1 edition of Correlation of satellite-detected aerosol characteristics and oceanic dimethylsulfide (DMS) found in the catalog.
Correlation of satellite-detected aerosol characteristics and oceanic dimethylsulfide (DMS)
Richard A. Shema
by Naval Postgraduate School, Available from the National Technical Information Service in Monterey, Calif, Springfield, Va
Written in English
|Other titles||Correlation between satellite-detected aerosol characteristics and ocean dimethylsulfide (DMS)|
|Contributions||Durkee, Philip A.|
|The Physical Object|
|Number of Pages||49|
Environmental context Future changes in marine biogenic aerosol emissions in Arctic seas are likely to affect the radiative budget of the region. Here we employ a calibrated biogeochemical model to simulate change in sulfate aerosol emissions in the Barents Sea, and find strong increases occur by the late 21st century. If replicated across the Arctic Ocean, such increases in sulfate aerosol Cited by: 6. CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): This document describes the algorithms for simultaneous remote sensing of aerosol from EOS-MODIS over land and ocean. The algorithm will be used to monitor the aerosol optical thickness (proportional to the aerosol total loading) and size distribution (integrated on the vertical column) of the ambient (undisturbed.
An Evaluation of the Naval Oceanic Vertical Aerosol Model During Key90 by Thomas H. Cecere Lieutenant, United States Navy B.S., State University of New York at Stony Brook, Submitted in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE IN METEOROLOGY AND PHYSICAL OCEANOGRAPHY from the NAVAL POSTGRADUATE SCHOOL. influenced by aerosol properties of the atmosphere and several variables we do not yet examine are likely to play a role. We find correlation between optical properties of the ocean and atmosphere over much of the globe, in particular the midlatitudes. While some regional analyses indicate that SeaWiFS chlorophyll retrievals are biased by dust in.
Aerosol anthropogenic component estimated from satellite data Y. J. Kaufman,1 O. Boucher,2,3 D. Tanre´,4 M. Chin,1 L. A. Remer,1 and T. Takemura1,5 Received 31 March ; revised 5 July ; accepted 19 July ; published 3 September  Satellite instruments do not measure the aerosol . Exeter Book, the largest extant collection of Old English c. , the manuscript was given to Exeter Cathedral by Bishop Leofric (died ). It begins with some long religious poems: the Christ, in three parts; two poems on St. Guthlac; the fragmentary “Azarius”; and the allegorical Phoenix. Following these are a number of shorter religious verses intermingled with poems of.
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About Cookies, including instructions on how to turn off cookies if you wish to do so. By continuing to browse this site you agree to us using cookies as described in. Correlation between satellite-detected aerosol characteristics and ocean dimethylsulfide (DMS)Author: Richard A.
Shema. From the results of the molar ratio of methane sulfonic acid to non‐sea‐salt sulfate (NSS) and the positive correlation between dimethylsulfide (DMS) and CCN in this air mass it can be concluded that DMS largely contributes to the production of NSS and by:  The relationship between the production of dimethylsulfide (DMS) in the upper ocean and atmospheric sulfate aerosols has been confirmed through local shipboard measurements, and global modeling studies alike.
In order to examine whether such a connection may be recoverable in the satellite record, we have analyzed the correlation between mean surface chlorophyll (CHL) and aerosol optical depth (AOD) in the Southern Ocean Cited by: Simultaneous measurements of oceanic dimethylsulfide (DMS), atmospheric aerosol sulfate and the size‐resolved physical properties of the aerosol were.
The satellite detected radiance from Equation (3) is the sum of aerosol particle radiance and path-added Rayleigh radiance (L = LA + LR). Path-added Rayleigh Global analysis of aerosol particle characteristics radiance is radiant energy that is due to Cited by: MSA aerosol means the MSA concentration in the atmospheric aerosol, while nss-/MSA indicates their ratio in the remote ocean air.
Many observations have been made over the Pacific Ocean to evaluate the relationship between nss-and MSA in the marine aerosol (Saltzman et al. ; Bates et al. ; Kim et al. ).Cited by: 7. dimethylsulfide (DMS) were made over the tropical and midlatitude North Pacific Ocean.
Atmospheric pressure chemical ionization mass spectrometry was used to measure DMS levels in ambient air and in air equilibrated with surface seawater drawn from a depth of 5 m.
Air/sea fluxes were obtained using eddy covariance. Corrections and uncertainties. Influence of oceanic dimethyl sulfide emissions on cloud condensation nuclei concentrations and seasonality over the remote Southern Hemisphere oceans: A global model study August Journal of.
Oceanic dimethylsulfide (DMS), excreted by phytoplankton in the remote ocean, may be a major source of cloud condensation nuclei (CCN). The process includes the formation of non-sea-salt sulfates (NSS-SO) which serve as a substrate for CCN. The Earth's mean temperature is sensitive to cloud albedo which is a direct function.
The CLAW hypothesis advanced the idea of biological regulation of Earth's climate. In the proposed feedback loop, cloud condensation nuclei and cloud albedo are regulated up or down by oceanic. Satellite retrieval of aerosol properties over the ocean using aerosol characteristics with extremely high accuracy (+_ in aerosol optical thickness, basis of EOSP aerosol retrievals over the ocean and to illustrate in detail why polarization is so sensitive to aerosol properties and, in conjunction with intensity, provides a much Cited by: Dimethylsulfide (DMS) is an important marine biogenic gas; the oxidation products of DMS, such as methanesulfonic acid (MSA) and nss-SO 4 2−, are climatically active compounds on the ocean surface and in the lower being emitted into the atmosphere, DMS is primarily oxidized by OH, BrO, and NO 3 radicals via addition and abstraction reaction routes (Von Glasow and Cited by: 9.
Abstract. Dimethylsulfide (DMS), sulfur dioxide (SO 2), methanesulfonate (MSA), nonsea-salt sulfate (nss-SO 4 2−), sodium (Na +), ammonium (NH 4 +), and nitrate (NO 3 −) were determined in samples collected by aircraft over the open ocean in postfrontal maritime air masses off the northwest coast of the United States (3–12 May ).Measurements of radon daughter concentrations and Cited by: Dimethylsulfide (DMS), outgassed from ocean waters, plays an important role in the climate system, as it oxidizes to methane sulfonic acid (MSA) and sulfur dioxide (SO2), which can lead to the.
• changes in the ocean dynamic control the DMS production and DMS sea surface concentration, like: • enhanced ocean stratification ⇒reduced nutrient transport • enhanced summer mixed layer depth in the Southern Ocean ⇒reduced light exposure of phytoplankton which lead to a reduction of the DMS sea surface concentration in a warmer climate.
Aerosol as a climateforming component of K Ya Kondratyev Atmospheric and Oceanic Optics, Volume 8, Issues Snippet view - Atmospheric and Oceanic Optics, Vol Issues analysis analyzed anthropogenic Atmos atmospheric aerosol atmospheric boundary layer Atmospheric Optics atoms beam calculated characteristics.
The amount of nss sulfate in a marine aerosol sample was calculated on the basis of the sodium and sulfate aerosol concentration by assuming the ratio of sea- salt sulfate and sodium in the aerosol to be the same as in seawater: S (SO~ -)n~ = S (SO~-)totaJ - X (Na + } X = (S (SO~ -) (Na +) l).
j, = (Keene et al., ).Cited by: Bates T S Cline J D Gammon R H Kely-Hansen S R Regional and seasonal variations in the flux of oceanic dimethylsulfide to the atmosphere. J Geophys. Res. 92, –Cited by: Environmental context The trace gas dimethylsulfide (DMS) is emitted from surface ocean waters to the overlying atmosphere, where it forms aerosols that promote cloud formation and influence Earth’s climate.
We present an updated climatology of DMS emissions from the vast Southern Ocean, demonstrating how the inclusion of new data yields higher regional sources compared with previously Cited by:.
The results of our previous paper [Mishchenko and Travis, ] and this one demonstrate the limited capabilities of aerosol retrieval techniques based on intensioty measurements alone and suggest that high-precision spaceborne polarimetry may potentially be the only way of retrieving aerosol characteristics with accuracy needed for long-term.The effects of increased dimethyl-sulfide (DMS) emissions due to increased marine phytoplankton activity are examined using an atmosphere-ocean coupled climate model.
As the DMS emission flux from the ocean increases globally, large-scale cooling occurs due to the DMS-cloud condensation nuclei (CCN)-cloud albedo interactions. This cooling increases as DMS emissions are further increased, with Cited by: 1.In statistics, the correlation coefficient r measures the strength and direction of a linear relationship between two variables on a scatterplot.
The value of r is always between +1 and –1. To interpret its value, see which of the following values your correlation r is closest to: Exactly –1. A perfect downhill (negative) linear relationship [ ].