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New Study Explains Mysterious Source of Greenhouse Gas Methane in the Ocean
Mysterious Source Greenhouse Gas Methane the Ocean
2016/11/29
For decades, marine chemists have faced an elusive paradox. The surface waters of the world’s oceans are supersaturated with the greenhouse gas methane, yet most species of microbes that can generate ...
Deep-sea bacteria could help neutralize greenhouse gas,researchers find
Deep-sea bacteria neutralize greenhouse gas
2015/11/12
Carbon dioxide, a major contributor to the buildup of atmospheric greenhouse gases, can be captured and neutralized in a process known as sequestration. Most atmospheric carbon dioxide is produced fro...
There are thousands of deepwater sites in the Gulf of Mexico
where persistent natural hydrocarbon seepage contributes
to the formation of authigenic carbonate hardgrounds on a
seafloor dominated...
Gas Hydrates in Marine Sediments:Lessons from Scientific Ocean Drilling
Gas Hydrates Marine Sediments Scientific Ocean Drilling
2015/7/24
Certain low-molecular-weight gases, such as methane, ethane, and carbon dioxide, can combine with water to form ice-like substances at high pressure or low temperature. These compounds, commonly calle...
Investigations of Air-Sea Gas Exchange in the CoOP Coastal Air-Sea Chemical Exchange Project
Air-Sea Gas Exchange CoOP Coastal Air-Sea Chemical Exchange
2015/7/22
The exchange of CO2 and other gases across the ocean-air interface is an extremely important component in global climate dynamics, photosynthesis and respiration, and the absorption of anthropogenical...
Production of nitrogen gas via anammox and denitrification in intact sediment cores along a continental shelf to slope transect in the North Atlantic
Production of nitrogen gas anammox denitrification intact sediment cores a continental shelf slope transect the North Atlantic
2014/4/17
We measured the production of N2 gas from anammox and denitrification simultaneously in intact sediment cores at six sites along a transect of the continental shelf (50 m) and deeper slope (2000 m) in...
Nitrogen isotopic fractionation associated with growth on dinitrogen gas and nitrate by cyanobacteria
Nitrogen isotopic fractionation associated cyanobacteria
2014/4/18
This study investigated the bulk nitrogen isotopic composition and fractionation of marine and freshwater
cyanobacteria growing at the expense of atmospheric dinitrogen gas (N2) or nitrate (NO{
3
)...
On the Fluid Dynamical Theory of Turbulent Gas Transfer Across an Air-Sea Interface in the Presence of Breaking Wind-Waves
Fluid Dynamical Theory Turbulent Gas Transfer Air-Sea Interface Breaking Wind-Waves
2009/1/20
It is shown that in order to describe the transfer of gases in the liquid near the air-sea interface, the vertical structure of three-dimensional small-scale turbulence in turbulent patches generated ...
Parameterization of the Cool Skin of the Ocean and of the Air-Ocean Gas Transfer on the Basis of Modeling Surface Renewal
Cool Skin Modeling Surface Renewal Air-Ocean Gas Transfer
2008/12/16
Heat and gas transport in molecular sublayers at the air-sea interface is governed by similar laws. A model of renewal type based on the physics of molecular sublayers allows the derivation of a param...
Air–Sea Gas Transfer: Mechanisms and Parameterization
Air–Sea Gas Transfer empirical formulas three wind-velocity regions
2008/12/10
The rate of air–sea gas transfer has been largely parameterized on the basis of studies performed in laboratory tanks: empirical formulas are proposed for three wind-velocity regions. Observed feature...
Comments on “Air–Sea Gas Transfer: Mechanisms and Parameterization”
Air–Sea Gas Transfer Mechanisms Parameterization
2008/10/27
Fluxes of gases like CO2 across the sea surface constitute an important part of the global climate. However, direct field measurements of these fluxes are problematic and much effort has been put into...
Gas transfer velocities of CO2 in three European estuaries (Randers Fjord, Scheldt, and Thames)
Gas transfer velocities three European estuaries
2014/5/19
We measured the flux of CO2
across the air–water interface using the floating chamber method in three European
estuaries with contrasting physical characteristics (Randers Fjord, Scheldt...
Gas transfer velocities measured at low wind speed over a lake
Gas transfer velocities measured low wind speed over a lake
2014/5/20
The relationship between gas transfer velocity and wind speed was evaluated at low wind speeds by quantifying the rate of evasion of the deliberate tracer, SF6, from a small oligotrophic lake. Several...
Meteorological controls of gas exchange at a small English lake
Meteorological controls gas exchange small English lake
2014/5/27
The relationships between gas transfer velocity, k600, wind speed, wind direction, rainfall, and relative humidity were examined using measurements of SF6 evasion from Coatenhill Reservoir, a small (0...