to estimate the mean gradients and trends. With this technique we can use the residual term in the budget as an estimate of overall photochemical oxidation. Error analysis of the various terms in the DMS budget indicate that chemical losses acting on time scales of up to 110 hours can be inferred with this technique. On average, photochemistry accounted for ~ 7.4 ppt hr−1 loss rate for the seven daytime flights, with an estimated error of 0.6 ppt hr−1. The loss rate due to expected OH oxidation is sufficient to explain the net DMS destruction without invoking the action of additional oxidants (e.g., reactive halogens). The observed ocean flux of DMS averaged 3.1 (± 1.5) [mu]mol m−2d−1, and generally decreased throughout the sunlit hours. Averaged over the mission, horizontal advection was negligible in the DMS budget but was significant in the budgets of individual flights. The ozone budget included the same dynamical terms as the DMS budget but also included loss to photolysis, OH and HO2. Photolysis is the dominant chemical sink (~ 0.29 ppb/hour). Horizontal advection and vertical flux divergence contribute similar amounts to the budget (0.08 ppb hr−1, 0.06 ppb hr−1). The advective source is consistent with the picture from the Total Ozone Mapping Spectrometer (TOMS) indicating higher levels of ozone upwind from the PASE region. The entrainment flux from the FT to the BuL was estimated at 0.07 ppb m s−1. A budget of turbulent kinetic energy (TKE) exhibited evenly distributed shear production throughout the MBL along with an expected linear profile of buoyancy production. Two loci of approximately equal parts shear production, transport, and buoyancy production sustain TKE in the BuL at levels of ~70% that within the MBL. A mean cloud fraction profile from the experiment confirms a bimodal distribution of trade wind cumuli with a major peak at the top and a secondary peak in the lower third of the BuL, consistent with the picture of shallow convection supplying the bulk of the TKE to this layer, but not uniformly in the vertical. Surface latent heat fluxes were measured by eddy covariance and were on average found to be 30% less the standard NOAA bulk model. The Bowen ratio averaged 0.05 with very little flight to flight variability (± 0.03). The observed east-southeasterly winds averaged 8 ms−1 (at 10 meters) in this region feeding into the ITCZ located at approximately 10 degrees N. On most flights a low level jet was observed either within or just above the BuL. During the four week mission, SST over the entire region decreased by 1.5C as a tropical instability wave brought colder water to the equatorial mid Pacific with winds surface winds increasing by 0.5 m s−1 during the experiment. The shape of the cospectra between vertical wind speed and potential temperature exhibited the traditional Kaimal form; however, water vapor and DMS cospectra exhibited less power at the highest frequencies with their cospectral peaks shifted toward larger scales.
