theatmosphere,thedifferentialequationforozoneDisequaltogrossproductionPminusgrosslossLplustransport,whichmaybewrittenD P(methane) L(methane) P(notmethane) L(notmethane) transport.IfbothP(notmethane)andL(notmethane)areeffectivelyzero,thenthefulldifferentialequationisequaltothedifferentialequationfortheeffectof...
The effect of each greenhouse gas on Earth’s climate depends on its chemical nature and its relative concentration in theatmosphere. Some gases have a highcapacityfor absorbing infrared radiation or occur in significant quantities, whereas others have considerably lower capacities for absorption or occ...
Methane recently reached 1,900 parts per billion (ppb) of Earth’s atmosphere according to measurements taken by theNational Oceanic and Atmospheric Administration(NOAA) in the US. This compares with about700 ppbbefore the indus...
Humanactivityemitsfarlessmethane(甲烷)thancarbondioxide,butmethanehasabiggerimpactontheearth.Overthecourseof20years,atonofthegaswillwarmtheatmosphereabout86timesmorethanatonofCO2.Asaresult,methanehasbeenresponsiblefor23%oftheriseintemperaturessincepre-industrialtimes.Carbondioxidegetsmostoftheattention,butunlessmeth...
Methane (CH4) is the most abundant organic compound in the Earth's atmosphere, where it acts as a greenhouse gas and thus has implications for global climate change. In order to completely understand the effect of methane hydrate melting on the global climate change, we present a theoretical ...
Methane stays in the atmosphere for only about nine years, he added. “If you start reducing methane emissions now, you can start having a short-term effect on . . . reducing the drivers of climate change.” Oil and gas production is another source of methane, the key compound ...
We used a fully coupled chemistry鈥揷limate model (version 3 of the Whole Atmosphere Community Climate Model, WACCM3) to investigate the effect of methane (CH4) emission increases, especially in East Asia and North America, on atmospheric temperature, circulation and ozone (O3). We show that ...
Methane mixing ratios of 100300 ppm in the Proterozoic atmosphere (0.752.3 Ga) would have been sufficient to offset the climatic effects of the faint early sun and maintain the warm climate during those 1.5 b.y. The major argument against this type of the atmosphere is the sh...
Wetlands are the most productive natural ecosystems in the world, and methane (CH4) emissions from wetlands are a significant source of CH4 to the atmosphere. We estimated CH4 emissions from wetlands in China, and analyzed the influence of wetland type and climate zone on CH4 emission. The resu...
Even significant releases of anthropogenic carbon dioxide and methane into the atmosphere do not change average parameters of the Earth's heat regime and have no essential effect on the Earth's climate. Thus, petroleum production and other anthropogenic activities resulting in accumulation of additional...