scholarly journals Estimation of methane emission factor for enteric fermentation of growing-finishing Hanwoo steers using the IPCC Tier 2 approach

2015 ◽  
Author(s):  
Namchul Jo ◽  
Jongnam Kim ◽  
Seongwon Seo
Keyword(s):  
Methane Emission ◽  
Emission Factor ◽  
Ghg Emissions ◽  
Mitigation Strategy ◽  
Accurate Estimation ◽  
Parameter Estimates ◽  
Tier 2 ◽  
Enteric Fermentation ◽  
Significant Difference ◽  
Tier 1

Enteric methane (CH4) production by cattle is one of the major sources of greenhouse gas (GHG) emissions in the livestock sector. In order to develop a national GHG inventory and establish a mitigation strategy for GHG emissions from livestock production, accurate estimation of enteric CH4 production by cattle is required. In this regard, the Tier 2 method in the Intergovernmental Panel on Climate Change (IPCC) guidelines is the most widely used. The objective of this study was to estimate and evaluate the CH4 emission factor (MEF; kg CH4/head/year) for enteric fermentation using the IPCC Tier 2 method in Hanwoo steers, a dominant beef production species in Korea raised in a unique feeding system (e.g., a duration of > 16 months in a feedlot). Methane emission factor for enteric fermentation was estimated using the IPCC Tier 2 method (T2) on Korea- and Hanwoo-specific data obtained from the literature. The MEF values were also estimated and compared using the IPCC Tier 1 (T1), the IPCC Tier 2 methodology with estimated gross energy GE intake based on actual dry matter intake (T2DMI), and the Japanese Tier 3 method (JT3). JT3 was chosen due to the similarity in the beef cattle production system between the two countries. Estimated MEF using T2 were 43.4, 33.9, and 36.2 kg CH4/head/year for the growing, finishing, and overall period, respectively. The overall MEF estimated using T2 was 23% lower than the estimate by T1 (47.0 kg CH4/head/year). There were significant differences in the estimated MEF for enteric fermentation of Hanwoo steers among the T2, T2DMI, and JT3 methods. JT3 estimated the highest values in all periods possibly due to overestimation of the conversion ratio of feed energy to CH4. No significant difference was found in the overall MEF of Hanwoo steers between T2 and T2DMI. However, T2DMI estimated 8% higher and 14% lower MEF than T2 for the growing and finishing period, respectively, mainly because the IPCC Tier 2 model significantly over-predicts the GE intake of Hanwoo steers at the high level of intake. The IPCC Tier 2 methodology is preferred to IPCC Tier 1 in estimating the MEF for enteric fermentation of Hanwoo steers, and the DMI model for Japanese cattle can be used to predict DMI of Hanwoo steers. In order to reduce the uncertainty of the estimates and search for a better mitigation strategy, however, development of a country-specific methodology and parameter estimates for enteric CH4 production of Hanwoo is required.

scholarly journals Estimation of methane emission factor for enteric fermentation of growing-finishing Hanwoo steers using the IPCC Tier 2 approach

2015 ◽  
Author(s):  
Namchul Jo ◽  
Jongnam Kim ◽  
Seongwon Seo
Keyword(s):  
Methane Emission ◽  
Emission Factor ◽  
Ghg Emissions ◽  
Mitigation Strategy ◽  
Accurate Estimation ◽  
Parameter Estimates ◽  
Tier 2 ◽  
Enteric Fermentation ◽  
Significant Difference ◽  
Tier 1

Enteric methane (CH4) production by cattle is one of the major sources of greenhouse gas (GHG) emissions in the livestock sector. In order to develop a national GHG inventory and establish a mitigation strategy for GHG emissions from livestock production, accurate estimation of enteric CH4 production by cattle is required. In this regard, the Tier 2 method in the Intergovernmental Panel on Climate Change (IPCC) guidelines is the most widely used. The objective of this study was to estimate and evaluate the CH4 emission factor (MEF; kg CH4/head/year) for enteric fermentation using the IPCC Tier 2 method in Hanwoo steers, a dominant beef production species in Korea raised in a unique feeding system (e.g., a duration of > 16 months in a feedlot). Methane emission factor for enteric fermentation was estimated using the IPCC Tier 2 method (T2) on Korea- and Hanwoo-specific data obtained from the literature. The MEF values were also estimated and compared using the IPCC Tier 1 (T1), the IPCC Tier 2 methodology with estimated gross energy GE intake based on actual dry matter intake (T2DMI), and the Japanese Tier 3 method (JT3). JT3 was chosen due to the similarity in the beef cattle production system between the two countries. Estimated MEF using T2 were 43.4, 33.9, and 36.2 kg CH4/head/year for the growing, finishing, and overall period, respectively. The overall MEF estimated using T2 was 23% lower than the estimate by T1 (47.0 kg CH4/head/year). There were significant differences in the estimated MEF for enteric fermentation of Hanwoo steers among the T2, T2DMI, and JT3 methods. JT3 estimated the highest values in all periods possibly due to overestimation of the conversion ratio of feed energy to CH4. No significant difference was found in the overall MEF of Hanwoo steers between T2 and T2DMI. However, T2DMI estimated 8% higher and 14% lower MEF than T2 for the growing and finishing period, respectively, mainly because the IPCC Tier 2 model significantly over-predicts the GE intake of Hanwoo steers at the high level of intake. The IPCC Tier 2 methodology is preferred to IPCC Tier 1 in estimating the MEF for enteric fermentation of Hanwoo steers, and the DMI model for Japanese cattle can be used to predict DMI of Hanwoo steers. In order to reduce the uncertainty of the estimates and search for a better mitigation strategy, however, development of a country-specific methodology and parameter estimates for enteric CH4 production of Hanwoo is required.

Methane emissions from enteric fermentation in Alberta’s beef cattle population

2005 ◽  
Vol 85 (4) ◽  
pp. 501-512 ◽  
Author(s):  
J. A. Basarab ◽  
E. K. Okine ◽  
V. S. Baron ◽  
T. Marx ◽  
P. Ramsey ◽  
...  
Keyword(s):  
Beef Cattle ◽  
Methane Emission ◽  
Ghg Emissions ◽  
Beef Cows ◽  
Methane Emissions ◽  
Emission Factors ◽  
Tier 2 ◽  
Cattle Population ◽  
Enteric Fermentation ◽  
Canadian Research

This study determined methane emissions from enteric fermentation in Alberta’s beef cattle population by using three methodologies: (1) Intergovernmental Panel on Climate Change (IPCC), Tier 2 guidelines for cattle, (2) actual methane emission factors, expressed as a percentage of gross energy intake, from Canadian research trials and; (3) CowBytes© plus the basic equation developed by Blaxter and Clapperton (1965). Methane emissions, in carbon dioxide equivalents (CO2-E), from Alberta’s beef cattle were determined for 1990, 1996 and 2001. Census of Agriculture numbers for Alberta (Statistics Canada; www.statcan.com) were used and beef cattle were subdivided into 31 distinct categories based on animal type, physiological status, gender, weight, growth rate, activity level and age. Emission of greenhouse gases (GHG) from Alberta ’s beef cattle population, based on IPCC Tier 2 guidelines, were 4.93, 6.57 and 7.01 Mt CO2-E yr-1 in 1990, 1996 and 2001, respectively. Emissions based on methane emission factors from Canadian research trials were 6.23, 8.26 and 8.77 Mt CO2-E yr-1 in 1990, 1996 and 2001, respectively. Estimated methane emissions based on CowBytes© and Blaxter and Clapperton’s (1965) equation were 6.24, 8.35 and 8.94 Mt CO2-E yr-1 in 1990, 1996 and 2001, respectively. The IPCC Tier 2 values were 25.2–26.5% lower than the GHG emissions calculated using emission factors from western Canadian research and 26.7–27.6% lower than GHG emissions calculated from CowBytes© and Blaxter and Clapperton’s equation. IPCC Tier 1 values, which were calculated by multiplying total beef cattle in Alberta by four single value emission factors (beef cows = 72 kg CH4 yr-1; bulls = 75 kg CH4 yr-1; replacement heifers = 56 kg CH4 yr-1; calves, steer and heifer calves for slaughter = 47 kg CH4 yr-1), were 4.83, 6.40 and 6.83 Mt CO2-E in 1990, 1996 and 2001, respectively. Thus, IPCC Tier 1 GHG emissions from enteric fermentation in beef cattle were 2.0–2.7, 28.6–29.1 and 29.2–31.0% lower than those calculated from IPCC Tier 2, western Canadian research trials, and CowBytes© plus Blaxter and Clapperton’s equation, respectively. These results reflect the uncertainty associated with estimating methane emissions from enteric fermentation in cattle and suggest that further research is required to improve the accuracy of methane emissions, particularly for beef cows in their second and third trimester of pregnancy and fed in confinement. They also indicate that a more robust methodology may be to combine CowBytes© predicted dry matter intake with regional specific methane emission factors, where methane loss is expressed as a percentage of gross energy intake. Key words: Cattle, enteric fermentation, greenhouse gas, methane

The Role of Air–Sea Coupling in Seasonal Prediction of Asia–Pacific Summer Monsoon Rainfall

2013 ◽  
Vol 26 (15) ◽  
pp. 5689-5697 ◽  
Author(s):  
Jieshun Zhu ◽  
Jagadish Shukla
Keyword(s):  
Summer Monsoon ◽  
Monsoon Rainfall ◽  
Coupled Model ◽  
Summer Monsoon Rainfall ◽  
Asia Pacific ◽  
Tier 2 ◽  
Significant Difference ◽  
Tier 1 ◽  
Mean Square Errors

Abstract This study examines the role of the air–sea coupled process in the seasonal predictability of Asia–Pacific summer monsoon rainfall by comparing seasonal predictions from two carefully designed model experiments: tier 1 (fully coupled model) and tier 2 (AGCM with prescribed SSTs). In these experiments, an identical AGCM is used in both tier 1 and tier 2 predictions; the daily mean SSTs from tier 1 coupled predictions are prescribed as a boundary condition in tier 2 predictions. Both predictions start in April from 1982 to 2009, with four ensemble members for each case. The model used is the Climate Forecast System, version 2 (CFSv2), the current operational climate prediction model for seasonal-to-interannual prediction at the National Centers for Environmental Prediction (NCEP). Comparisons indicate that tier 2 predictions produce not only higher rainfall biases but also unrealistically high rainfall variations in the tropical western North Pacific (TWNP) and some coastal regions as well. While the prediction skill in terms of anomaly correlations does not present a significant difference between the two types of predictions, the root-mean-square errors (RMSEs) are clearly larger over the above-mentioned regions in the tier 2 prediction. The reduced RMSE skills in the tier 2 predictions are due to the lack of a coupling process in AGCM-alone simulations, which, particularly, results in an unrealistic SST–rainfall relationship over the TWNP region. It is suggested that for a prediction of summer monsoon rainfall over the Asia–Pacific region, it is necessary to use a coupled atmosphere–ocean (tier 1) prediction system.

scholarly journals Methane emission factors for enteric fermentation in beef cattle using IPCC Tier-2 method in Indonesia

2016 ◽  
Vol 21 (2) ◽  
pp. 101 ◽  
Author(s):  
Yeni Widiawati ◽  
M.N. Rofiq ◽  
B. Tiesnamurti
Keyword(s):  
Beef Cattle ◽  
Methane Emission ◽  
Energy Content ◽  
Emission Factors ◽  
Tier 2 ◽  
Cattle Population ◽  
Enteric Fermentation ◽  
Agriculture Sector ◽  
Enteric Methane ◽  
Country Specific

<p class="abstrak2">Methane emission from enteric is a sub-category considered under the Agriculture sector greenhouse gas emissions by UNFCCC, thus Indonesia developed calculation on enteric CH<sub>4</sub> EF for ruminant using Tier-2 method as country-specific emission factors (EF). Indonesia has huge amount of beef cattle population, which contributes significant amount to national enteric methane emission. The aim of this study was to estimate enteric methane EF for beef cattle in Indonesia using IPCC Tier-2 method.  The EF generated from this study is then used to estimate the methane emitted from beef cattle. Data on beef cattle population was obtained from BPS, data on energy content of feed, feed intake and digestibility were compiled from laboratory analysis and published paper. Equations were adopted and followed the instruction of IPCC 2006. Local cattle has different CH<sub>4</sub> EF among each sub-category, which are  ranging from 18.18 to 55.89 Kg head-1 yr-1, with the average of 36.75  head-1 yr-1. Imported beef cattle has lower  CH<sub>4</sub> EF (25.49 kg head-1 yr-1) than the average for local beef cattle. Overall, the national CH<sub>4</sub> EF of beef cattle calculated by using IPCC Tier-2 method in Indonesia is 33.14 head-1 yr-1. The value is lower than default EF from IPCC for Asia country (47 kg head-1 yr-1). The conclusion is enteric CH<sub>4</sub> EF for beef cattle in Indonesia calculated using Tier-2 method shows the real livestock system in Indonesia condition. Further research needed to be addressed are calculation of EFs for various breeds and feeding systems, since large variations of breeds and types of feed among provinces in Indonesia.</p>

scholarly journals Developing Country-Specific Methane Emission Factors and Carbon Fluxes from Enteric Fermentation in South Korean Dairy Cattle Production

2021 ◽  
Vol 13 (16) ◽  
pp. 9133
Author(s):  
Ridha Ibidhi ◽  
Tae-Hoon Kim ◽  
Rajaraman Bharanidharan ◽  
Hyun-June Lee ◽  
Yoo-Kyung Lee ◽  
...  
Keyword(s):  
Climate Change ◽  
Dairy Cattle ◽  
Ghg Emissions ◽  
Emission Factors ◽  
Enteric Fermentation ◽  
Ch4 Emissions ◽  
South Korean ◽  
Tier 1 ◽  
Cattle Farming ◽  
Country Specific

Dairy cattle farming contributes significantly to greenhouse gas (GHG) emissions through methane (CH4) from enteric fermentation. To complement global efforts to mitigate climate change, there is a need for accurate estimations of GHG emissions using country-specific emission factors (EFs). The objective of this study was to develop national EFs for the estimation of CH4 emissions from enteric fermentation in South Korean dairy cattle. Information on dairy cattle herd characteristics, diet, and management practices specific to South Korean dairy cattle farming was obtained. Enteric CH4 EFs were estimated according to the 2019 refinement of the 2006 Intergovernmental Panel on Climate Change (IPCC) using the Tier 2 approach. Three animal subcategories were considered according to age: milking cows >2 years, 650 kg body weight (BW); heifers 1–2 years, 473 kg BW; and growing animals <1 year, 167 kg BW. The estimated enteric CH4 EFs for milking cows, heifers, and growing animals, were 139, 83, and 33 kg/head/year, respectively. Currently, the Republic of Korea adopts the Tier 1 default enteric CH4 EFs from the North America region for GHG inventory reporting. Compared with the generic Tier 1 default EF of 138 (kg CH4/head/year) proposed by the 2019 refinement to the 2006 IPCC guidelines for high-milking cows, our suggested value for milking cows was very similar (139 kg CH4 /head/year) and different to heifers and growing animals EFs. In addition, enteric CH4 EFs were strongly correlated with the feed digestibility, level of milk production, and CH4 conversion rate. The adoption of the newly developed EFs for dairy cattle in the next national GHG inventory would lead to a potential total GHG reduction from the South Korean dairy sector of 97,000 tons of carbon dioxide-equivalent per year (8%). The outcome of this study underscores the importance of obtaining country-specific EFs to estimate national enteric CH4 emissions, which can further support the assessment of mitigation actions.

Estimates of enteric methane emissions from cattle in Canada using the IPCC Tier-2 methodology

2007 ◽  
Vol 87 (3) ◽  
pp. 459-467 ◽  
Author(s):  
K. H. Ominski ◽  
D. A. Boadi ◽  
K. M. Wittenberg ◽  
D. L. Fulawka ◽  
J. A. Basarab
Keyword(s):  
Beef Cattle ◽  
Dairy Cattle ◽  
Methane Emissions ◽  
Emission Factors ◽  
Feeding Strategies ◽  
Tier 2 ◽  
Production Environment ◽  
Enteric Fermentation ◽  
Tier 1 ◽  
Enteric Methane

The objective of this study was to estimate enteric methane (CH4) emissions of the Canadian cattle population using the International Panel on Climate Change (IPCC) Tier-2 methodology. Estimates were then compared with IPCC Tier-1 methodology and data from Canadian research studies (CRS). Animal inventory data for the Canadian beef and dairy cattle herd was obtained from Statistics Canada. Information on cattle performance and feeding practices were obtained from provincial cattle specialists via a survey, as well as various published reports. Methane emissions from dairy and beef cattle in Canada for 2001 were 173 030 t yr-1 or 3.6 Mt CO2 eq. and 763 852 t yr-1 or 16.0 Mt CO2 eq., respectively, using Tier-2 methodology. Emissions for dairy cattle ranged from 708 t yr-1 in Newfoundland to 62 184 t yr-1 in Ontario. Emissions for beef cattle ranged from 191 t yr-1 in Newfoundland to 356 345 t yr-1 in Alberta. The national emission factors (kg CH4 yr-1) using IPCC Tier-2 were 73, 126, 90, 94, 40, 75, 63 and 56 for dairy heifers, dairy cows, beef cows, bulls, calves < 1yr, beef heifer replacements, heifers > 1 yr, and steers > 1yr, respectively. Emission factors (kg CH4 yr-1) for the above classes of cattle using IPCC Tier-1 were 56, 118, 72, 75, 47, 56, 47 and 47, respectively. The values were 15.1% higher to 25.3% lower than those obtained using IPCC Tier-2 methodology. When IPCC Tier-2 emission factors were compared with CRS, they were 12.3% lower to 32.6% higher than those obtained using the Tier-2 methodology. In conclusion, national estimates of enteric emissions from the Canadian cattle industry using Tier-1 and Tier-2 methodologies, as well as CRS, differ depending on the methodology used. Tier-2 methodology does allow for the inclusion of information other than population data, including feeding strategies, as well as duration of time in a given production environment. Additional research is required to establish the extent to which feed energy is converted to methane for those production scenarios for which there is no published data. Key words: IPCC Tier-2, IPCC Tier-1, enteric fermentation, cattle, methane, emission factor, methane conversion rate

scholarly journals 219 Developing country specific enteric methane emission factor of the South Korean dairy cattle production using the 2019 refined IPCC Tier 2 methodology

2020 ◽  
Vol 98 (Supplement_4) ◽  
pp. 157-157
Author(s):  
Tae Hoon Kim ◽  
Ridha Ibidhi ◽  
Yoo-Gyung Lee ◽  
Hyun.June Lee ◽  
Kyoung Hoon Kim
Keyword(s):  
South Korea ◽  
Dairy Cattle ◽  
Greenhouse Gas Emission ◽  
Tier 2 ◽  
Enteric Fermentation ◽  
Ch4 Emissions ◽  
South Korean ◽  
Tier 1 ◽  
Enteric Methane ◽  
Country Specific

Abstract Dairy cattle farming was identified as an important source of enteric methane (CH4) emissions. In order to contribute to the improvement of the national greenhouse gas emission inventory, this work aims to develop emission factors (EF) for CH4 emissions from enteric fermentation in dairy cattle in South Korea. Information on dairy cattle herd characteristics, diet and management practices specific to the Korean dairy cattle population were gathered. EF was estimated according to the 2019 refinement to the 2006 Intergovernmental Panel on Climate Change (IPCC) using the Tier 2 approach. Three animal subcategories were considered: milking cows (650 kg body weight, BW), heifers 1~2 years (473 kg BW) and growing animals &lt; 1 year (167 kg BW). The estimated enteric CH4 EFs for milking cows, heifers 1~2 years, growing animal &lt; 1 year, were 139, 83 and 33 kg/head/year, respectively. South Korea adopted the Tier 1 default enteric CH4 EFs for GHG inventory reporting from the North America region. Compared with the generic Tier 1 default EF of 138 kg CH4/head/year proposed by the 2019 refinement to the 2006 IPCC guidelines for high milking cows, our suggested value is quite similar (139 kg CH4/ head/year). While enteric CH4 EFs values were 23% higher and 49% lower for heifers and growing animals &lt; one year than Tier 1 default EFs values, respectively. In addition, enteric CH4 EF is highly correlated with the level of milk production, feed intake and digestibility and methane conversion factor (%Ym). The outcome of this study underscores the importance of obtaining country-specific EF to estimate national enteric CH4 emissions. Thus, this work is a step forward in the revision of dairy cattle enteric CH4 EF and can further support assessment of mitigation strategies in South Korean livestock farming systems.

scholarly journals Enteric Methane Emission Estimates for the Zimbabwean Sanga Cattle Breeds of Tuli and Mashona

2021 ◽  
Author(s):  
Showman Gwatibaya ◽  
Chrispen Murungweni ◽  
Irvine Mpofu ◽  
Raphael Jingura ◽  
Accadius Tinarwo Tigere ◽  
...  
Keyword(s):  
Methane Emission ◽  
Methane Emissions ◽  
Emission Factors ◽  
Tier 2 ◽  
Cattle Breeds ◽  
Tier 1 ◽  
Enteric Methane ◽  
Gross Energy ◽  
Sanga Cattle ◽  
Enteric Methane Emissions

Abstract The effectiveness of methane mitigation in ruminant livestock production systems depends on the accuracy of estimating methane emission factors and providing accurate emission inventories. Following the Paris Climate agreement, it is recommended that countries adopt the Tier-2 approach for estimating enteric methane emissions from ruminants instead of the Tier-1 approach currently used by most countries. This study sought to provide base line enteric methane emission estimates for the Tuli and Mashona Sanga cattle breeds in Zimbabwe using the IPCC Tier-2 model. Using animal characterization data collected from 412 cattle from Grasslands Research Institute and 406 cattle from Makoholi Research Institute, net energy requirements were estimated. From this and the estimate for digestibility, gross energy intake and dry matter intake were estimated. Gross energy intakes and the estimated methane conversion factor were used to estimate enteric methane emissions. Mean emission factors for Tuli were 45.1, 56, 28.5, 28.4, 20.6kg CH4/head/year for cows, bulls, heifers, steers and calves respectively. For Mashona, they were 47.8, 51.9, 29, 29.1 and 20.7kgCH4/head/year for cows, bulls, heifers, steers and calves respectively. Generally, estimated Tier-2 emission factors were significantly different from the IPCC Tier-1 default emission factors. This study concluded that enteric methane emission factors estimated using the IPCC Tier-2 model offer insights into the controversial use of the default IPCC Tier-1 emission factors.

scholarly journals Development of methane emission factors for enteric fermentation in cattle from Benin using IPCC Tier 2 methodology

animal ◽  
2015 ◽  
Vol 9 (3) ◽  
pp. 526-533 ◽  
Author(s):  
J.B. Kouazounde ◽  
J.D. Gbenou ◽  
S. Babatounde ◽  
N. Srivastava ◽  
S.H. Eggleston ◽  
...  
Keyword(s):  
Methane Emission ◽  
Emission Factors ◽  
Tier 2 ◽  
Enteric Fermentation

scholarly journals EMISI GAS RUMAH KACA (GRK) DARI PEMBAKARAN TERBUKA SAMPAH RUMAH TANGGA MENGGUNAKAN MODEL IPCC

2019 ◽  
Vol 15 (1) ◽  
pp. 65-76
Author(s):  
Jatmiko Wahyudi
Keyword(s):  
Rural Areas ◽  
Ghg Emissions ◽  
Secondary Data ◽  
Primary Data ◽  
Tier 2 ◽  
Group Discussions ◽  
Open Burning ◽  
Environment And Health ◽  
Tier 1 ◽  
Negative Impacts

ENGLISHOpen burning is one of methods to manage municipal solid waste in particular in rural areas.  On one hand, open burning is easy and cheap for waste management to eliminate waste. On the other hand, burning of waste causes adverse impacts on the environment and health. One of the negative impacts of open burning is greenhouse gas (GHG) emission causing global warming. This study aimed to calculate and to compare GHG emissions from open burning of MSW in Pati Regency using Tier 1 and Tier 2 of IPCC method. Primary data was obtained through focus group discussions while secondary data was obtained through literature studies. The results showed that GHG emissions from waste combustion in Pati Regency based on Tier 1 and Tier 2 calculations indicating an increase during the period 2013-2017. The average of GHG emissions which is calculated by using Tier 1 is 5.18 GgCO2eq/year. This means it is lower than the average GHG emissions which are calculated by Tier 2, namely 33.86 GgCO2eq / year. INDONESIAPembakaran sampah secara terbuka merupakan salah satu alternatif pengelolaan sampah yang banyak dipilih oleh masyarakat khususnya perdesaan. Di satu sisi, pembakaran sampah merupakan metode pengelolaan sampah yang mudah dan murah untuk menghilangkan sampah. Di sisi lain, pembakaran sampah memberikan dampak negatif bagi lingkungan dan kesehatan. Salah satu dampak negatif pembakaran sampah adalah munculnya emisi gas rumah kaca yang menyebabkan terjadinya pemanasan global. Penelitian ini bertujuan untuk menghitung dan membandingkan emisi GRK dari pembakaran sampah permukiman di Kabupaten Pati menggunakan metode yang dikembangkan oleh IPCC dengan 2 tingkat ketelitan yang berbeda yatu Tier 1 dan Tier 2. Data primer diperoleh melalui pelaksanaan diskusi kelompok terfokus sedangkan data sekunder diperoleh melalui studi literatur. Hasil penelitian menunjukkan bahwa emisi GRK dari pembakaran sampah di Kabupaten Pati berdasarkan perhitungan Tier 1 dan Tier 2 menunjukkan peningkatan selama periode 2013-2017. Emisi GRK rata-rata yang dihitung dengan Tier 1 sebesar 5,18 GgCO2eq/tahun. Hal ini berarti lebih rendah dibandingkan dengan  rerata emisi GRK yang dihitung dengan Tier 2 yaitu sebesar 33,86 GgCO2eq/tahun.

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