نتایج جستجو برای: greenhouse gases ghgs emissions

تعداد نتایج: 120906  

2004
JIANBO CUI CHANGSHENG LI GE SUN CARL TRETTIN

This study reports the linkage between MIKE SHE and Wetland-DNDC for carbon dynamics and greenhouse gases (GHGs) emissions simulation in forested wetland.Wetland-DNDC was modified by parameterizing management measures, refining anaerobic biogeochemical processes, and was linked to the hydrological model – MIKE SHE. As a preliminary application, we simulated the effect of water table position an...

2015
Katherine Lee

In December 2014, the White House Council on Environmental Quality (CEQ) issued for public comment a draft guidance document1 on how federal agencies should evaluate climate change in their analyses under the National Environmental Policy Act .2 The draft guidance does not directly regulate greenhouse gases (GHGs) or climate change, but rather provides agencies with “direction on when and how t...

Journal: :تولید گیاهان زراعی 0
مجید عالیمقام دانشجوی کارشناسی ارشد اگرواکولوژی، دانشگاه علوم کشاورزی و منابع طبیعی گرگان افشین سلطانی استاد گروه زراعت، دانشگاه علوم کشاورزی و منابع طبیعی گرگان ابراهیم زینلی استادیار گروه زراعت، دانشگاه علوم کشاورزی و منابع طبیعی گرگان

application of appropriate agricultural operations is a strategy to reduce energy consumption and greenhouse gas emissions from agricultural productions process. in this study, fuel consumption and greenhouse gases emissions values for each farm operation was evaluated in gorgan and ali-abad katol to soybean product. all activities and production processes about operations were monitored and re...

2009
Ralph Alig Greg Latta Darius Adams Bruce McCarl

a r t i c l e i n f o The forest sector can contribute to atmospheric greenhouse gas reduction, while also providing other environmental, economic, and social benefits. Policy tools for climate change mitigation include carbon-related payment programs as well as laws and programs to impede the loss of agricultural and forest lands to development. Policy makers will base their expectations of th...

2016
V. Proschek G. Kirchengast S. Schweitzer J. S. A. Brooke P. F. Bernath A. Loescher C. B. Thomas J.-G. Wang K. A. Tereszchuk G. González Abad R. J. Hargreaves C. A. Beale J. J. Harrison P. A. Martin

The first ground-based experiment to prove the concept of a novel space-based observation technique for microwave and infrared-laser occultation between low-Earthorbit satellites was performed in the Canary Islands between La Palma and Tenerife. For two nights from 21 to 22 July 2011 the experiment delivered the infrared-laser differential transmission principle for the measurement of greenhous...

An increase in fossil fuel consumption has significantly increased the concentration of greenhouse gases (GHGs). Waste energy recovery can reduce GHGs by reducing fossil fuel consumption. In the FCC unit in refineries, the catalyst is continuously regenerated by burning off the deposited coke with air and a large flux of waste gas with high temperature is generated which is vented into the atmo...

2006
John Reilly Marcus Sarofim Sergey Paltsev Ronald Prinn

First steps toward a broad climate agreement, such as the Kyoto Protocol, have focused on less than global geographic coverage. We consider instead a policy that is less comprehensive in term of greenhouse gases (GHGs), including only the non-CO 2 GHGs, but is geographically comprehensive. Abating non-CO 2 GHGs may be seen as less of a threat to economic development and therefore it may be poss...

Journal: :Journal of environmental quality 2010
Jacob K Andersen Alessio Boldrin Jerker Samuelsson Thomas H Christensen Charlotte Scheutz

Microbial degradation of organic wastes entails the production of various gases such as carbon dioxide (CO(2)), methane (CH(4)), nitrous oxide (N(2)O), and carbon monoxide (CO). Some of these gases are classified as greenhouse gases (GHGs), thus contributing to climate change. A study was performed to evaluate three methods for quantifying GHG emissions from central composting of garden waste. ...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 1998
J E Hansen M Sato A Lacis R Ruedy I Tegen E Matthews

The forcings that drive long-term climate change are not known with an accuracy sufficient to define future climate change. Anthropogenic greenhouse gases (GHGs), which are well measured, cause a strong positive (warming) forcing. But other, poorly measured, anthropogenic forcings, especially changes of atmospheric aerosols, clouds, and land-use patterns, cause a negative forcing that tends to ...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2010
Jennifer A Burney Steven J Davis David B Lobell

As efforts to mitigate climate change increase, there is a need to identify cost-effective ways to avoid emissions of greenhouse gases (GHGs). Agriculture is rightly recognized as a source of considerable emissions, with concomitant opportunities for mitigation. Although future agricultural productivity is critical, as it will shape emissions from conversion of native landscapes to food and bio...

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