Articles | Volume 17, issue 20
https://doi.org/10.5194/acp-17-12573-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/acp-17-12573-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Research article
| 
24 Oct 2017
Research article |
| 24 Oct 2017
Seasonal and diurnal variations in methane and carbon dioxide in the Kathmandu Valley in the foothills of the central Himalayas
Khadak Singh Mahata
Institute for Advanced Sustainability Studies (IASS), Potsdam, Germany
Institute of Earth and Environmental Science, Department of Geo-ecology, University of Potsdam, Potsdam, Germany
Arnico Kumar Panday
International Centre for Integrated Mountain Development (ICIMOD),
Lalitpur, Nepal
Department of Environmental Sciences, University of Virginia, Charlottesville, Virginia, USA
Maheswar Rupakheti
CORRESPONDING AUTHOR
Institute for Advanced Sustainability Studies (IASS), Potsdam, Germany
Himalayan Sustainability Institute (HIMSI), Kathmandu, Nepal
Ashish Singh
Institute for Advanced Sustainability Studies (IASS), Potsdam, Germany
Manish Naja
Aryabhatta Research Institute of Observational Sciences (ARIES),
Nainital, India
Mark G. Lawrence
Institute for Advanced Sustainability Studies (IASS), Potsdam, Germany
Institute of Earth and Environmental Science, Department of Geo-ecology, University of Potsdam, Potsdam, Germany
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Cited
27 citations as recorded by crossref.
- Nitrogenous and carbonaceous aerosols in PM2.5 and TSP during pre-monsoon: Characteristics and sources in the highly polluted mountain valley H. Bhattarai et al. 10.1016/j.jes.2021.06.018
- Variations in surface ozone and carbon monoxide in the Kathmandu Valley and surrounding broader regions during SusKat-ABC field campaign: role of local and regional sources P. Bhardwaj et al. 10.5194/acp-18-11949-2018
- Ground-Based Atmospheric Measurements of CO:CO2 Ratios in Eastern Highland Rim Using a CO Tracer Technique L. Gamage et al. 10.1021/acsearthspacechem.9b00322
- Comparison of Atmospheric CO2, CH4, and CO at Two Stations in the Tibetan Plateau of China M. Guo et al. 10.1029/2019EA001051
- Pre-monsoon submicron aerosol composition and source contribution in the Kathmandu Valley, Nepal B. Werden et al. 10.1039/D2EA00008C
- High concentration of black carbon in northern Pakistan: Characteristics, source apportionment and emission source regions E. ul Haq et al. 10.1016/j.atmosenv.2022.119475
- Submicron Aerosol Composition and Source Contribution across the Kathmandu Valley, Nepal, in Winter B. Werden et al. 10.1021/acsearthspacechem.2c00226
- Observation and analysis of spatiotemporal characteristics of surface ozone and carbon monoxide at multiple sites in the Kathmandu Valley, Nepal K. Mahata et al. 10.5194/acp-18-14113-2018
- Molecular characterization of organic aerosols in the Kathmandu Valley, Nepal: insights into primary and secondary sources X. Wan et al. 10.5194/acp-19-2725-2019
- Reconstructing high-resolution in-situ vertical carbon dioxide profiles in the sparsely monitored Asian monsoon region B. Vogel et al. 10.1038/s43247-023-00725-5
- Short-term effect of COVID-19 lockdowns on atmospheric CO2, CH4 and PM2.5 concentrations in urban environment E. Gulyaev et al. 10.1007/s13762-022-04314-5
- Isotope composition of carbon dioxide and methane in a tropical urban atmosphere K. Carballo-Chaves et al. 10.1080/10256016.2020.1803855
- Anthropogenic changes to the nighttime environment K. Gaston et al. 10.1093/biosci/biad017
- Influence of dataset density on CO2 and CH4 trend calculation I. Pérez et al. 10.1007/s11869-019-00681-0
- Impact of local and regional emission sources on air quality in foothills of the Himalaya during spring 2016: An observation, satellite and modeling perspective M. Mehra et al. 10.1016/j.atmosenv.2019.116897
- Ambient air quality in the Kathmandu Valley, Nepal, during the pre-monsoon: concentrations and sources of particulate matter and trace gases M. Islam et al. 10.5194/acp-20-2927-2020
- Traffic, transport, and vegetation drive VOC concentrations in a major urban area in Texas S. Shrestha et al. 10.1016/j.scitotenv.2022.155861
- Variation of trace gases in Kannur Town, a coastal South Indian city R. CT et al. 10.1016/j.envc.2021.100336
- Wintertime Air Quality across the Kathmandu Valley, Nepal: Concentration, Composition, and Sources of Fine and Coarse Particulate Matter M. Islam et al. 10.1021/acsearthspacechem.2c00243
- Variation Patterns of CO2 and CH4 according to the Measurements in the Surface Atmosphere over Urban and Suburban Areas in 2021–2022 K. Antonov et al. 10.3103/S1068373924050091
- Assessment of biomass burning and fossil fuel contribution to black carbon concentrations in Delhi during winter U. Dumka et al. 10.1016/j.atmosenv.2018.09.033
- Seasonal variability and source apportionment of black carbon over a rural high-altitude and an urban site in western India G. Meena et al. 10.1016/j.apr.2020.10.006
- Effect of lockdown and associated mobility changes amid COVID-19 on air quality in the Kathmandu Valley, Nepal R. Bhandari et al. 10.1007/s10661-023-11949-5
- Light absorption properties of elemental carbon (EC) and water-soluble brown carbon (WS–BrC) in the Kathmandu Valley, Nepal: A 5-year study P. Chen et al. 10.1016/j.envpol.2020.114239
- Determining the key meteorological factors affecting atmospheric CO2 and CH4 using machine learning algorithms at a suburban site in China W. Liu et al. 10.1016/j.uclim.2025.102312
- Effectiveness of vehicle-free zone in reducing air pollution J. Khadgi et al. 10.1007/s13762-020-02977-6
- Aerosol and pollutant characteristics in Delhi during a winter research campaign U. Dumka et al. 10.1007/s11356-018-3885-y
26 citations as recorded by crossref.
- Nitrogenous and carbonaceous aerosols in PM2.5 and TSP during pre-monsoon: Characteristics and sources in the highly polluted mountain valley H. Bhattarai et al. 10.1016/j.jes.2021.06.018
- Variations in surface ozone and carbon monoxide in the Kathmandu Valley and surrounding broader regions during SusKat-ABC field campaign: role of local and regional sources P. Bhardwaj et al. 10.5194/acp-18-11949-2018
- Ground-Based Atmospheric Measurements of CO:CO2 Ratios in Eastern Highland Rim Using a CO Tracer Technique L. Gamage et al. 10.1021/acsearthspacechem.9b00322
- Comparison of Atmospheric CO2, CH4, and CO at Two Stations in the Tibetan Plateau of China M. Guo et al. 10.1029/2019EA001051
- Pre-monsoon submicron aerosol composition and source contribution in the Kathmandu Valley, Nepal B. Werden et al. 10.1039/D2EA00008C
- High concentration of black carbon in northern Pakistan: Characteristics, source apportionment and emission source regions E. ul Haq et al. 10.1016/j.atmosenv.2022.119475
- Submicron Aerosol Composition and Source Contribution across the Kathmandu Valley, Nepal, in Winter B. Werden et al. 10.1021/acsearthspacechem.2c00226
- Observation and analysis of spatiotemporal characteristics of surface ozone and carbon monoxide at multiple sites in the Kathmandu Valley, Nepal K. Mahata et al. 10.5194/acp-18-14113-2018
- Molecular characterization of organic aerosols in the Kathmandu Valley, Nepal: insights into primary and secondary sources X. Wan et al. 10.5194/acp-19-2725-2019
- Reconstructing high-resolution in-situ vertical carbon dioxide profiles in the sparsely monitored Asian monsoon region B. Vogel et al. 10.1038/s43247-023-00725-5
- Short-term effect of COVID-19 lockdowns on atmospheric CO2, CH4 and PM2.5 concentrations in urban environment E. Gulyaev et al. 10.1007/s13762-022-04314-5
- Isotope composition of carbon dioxide and methane in a tropical urban atmosphere K. Carballo-Chaves et al. 10.1080/10256016.2020.1803855
- Anthropogenic changes to the nighttime environment K. Gaston et al. 10.1093/biosci/biad017
- Influence of dataset density on CO2 and CH4 trend calculation I. Pérez et al. 10.1007/s11869-019-00681-0
- Impact of local and regional emission sources on air quality in foothills of the Himalaya during spring 2016: An observation, satellite and modeling perspective M. Mehra et al. 10.1016/j.atmosenv.2019.116897
- Ambient air quality in the Kathmandu Valley, Nepal, during the pre-monsoon: concentrations and sources of particulate matter and trace gases M. Islam et al. 10.5194/acp-20-2927-2020
- Traffic, transport, and vegetation drive VOC concentrations in a major urban area in Texas S. Shrestha et al. 10.1016/j.scitotenv.2022.155861
- Variation of trace gases in Kannur Town, a coastal South Indian city R. CT et al. 10.1016/j.envc.2021.100336
- Wintertime Air Quality across the Kathmandu Valley, Nepal: Concentration, Composition, and Sources of Fine and Coarse Particulate Matter M. Islam et al. 10.1021/acsearthspacechem.2c00243
- Variation Patterns of CO2 and CH4 according to the Measurements in the Surface Atmosphere over Urban and Suburban Areas in 2021–2022 K. Antonov et al. 10.3103/S1068373924050091
- Assessment of biomass burning and fossil fuel contribution to black carbon concentrations in Delhi during winter U. Dumka et al. 10.1016/j.atmosenv.2018.09.033
- Seasonal variability and source apportionment of black carbon over a rural high-altitude and an urban site in western India G. Meena et al. 10.1016/j.apr.2020.10.006
- Effect of lockdown and associated mobility changes amid COVID-19 on air quality in the Kathmandu Valley, Nepal R. Bhandari et al. 10.1007/s10661-023-11949-5
- Light absorption properties of elemental carbon (EC) and water-soluble brown carbon (WS–BrC) in the Kathmandu Valley, Nepal: A 5-year study P. Chen et al. 10.1016/j.envpol.2020.114239
- Determining the key meteorological factors affecting atmospheric CO2 and CH4 using machine learning algorithms at a suburban site in China W. Liu et al. 10.1016/j.uclim.2025.102312
- Effectiveness of vehicle-free zone in reducing air pollution J. Khadgi et al. 10.1007/s13762-020-02977-6
1 citations as recorded by crossref.
Discussed (preprint)
Latest update: 29 Mar 2025
Short summary
The paper provides an overview of CH4, CO2, and CO mixing ratios, including diurnal and seasonal variation, and discusses the association of potential sources and meteorology with the observed temporal variation in the Kathmandu Valley. The study will provide an important dataset for a poorly studied region and will be useful for validating estimates from emission inventories, regional models, and satellite observations and assisting in the design of mitigation measures in the region.
The paper provides an overview of CH4, CO2, and CO mixing ratios, including diurnal and seasonal...
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