Articles | Volume 23, issue 8
https://doi.org/10.5194/acp-23-4727-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-23-4727-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
20 Apr 2023
Research article |
| 20 Apr 2023
| 20 Apr 2023
Transport pathways of carbon monoxide from Indonesian fire pollution to a subtropical high-altitude mountain site in the western North Pacific
Saginela Ravindra Babu
CORRESPONDING AUTHOR
Department of Atmospheric Sciences, National Central University, Taoyuan 32001, Taiwan
Chang-Feng Ou-Yang
Department of Atmospheric Sciences, National Central University, Taoyuan 32001, Taiwan
Stephen M. Griffith
Department of Atmospheric Sciences, National Central University, Taoyuan 32001, Taiwan
Shantanu Kumar Pani
Department of Atmospheric Sciences, National Central University, Taoyuan 32001, Taiwan
Steven Soon-Kai Kong
Department of Atmospheric Sciences, National Central University, Taoyuan 32001, Taiwan
Neng-Huei Lin
CORRESPONDING AUTHOR
Department of Atmospheric Sciences, National Central University, Taoyuan 32001, Taiwan
Center for Environmental Monitoring and Technology, National Central University, Taoyuan 32001, Taiwan
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Cited articles
AIRS project: Aqua/AIRS L3 Monthly Standard Physical Retrieval (AIRS-only) 1 degree × 1 degree V7.0, Goddard Earth Sciences Data and Information Services Center (GES DISC), Greenbelt, MD, USA [data set], https://doi.org/10.5067/UBENJB9D3T2H, 2019.
Bowman, K. P.: Transport of carbon monoxide from the tropics to the extratropics, J. Geophys. Res.-Atmos., 111, D02107, https://doi.org/10.1029/2005JD006137, 2006.
Chandra, S., Ziemke, J. R., Duncan, B. N., Diehl, T. L., Livesey, N. J., and Froidevaux, L.:
Effects of the 2006 El Niño on tropospheric ozone and carbon monoxide: implications for dynamics and biomass burning, Atmos. Chem. Phys., 9, 4239–4249, https://doi.org/10.5194/acp-9-4239-2009, 2009.
Chi, K. H., Hung, N. T., Lin, C. Y., Wang, S. H., Ou-Yang, C. F., Lee, C. T., and Lin, N. H.:
Evaluation of Atmospheric PCDD/Fs at Two High-Altitude Stations in Vietnam and Taiwan during Southeast Asia Biomass Burning, Aerosol Air Qual. Res., 16, 2706–2715, https://doi.org/10.4209/aaqr.2015.11.0653, 2016.
Chuang, M. T., Fu, J. S., Lee, C. Te, Lin, N. H., Gao, Y., Wang, S. H., Sheu, G. R., Hsiao, T. C., Wang, J. L., Yen, M. C., Lin, T. H., and Thongboonchoo, N.:
The simulation of long-range transport of biomass burning plume and short-range transport of anthropogenic pollutants to a mountain observatory in east Asia during the 7-SEAS/2010 Dongsha experiment, Aerosol Air Qual. Res., 16, 2933–2949, https://doi.org/10.4209/aaqr.2015.07.0440, 2016.
Cooper, O. R., Gao, R. S., Tarasick, D., Leblanc, T., and Sweeney, C.:
Long-term ozone trends at rural ozone monitoring sites across the United States, 1990–2010, J. Geophys. Res.-Atmos.,117, 1990–2010, https://doi.org/10.1029/2012JD018261, 2012.
Deeter, M. N., Edwards, D. P., Francis, G. L., Gille, J. C., Mao, D., Martínez-Alonso, S., Worden, H. M., Ziskin, D., and Andreae, M. O.:
Radiance-based retrieval bias mitigation for the MOPITT instrument: the version 8 product, Atmos. Meas. Tech., 12, 4561–4580, https://doi.org/10.5194/amt-12-4561-2019, 2019.
Duncan, B. N., Bey, I., Chin, M., Mickley, L. J., Fairlie, T. D., Martin, R. V., and Matsueda, H.:
Indonesian wildfires of 1997: Impact on tropospheric chemistry, J. Geophys. Res., 108, 4458, https://doi.org/10.1029/2002JD003195, 2003a.
Field, R. D., van der Werf, G. R., and Shen, S. S. P.:
Human amplification of drought-induced biomass burning in Indonesia since 1960, Nat. Geosci., 2, 185–188, https://doi.org/10.1038/ngeo443, 2009.
Field, R. D., van der Werf, G. R., Fanin, T., Fetzer, E. J., Fuller, R., Jethva, H., Levy, R., Livesey, N. J., Luo, M., Torres, O., and Worden, H. M.:
Indonesian fire activity and smoke pollution in 2015 show persistent nonlinear sensitivity to El Ni ̃no-induced drought, P. Natl. Acad. Sci. USA, 113, 9204–9209, https://doi.org/10.1073/pnas.1524888113, 2016.
Gelaro, R., McCarty, W., Suárez, M. J., Todling, R., Molod, A., Takacs, L., Randles, C. A., Darmenov, A., Bosilovich, M. G., Reichle, R., Wargan, K., Coy, L., Cullather, R., Draper, C., Akella, S., Buchard, V., Conaty, A., Silva, A. M. da, Gu, W., Kim, G.-K., Koster, R., Lucchesi, R., Merkova, D., Nielsen, J. E., Partyka, G., Pawson, S., Putman, W., Rienecker, M., Schubert, S. D., Sienkiewicz, M., and Zhao, B.:
The Modern-Era Retrospective Analysis for Research and Applications, Version 2 (MERRA-2), J. Climate, 30, 5419–5454, https://doi.org/10.1175/jcli-d-16-0758.1, 2017.
Giglio, L., Schroeder, W., and Justice, C. O.:
The collection 6 MODIS active fire detection algorithm and fire products, Remote Sens. Environ., 178, 31–41, https://doi.org/10.1016/j.rse.2016.02.054, 2016.
Hadley, G.:
Concerning the cause of the general trade-winds, Philos. Trans. R. Soc. Lond., 29, 58–62, https://doi.org/10.1098/rstl.1735.0014, 1735.
Heymann, J., Reuter, M., Buchwitz, M., Schneising, O., Bovensmann, H., Burrows, J. P., Massart, S., Kaiser, J. W., and Crisp, D.:
CO2 emission of Indonesian fires in 2015 estimated from satellite-derived atmospheric CO2 concentrations, Geophys. Res. Lett., 44, 1537–1544, https://doi.org/10.1002/2016gl072042, 2017.
Hsiao, T. C., Ye, W. C., Wang, S. H., Tsay, S. C., Chen, W. N., Lin, N. H., Lee, C. Te, Hung, H. M., Chuang, M. T., and Chantara, S.:
Investigation of the CCN activity, BC and UVBC mass concentrations of biomass burning aerosols during the 2013 BASELInE campaign, Aerosol Air Qual. Res., 16, 2742–2756, https://doi.org/10.4209/aaqr.2015.07.0447, 2016.
Huang, H. Y., Wang, S. H., Huang, W. X., Lin, N. H., Chuang, M. T., da Silva, A. M., and Peng, C. M.: Influence of Synoptic-Dynamic Meteorology on the Long-Range Transport of Indochina Biomass Burning Aerosols, J. Geophys. Res.-Atmos., 125, e2019JD031260, https://doi.org/10.1029/2019JD031260, 2020.
Huang, L., Lin, W., Li, F., Wang, Y., and Jiang, B.:
Climate Impacts of the Biomass Burning in Indochina on Atmospheric Conditions over Southern China, Aerosol Air Qual. Res., 19, 2707–2720, https://doi.org/10.4209/aaqr.2019.01.0028, 2019.
Huijnen, V., Wooster, M. J., Kaiser, J. W., Gaveau, D. L. A., Flemming, J., Parrington, M., Inness, A., Murdiyarso, D., Main, B., and van Weele, M.:
Fire carbon emissions over maritime southeast Asia in 2015 largest since 1997, Sci. Rep.-UK, 6, 26886, https://doi.org/10.1038/srep26886, 2016.
IPCC: Climate Change 2013: The Physical Science Basis, in: Contribution of Working Group I to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change, edited by: Stocker, T. F., Qin, D., Plattner, G.-K., Tignor, M., Allen, S. K., Boschung, J., Nauels, A., Xia, Y., Bex, V., and Midgley, P. M., Cambridge University Press, Cambridge, UK and New York, NY, USA, https://doi.org/10.1017/CBO9781107415324, 2013.
Lin, C. C., Chen, W. N., Loftus, A. M., Lin, C. Y., Fu, Y. T., Peng, C. M., and Yen, M. C.:
Influences of the long-range transport of biomass-burning pollutants on surface air quality during 7-SEAS field campaigns, Aerosol Air Qual. Res., 17, 2595–2607, https://doi.org/10.4209/aaqr.2017.08.0273, 2017.
Lin, C.-Y., Hsu, H.-M., Lee, Y. H., Kuo, C. H., Sheng, Y.-F., and Chu, D. A.:
A new transport mechanism of biomass burning from Indochina as identified by modeling studies, Atmos. Chem. Phys., 9, 7901–7911, https://doi.org/10.5194/acp-9-7901-2009, 2009.
Lin, N.-H., Tsay, S.-C., Maring, H. B., Yen, M.-C., Sheu, G.-R., Wang, S.-H., Chi, K. H., Chuang, M.-T., Ou-Yang, C.-F., Fu, J. S., Reid, J. S., Lee, C.-T., Wang, L.-C., Wang, J.-L., Hsu, C. N., Sayer, A. M., Holben, B. N., Chu, Y.-C., Nguyen, X. A., Sopajaree, K., Chen, S.-J., Cheng, M.-T., Tsuang, B.-J., Tsai, C.-J., Peng, C.-M., Schnell, R. C., Conway, T., Chang, C.-T., Lin, K.-S., Tsai, Y. I., Lee, W.-J., Chang, S.-C., Liu, J.-J., Chiang, W.-L., Huang, S.-J., Lin, T.-H., and Liu, G.-R.: An overview of regional experiments on biomass burning aerosols and related pollutants in Southeast Asia: From BASE-ASIA and the Dongsha Experiment to 7-SEAS, Atmos. Environ., 78, 1–19, https://doi.org/10.1016/j.atmosenv.2013.04.066, 2013.
Logan, J. A., Megretskaia, I., Nassar, R., Murray, L. T., Zhang, L., Bowman, K. W., Worden, H. M., and Luo, M.:
Effects of the 2006 El Niño on tropospheric composition as revealed by data from the Tropospheric Emission Spectrometer (TES), Geophys. Res. Lett., 35, 1–5, https://doi.org/10.1029/2007GL031698, 2008.
Matsueda, H. and Inoue, H. Y.:
Aircraft measurements of trace gases between Japan and Singapore in October of 1993, 1996, and 1997, Geophys. Res. Lett., 26, 2413–2416, https://doi.org/10.1029/1999GL900089, 1999.
Matsueda, H., Inoue, H. Y., and Ishii, M.:
Aircraft observation of carbon dioxide at 8–13 km altitude over the western Pacific from 1993 to 1999, Tellus B, 54, 1–21, https://doi.org/10.1034/j.1600-0889.2002.00304.x, 2002.
Matsueda, H., Buchholz, R. R., Ishijima, K., Worden, H. M., Hammerling, D., and Machida, T.:
Interannual Variation of Upper Tropospheric CO over the Western Pacific Linked with Indonesian Fires, SOLA, 15, 205–210, https://doi.org/10.2151/sola.2019-037, 2019.
McMillan, W. W., Barnet, C., Strow, L., Chahine, M. T., McCourt, M. L., Warner, J. X., Novelli, P. C., Korontzi, S., Maddy, E. S., and Datta, S.: Daily global maps of carbon monoxide from NASA's Atmospheric Infrared Sounder, Geophys. Res. Lett., 32, L11801, https://doi.org/10.1029/2004GL021821, 2005.
McMillan, W. W., Evans, K. D., Barnet, C. D., Maddy, E. S., Sachse, G. W., and Diskin, G. S.: Validating the AIRS Version 5 CO retrieval with DACOM in situ measurements during INTEX-A and -B, IEEE T. Geosci. Remote, 49, 2802–2813, https://doi.org/10.1109/TGRS.2011.2106505, 2011.
Nara, H., Tanimoto, H., Nojiri, Y., Mukai, H., Zeng, J., Tohjima, Y., and Machida, T.:
CO emissions from biomass burning in South-east Asia in the 2006 El Nino year: shipboard and AIRS satellite observations, Environ. Chem., 8, 213–223, https://doi.org/10.1071/EN10113, 2011.
NASA: Measurements Of Pollution In The Troposphere, https://asdc.larc.nasa.gov/project/MOPITT (last access: 31 March 2023), 2023a.
NASA: GES DISC, https://disc.gsfc.nasa.gov (last access: 31 March 2023), 2023b.
NASA: Active Fire Data, https://firms.modaps.eosdis.nasa.gov/active_fire/ (last access: 31 March 2023), 2023c.
Nassar, R., Logan, J. A., Megretskaia, I. A., Murray, L. T., Zhang, L., and Jones, D. B. A.:
Analysis of tropical tropospheric ozone, carbon monoxide, and water vapor during the 2006 El Niño using TES observations and the GEOS Chem model, J. Geophys. Res.-Atmos., 114, D17304, https://doi.org/10.1029/2009JD011760, 2009.
NOAA: Niño 3.4 SST Index, https://psl.noaa.gov/gcos_wgsp/Timeseries/Nino34/ (last access: 31 March 2023), 2023a.
NOAA: Dipole Mode Index (DMI), https://psl.noaa.gov/gcos_wgsp/Timeseries/DMI/ (last access: 31 March 2023), 2023b.
Ou-Yang, C. F., Lin, N. H., Sheu, G. R., Lee, C. T., and Wang, J. L.: Seasonal and diurnal variations of ozone at a high-altitude mountain baseline station in East Asia, Atmos. Environ., 46, 279–288, https://doi.org/10.1016/j.atmosenv.2011.09.060, 2012.
Ou-Yang, C. F., Lin, N. H., Lin, C. C., Wang, S. H., Sheu, G. R., Lee, C. Te, Schnell, R. C., Lang, P. M., Kawasato, T., and Wang, J. L.:
Characteristics of atmospheric carbon monoxide at a high-mountain background station in East Asia, Atmos. Environ., 89, 613–622, https://doi.org/10.1016/j.atmosenv.2014.02.060, 2014.
Ou-Yang, C. F., Ravindra Babu, S., Lee, J.-R., Yen, M.-C., Griffith, S. M., Lin, C.-C., Chang, S.-C., and Lin, N.-H.:
Detection of stratospheric intrusion events and their role in ozone enhancement at a mountain background site in sub-tropical East Asia, Atmos. Environ., 268, 118779, https://doi.org/10.1016/j.atmosenv.2021.118779, 2022.
Pan, X., Chin, M., Ichoku, C. M., and Field, R. D.:
Connecting Indonesian fires and drought with the type of El Niño and phase of the Indian Ocean dipole during 1979–2016, J. Geophys. Res.-Atmos., 123, 1–15, https://doi.org/10.1029/2018JD028402, 2018.
Pani, S. K., Wang, S. H., Lin, N. H., Lee, C. Te, Tsay, S. C., Holben, B. N., Janjai, S., Hsiao, T. C., Chuang, M. T., and Chantara, S.:
Radiative effect of springtime biomass-burning aerosols over northern Indochina during 7-SEAS/BASELInE 2013 campaign, Aerosol Air Qual. Res., 16, 2802–2817, https://doi.org/10.4209/aaqr.2016.03.0130, 2016.
Pani, S. K., Ou-Yang, C.-F., Wang, S.-H., Ogren, J. A., Sheridan, P. J., Sheu, G.-R., and Lin, N.-H. J. A. E.:
Relationship between long-range transported atmospheric black carbon and carbon monoxide at a high-altitude background station in East Asia, Atmos. Environ, 210, 86–99, https://doi.org/10.1016/j.atmosenv.2019.04.053, 2019.
Park, S., Kim, S. W., Lin, N. H., Pani, S. K., Sheridan, P. J., and Andrews, E.:
Variability of Aerosol Optical Properties Observed at a Polluted Marine (Gosan, Korea) and a High-altitude Mountain (Lulin, Taiwan) Site in the Asian Continental Outflow, Aerosol Air Qual. Res., 19, 1283, https://doi.org/10.4209/aaqr.2018.11.0416, 2019.
Parker, R. J., Boesch, H., Wooster, M. J., Moore, D. P., Webb, A. J., Gaveau, D., and Murdiyarso, D.:
Atmospheric CH4 and CO2 enhancements and biomass burning emission ratios derived from satellite observations of the 2015 Indonesian fire plumes, Atmos. Chem. Phys., 16, 10111–10131, https://doi.org/10.5194/acp-16-10111-2016, 2016.
Pochanart, P., Akimoto, H., Kajii, Y., and Sukasem, P.: Carbon monoxide, regional-scale, and biomass burning in tropical continental Southeast Asia: Observations in rural Thailand, J. Geophys. Res.-Atmos., 108, 4552, https://doi.org/10.1029/2002JD003360, 2003.
Ravindra Babu, S. and Liou, Y. A.:
Tropical tropopause layer evolution during 2015–16 El Niño event inferred from COSMIC RO measurements, J. Atmos. Sol.-Terr. Phy., 212, 105507, https://doi.org/10.1016/j.jastp.2020.105507, 2021.
Ravindra Babu, S., VenkataRatnam, M., Basha, G., Liou, Y.-A., and Narendra Reddy, N.:
Large Anomalies in the Tropical Upper Troposphere Lower Stratosphere (UTLS) Trace Gases Observed during the Extreme 2015–16 El Niño Event by Using Satellite Measurements, Remote Sens.-Basel, 11, 687, https://doi.org/10.3390/rs11060687, 2019.
Ravindra Babu, S., Venkat Ratnam, M., Basha, G., Pani, S. K., and Lin, N.-H.:
Structure, dynamics, and trace gas variability within the Asian summer monsoon anticyclone in the extreme El Niño of 2015–2016, Atmos. Chem. Phys., 21, 5533–5547, https://doi.org/10.5194/acp-21-5533-2021, 2021.
Ravindra Babu, S., Nguyen, L. S. P., Sheu, G.-R., Griffith, S. M., Pani, S. K., Huang, H.-Y., and Lin, N.-H.:
Long-range transport of La Soufrière volcanic plume to the western North Pacific: Influence on atmospheric mercury and aerosol properties, Atmos. Environ., 268, 118806, https://doi.org/10.1016/j.atmosenv.2021.118806, 2022a.
Ravindra Babu, S., Pani, S. K., Ou-Yang, C. F., Lin, N. H.:
Impact of 21 June 2020 Annular Solar Eclipse on Meteorological Parameters, O3 and CO at a High Mountain Site in Taiwan, Aerosol Air Qual. Res., 22, 220248, https://doi.org/10.4209/aaqr.220248, 2022b.
Reid, J. S., Hyer, E. J., Johnson, R., Holben, B. N., Yokelson, R. J., Zhang, J., Campbell, J. R., Christopher, S. A., Di Girolamo, L., Giglio, L., Holz, R. E., Kearney, C., Miettinen, J., Reid, E. A., Turk, F. J., Wang, J., Xian, P., Zhao, G., Balasubramanian, R., Chew, B. N., Janai, S., Lagrosas, N., Lestari, P., Lin, N.-H., Mahmud, M., Nguyen, A. X., Norris, B., Oahn, N. T. K., Oo, M., Salinas, S. V., Welton, E. J., Liew, S. C.:
Observing and understanding the Southeast Asian aerosol system by remote sensing: An initial review and analysis for the Seven Southeast Asian Studies (7SEAS) program, Atmos. Res., 122, 403–468, https://doi.org/10.1016/j.atmosres.2012.06.005, 2013.
Sheu, G.-R., Lin, N.-H., Wang, J.-L., and Lee, C.-T.:
Lulin Atmospheric Background Station: A New High-Elevation Baseline Station in Taiwan, J-STAGE, 24, 84–89, https://doi.org/10.11203/jar.24.84, 2009.
Tsay, S. C., Maring, H. B., Lin, N. H., Buntoung, S., Chantara, S., Chuang, H. C., Gabriel, P. M., Goodloe, C. S., Holben, B. N., Hsiao, T. C., Christina Hsu, N., Janjai, S., Lau, W. K. M., Lee, C. Te, Lee, J., Loftus, A. M., Nguyen, A. X., Nguyen, C. M., Pani, S. K., Pantina, P., Sayer, A. M., Tao, W. K., Wang, S. H., Welton, E. J., Wiriya, W., and Yen, M. C.:
Satellitesurface perspectives of air quality and aerosol-cloud effects on the environment: An overview of 7-SEAS/BASELInE, Aerosol Air Qual. Res., 16, 2581–2602, https://doi.org/10.4209/aaqr.2016.08.0350, 2016.
van der Werf, G. R., Dempewolf, J., Trigg, S. N., Randerson, J. T., Kasibhatla, P. S., Giglio, L., Murdiyarso, D., Peters, W., Morton, D. C., Collatz, G. J., Dolman, A. J., and DeFries, R. S.:
Climate regulation of fire emissions and deforestation in equatorial Asia, P. Natl. Acad. Sci. USA, 105, 20350–20355, https://doi.org/10.1073/pnas.0803375105, 2008.
van der Werf, G. R., Randerson, J. T., Giglio, L., van Leeuwen, T. T., Chen, Y., Rogers, B. M., Mu, M., van Marle, M. J. E., Morton, D. C., Collatz, G. J., Yokelson, R. J., and Kasibhatla, P. S.:
Global fire emissions estimates during 1997–2016, Earth Syst. Sci. Data, 9, 697–720, https://doi.org/10.5194/essd-9-697-2017, 2017.
Wang, C.: ENSO, Atlantic climate variability, and the Walker and Hadley circulations, in: The Hadley circulation: Present, past and future, Springer, Berlin, 173–202, https://doi.org/10.1007/978-1-4020-2944-8_7, 2004.
Wang, S.-H., Welton, E. J., Holben, B. N., Tsay, S.-C., Lin, N.-H., Giles, D., Stewart, S. A., Janjai, S., Nguyen, X. A., Hsiao, T.-C., Chen, W.-N., Lin, T.-H., Buntoung, S., Chantara, S., and Wiriya, W.:
Vertical Distribution and Columnar Optical Properties of Springtime Biomass-Burning Aerosols over Northern Indochina during 2014 7-SEAS Campaign, Aerosol Air Qual. Res., 15, 2037–2050, https://doi.org/10.4209/aaqr.2015.05.0310, 2015.
Warner, J., Carminati, F., Wei, Z., Lahoz, W., and Attié, J.-L.: Tropospheric carbon monoxide variability from AIRS under clear and cloudy conditions, Atmos. Chem. Phys., 13, 12469–12479, https://doi.org/10.5194/acp-13-12469-2013, 2013.
Warner, J. X., Comer, M. M., Barnet, C. D., McMillan, W. W., Wolf, W., Maddy, E., and Sachse, G.: A Comparison of Satellite Tropospheric Carbon Monoxide Measurements from AIRS and MOPITT During INTEX-A, J. Geophys. Res., 112, D12S17, https://doi.org/10.1029/2006JD007925, 2007.
Worden, H. M., Deeter, M. N., Edwards, D. P., Gille, J. C., Drummond, J. R., and Nedélec, P. P.: Observations of near-surface carbon monoxide from space using MOPITT multispectral retrievals, J. Geophys. Res., 115, D18314, https://doi.org/10.1029/2010JD014242, 2010.
Zellweger, C., Hüglin, C., Klausen, J., Steinbacher, M., Vollmer, M., and Buchmann, B.: Inter-comparison of four different carbon monoxide measurement techniques and evaluation of the long-term carbon monoxide time series of Jungfraujoch, Atmos. Chem. Phys., 9, 3491–3503, https://doi.org/10.5194/acp-9-3491-2009, 2009.
Zhang, L., Li, Q. B., Jin, J., Liu, H., Livesey, N., Jiang, J. H., Mao, Y., Chen, D., Luo, M., and Chen, Y.: Impacts of 2006 Indonesian fires and dynamics on tropical upper tropospheric carbon monoxide and ozone, Atmos. Chem. Phys., 11, 10929–10946, https://doi.org/10.5194/acp-11-10929-2011, 2011.
Short summary
In October 2006 and 2015, extensive fire episodes occurred in Indonesia, releasing an enormous amount of CO emissions. By combining in situ and satellite CO measurements and reanalysis products, we reported plausible transport pathways of CO from Indonesia to the Lulin Atmospheric Background Station (LABS; 23.47° N, 120.87° E; 2862 m a.s.l.) in Taiwan. We identified (i) horizontal transport in the free troposphere and (ii) vertical transport through the Hadley circulation.
In October 2006 and 2015, extensive fire episodes occurred in Indonesia, releasing an enormous...
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