scholarly journals Practical strategies to mitigate ruminant greenhouse gas emissions

2021 ◽  
Author(s):  
Alejandra Ortega ◽  
Mark Tester ◽  
Kyle Lauersen
Keyword(s):  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Mitigation Strategies ◽  
Gas Emissions ◽  
Carbon Neutrality ◽  
Western Asia ◽  
Enteric Methane ◽  
Reduce Emissions ◽  
The Impact ◽  
Pragmatic Strategies

Abstract Livestock contributes to 14.5 percent of global greenhouse gas emissions, with ruminants being the largest contributor through enteric methane emissions. Although several strategies are available to mitigate livestock methane, no consensus exists on which methods are the most effective. Here, we projected by 2050 the impact of the most pragmatic strategies to reduce enteric methane, modelling cattle emissions. The projection shows that supplementing ruminant feed with anti-methanogenic seaweed and converting grassland into silvopasture offer the greatest potential to reduce emissions. A synergic combination of strategies can aid Europe and most of Asia to can reach ruminant carbon neutrality by 2035 and 2038, respectively. However, global cattle CO2-eq emissions will be reduced by no more than 34 percent by 2050, remaining far above the carbon neutrality target. Mitigation strategies alone are insufficient to lower emissions, and reducing the demand for ruminant products is also necessary – particularly in Africa and Western Asia.

scholarly journals Practical strategies to mitigate ruminant greenhouse gas emissions

2021 ◽  
Author(s):  
Alejandra Ortega ◽  
Mark Tester ◽  
Kyle Lauersen
Keyword(s):  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Mitigation Strategies ◽  
Gas Emissions ◽  
Carbon Neutrality ◽  
Livestock Sector ◽  
Western Asia ◽  
Enteric Methane ◽  
Reduce Emissions ◽  
Pragmatic Strategies

Abstract Livestock contributes to 14.5 percent of global greenhouse gas emissions, with ruminants being the largest contributor through enteric methane emissions. Although several mitigation strategies are available to reduce livestock methane, no consensus exists on which methods are the most effective. Here, the mitigation impact of the most pragmatic strategies to reduce enteric methane has been projected to 2050, using cattle emissions as a model. The projection shows that supplementing ruminant feed with anti-methanogenic seaweed and converting grassland into silvopasture offer the greatest potential to reduce emissions. With a synergic combination of strategies, the livestock sector in Europe and most of Asia can reach carbon neutrality by 2035 and 2038, respectively. However, global cattle CO2-eq emissions will be reduced by no more than 34 percent by 2050, remaining far above the carbon neutrality target. Mitigation strategies alone are insufficient to lower emissions, and reducing the demand for ruminant products is also necessary – particularly in Africa and Western Asia.

scholarly journals THE IMPACT OF OCCUPANT BEHAVIOUR ON RESIDENTIAL GREENHOUSE GAS EMISSIONS REDUCTION

2015 ◽  
Vol 10 (4) ◽  
pp. 127-140 ◽  
Author(s):  
Joshua Hetherington ◽  
Astrid Roetzel ◽  
Robert Fuller
Keyword(s):  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Energy Use ◽  
Occupant Behaviour ◽  
Gas Emissions ◽  
Point Temperature ◽  
Set Point ◽  
Heating And Cooling ◽  
Reduce Emissions ◽  
The Impact

In 2011–12, greenhouse gas emissions from the Australian residential sector were 101.6 Mt and are expected to grow by 38% by 2050. In order to reduce these emissions, much emphasis has been placed on increasing the energy efficiency of buildings and appliances. Occupant behaviour, however, is probably the single most significant factor which determines energy use and emissions. This paper describes research undertaken to rank the most common occupant behaviours, based upon their impact on greenhouse gas emissions associated with residential energy use, in an architect-designed house in Australia. The occupant behaviours investigated were changing: the heating and cooling temperature set points, window openings, external blind use and lighting use. Simulations were carried out using Primero and EnergyPlus software. Based on the simulation results of greenhouse gas emissions, the following ranking of overall influence (from most influential to the least) has been determined: external blind use was one of the most effective measures to reduce emissions. Cooling set point temperature was similarly important with the magnitude of impact depending on the set point e.g. a 2°C increase had an impact comparable to the use of external blinds. The impact of the heating set point temperature was also dependent on the set point and overall slightly lower compared to the cooling set point temperature. Lighting use was the least influential parameter in the context of this study.

HOW GREEN IS YOUR FOOTPRINT? THE IMPACT OF GREENHOUSE GAS EMISSIONS ON STRATEGIC PLANNING

2008 ◽  
Vol 2008 (6) ◽  
pp. 783-792 ◽  
Author(s):  
Patricia Scanlan ◽  
Holly Elmendorf ◽  
Hari Santha ◽  
James Rowan
Keyword(s):  
Strategic Planning ◽  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Gas Emissions ◽  
Green Is ◽  
The Impact

Observational Constraints on Past Attributable Warming and Predictions of Future Global Warming

2006 ◽  
Vol 19 (13) ◽  
pp. 3055-3069 ◽  
Author(s):  
Peter A. Stott ◽  
John F. B. Mitchell ◽  
Myles R. Allen ◽  
Thomas L. Delworth ◽  
Jonathan M. Gregory ◽  
...  
Keyword(s):  
Twentieth Century ◽  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Temperature Change ◽  
Greenhouse Warming ◽  
Gas Emissions ◽  
Aerosol Forcing ◽  
Future Global Warming ◽  
Cooling Effects ◽  
The Impact

Abstract This paper investigates the impact of aerosol forcing uncertainty on the robustness of estimates of the twentieth-century warming attributable to anthropogenic greenhouse gas emissions. Attribution analyses on three coupled climate models with very different sensitivities and aerosol forcing are carried out. The Third Hadley Centre Coupled Ocean–Atmosphere GCM (HadCM3), Parallel Climate Model (PCM), and GFDL R30 models all provide good simulations of twentieth-century global mean temperature changes when they include both anthropogenic and natural forcings. Such good agreement could result from a fortuitous cancellation of errors, for example, by balancing too much (or too little) greenhouse warming by too much (or too little) aerosol cooling. Despite a very large uncertainty for estimates of the possible range of sulfate aerosol forcing obtained from measurement campaigns, results show that the spatial and temporal nature of observed twentieth-century temperature change constrains the component of past warming attributable to anthropogenic greenhouse gases to be significantly greater (at the 5% level) than the observed warming over the twentieth century. The cooling effects of aerosols are detected in all three models. Both spatial and temporal aspects of observed temperature change are responsible for constraining the relative roles of greenhouse warming and sulfate cooling over the twentieth century. This is because there are distinctive temporal structures in differential warming rates between the hemispheres, between land and ocean, and between mid- and low latitudes. As a result, consistent estimates of warming attributable to greenhouse gas emissions are obtained from all three models, and predictions are relatively robust to the use of more or less sensitive models. The transient climate response following a 1% yr−1 increase in CO2 is estimated to lie between 2.2 and 4 K century−1 (5–95 percentiles).

Analysis of greenhouse gas emissions from 10 biogas plants within the agricultural sector

2013 ◽  
Vol 67 (6) ◽  
pp. 1370-1379 ◽  
Author(s):  
J. Liebetrau ◽  
T. Reinelt ◽  
J. Clemens ◽  
C. Hafermann ◽  
J. Friehe ◽  
...  
Keyword(s):  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Agricultural Sector ◽  
Nitrous Oxide Emissions ◽  
Life Cycle Assessments ◽  
Gas Emissions ◽  
Biogas Plants ◽  
Reduce Emissions ◽  
Generation Unit

With the increasing number of biogas plants in Germany the necessity for an exact determination of the actual effect on the greenhouse gas emissions related to the energy production gains importance. Hitherto the life cycle assessments have been based on estimations of emissions of biogas plants. The lack of actual emission evaluations has been addressed within a project from which the selected results are presented here. The data presented here have been obtained during a survey in which 10 biogas plants were analysed within two measurement periods each. As the major methane emission sources the open storage of digestates ranging from 0.22 to 11.2% of the methane utilized and the exhaust of the co-generation units ranging from 0.40 to 3.28% have been identified. Relevant ammonia emissions have been detected from the open digestate storage. The main source of nitrous oxide emissions was the co-generation unit. Regarding the potential of measures to reduce emissions it is highly recommended to focus on the digestate storage and the exhaust of the co-generation.

Projecting the Impact of Socioeconomic and Policy Factors on Greenhouse Gas Emissions and Carbon Sequestration in U.S. Forestry and Agriculture

2022 ◽  
Vol 37 ◽  
Author(s):  
Christopher M. Wade ◽  
Justin S. Baker ◽  
Jason P. H. Jones ◽  
Kemen G. Austin ◽  
Yongxia Cai ◽  
...  
Keyword(s):  
Carbon Sequestration ◽  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Gas Emissions ◽  
The Impact
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