Articles | Volume 15, issue 3
https://doi.org/10.5194/acp-15-1555-2015
© Author(s) 2015. 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-15-1555-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Research article
| 
13 Feb 2015
Research article |
| 13 Feb 2015
Scattering and absorption properties of near-surface aerosol over Gangetic–Himalayan region: the role of boundary-layer dynamics and long-range transport
U. C. Dumka
CORRESPONDING AUTHOR
Aryabhatta Research Institute of Observational Sciences, Nainital, India
D. G. Kaskaoutis
Department of Physics, School of Natural Sciences, Shiv Nadar University, Tehsil Dadri, India
M. K. Srivastava
Department of Geophysics, Banaras Hindu University, Varanasi, India
P. C. S. Devara
Amity Centre for Ocean-Atmospheric Science and Technology (ACOAST), Amity University Haryana, Gurgaon (Manesar), India
Cited articles
Adhikary, B., Carmichael G. R., Tang Y., Leung L. R., Qian Y., Schauer J. J., Stone E. A., Ramanathan V., and Ramana M. V.: Characterization of the seasonal cycle of south Asian aerosols: A regional-scale modeling analysis, J. Geophys. Res., 112, D22S22, https://doi.org/10.1029/2006JD008143, 2007.
Anderson, T. L. and Ogren, J. A.: Determining aerosol radiative properties using the TSI 3563 integrating Nephelometer, Aerosol Sci. Tech., 29, 57–69, 1998.
Anderson, T. L., Covert, D. S., Wheeler, J. D., Harris, J. M., Perry, K. D., Trost, B. E., Jaffe, D. J., and Ogren, J. A.: Aerosol Backscatter Fraction and Single Scattering Albedo: Measured values and uncertainties at a coastal station in the pacific North West, J. Geophys. Res., 104, 793–807, 1999.
Andreae, T.W., Andreae, M.O., Ichoku, C., Maenhaut W., Jan, C., Karnieli, A. and Orlovsky, L.: Light scattering by dust and anthropogenic aerosol at a remote site in the Negev desert, Israel, J. Geophys. Res., 107, 4008, https://doi.org/10.1029/2001JD900252, 2002.
Andrews, E., Ogren, J.A., Bonasoni, P., Marinoni A., Cuevas E., Rodríguez S., Sun J. Y., Jaffe D. A., Fischer E.V., Baltensperger U., Weingartner E., Collaud Coen M., Sharma S., Macdonald A. M., Leaitch W. R., Lin N.-H., Laj P., Arsov T. Kalapov I., Jefferson A., and Sheridan P.: Climatology of aerosol radiative properties in the free troposphere, Atmos. Res., 102, 365–393, https://doi.org/10.1016/j.atmosres.2011.08.017, 2011.
Antón, M., Valenzuela, A., Cazorla, A., et al.: Global and diffuse shortwave irradiance during a strong desert dust episode at Granada (Spain), Atmos. Res., 118, 232–239, https://doi.org/10.1016/j.atmosres.2012.07.007, 2012.
Beegum, S., Naseema, M. K., Krishna, B. S., Suresh, S. S. K., Vinoj V., Badarinath, K. V. S., Safai, P. D., and Devara, P. C. S., Singh Sacchidanand, Vinod, Dumka U. C., Pant P.: Spatial distribution of aerosol black carbon over India during pre-monsoon Season, Atmos. Environ., 43, 1071–1078, https://doi.org/10.1016/j.atmosenv.2008.11.042, 2009.
Bergstrom, R. W., Pilewskie, P., Russell, P. B., Redemann, J., Bond, T. C., Quinn, P. K., and Sierau, B.: Spectral absorption properties of atmospheric aerosols, Atmos. Chem. Phys., 7, 5937–5943, https://doi.org/10.5194/acp-7-5937-2007, 2007.
Bollasina M. and Nigam S.: Absorbing aerosols and pre-summer monsoon hydroclimate variability over the Indian subcontinent: The challenge in investigating links, Atmos. Res., 94, 338–344, https://doi.org/10.1016/j.atmosres.2009.06.008, 2009.
Bond, T. C., Anderson, T. L., and Campbell, D.: Calibration and intercomparison of filter-based measurements of visible light absorption by aerosols, Aerosol Sci. Tech., 30, 582–600, 1999.
Bond, T. C.: Spectral dependence of visible light absorption by carbonaceous particles emitted from coal combustion, Geophys. Res. Lett., 28, 4075–4078, 2001.
Boss, E., Pegau W. S., Lee M., Twardowski M., Shybanov E., Korotaev G., and Baratange F.: Particulate backscattering ratio at LEO 15 and its use to study particle composition and distribution, J. Geophys. Res., 109, C01014, https://doi.org/10.1029/2002JC001514, 2004.
Bucci, S., Cagnazzo C., Cairo F., Di Liberto L., and Fierli, F: Aerosol variability and atmospheric transport in the Himalayan region from CALIOP 2007–2010 observations, Atmos. Chem. Phys., 14, 4369–4381, https://doi.org/10.5194/acp-14-4369-2014, 2014.
Carrico, C. M., Kus P., Rood M. J., Quinn P. K., and Bates T. S.: Mixtures of pollution, dust, sea salt, and volcanic aerosol during ACE-Asia: Radiative properties as a function of relative humidity, J. Geophys. Res., 108, 8650, https://doi.org/10.1029/2003JD003405, 2003.
Collaud Coen, M., Weingartner, E., Schaub, D., Hueglin, C., Corrigan, C., Henning, S., Schwikowski, M., and Baltensperger, U.: Saharan dust events at the Jungfraujoch: detection by wavelength dependence of the single scattering albedo and first climatology analysis, Atmos. Chem. Phys., 4, 2465–2480, https://doi.org/10.5194/acp-4-2465-2004, 2004.
Collaud Coen, M., Weingartner, E., Furger, M., Nyeki, S., Prévôt, A. S. H., Steinbacher, M., and Baltensperger, U.: Aerosol climatology and planetary boundary influence at the Jungfraujoch analyzed by synoptic weather types, Atmos. Chem. Phys., 11, 5931–5944, https://doi.org/10.5194/acp-11-5931-2011, 2011.
Decesari, S., Facchini, M. C., Carbone, C., Giulianelli, L., Rinaldi, M., Finessi, E., Fuzzi, S., Marinoni, A., Cristofanelli, P., Duchi, R., Bonasoni, P., Vuillermoz, E., Cozic, J., Jaffrezo, J. L., and Laj, P.: Chemical composition of PM10 and PM1 at the high-altitude Himalayan station Nepal Climate Observatory-Pyramid (NCO-P) (5079 m a.s.l.), Atmos. Chem. Phys., 10, 4583–4596, https://doi.org/10.5194/acp-10-4583-2010, 2010.
Di Girolamo, L., Bond, T. C., Bramer, D., Diner, D. J., Fettinger, F., Kahn, R. A., Martonchik, J. V., Ramana, M. V., Ramanathan, V., and Rasch, P. J.: Analysis of Multi-angle Imaging Spectroradiometer (MISR) aerosol optical depths over greater India during winter 2001–2004, Geophys. Res. Lett., 31, L23115, https://doi.org/10.1029/2004GL021273, 2004.
Dipu, S., Prabha Thara V., Pandithurai G., Dudhia J., Pfister G., Rajesh K., and Goswami B. N.: Impact of elevated aerosol layer on the cloud macrophysical properties prior to monsoon onset, Atmos. Environ., \it 70, 454-467, 2013.
Doherty, S. J., Quinn, P. K., Jefferson, A., Carrico, C. M., Anderson, T. L., and Hegg D.: A comparison and summary of aerosol optical properties as observed in situ from aircraft, ship, and land during ACE-Asia, J. Geophys. Res., 110, D04201, https://doi.org/10.1029/2004JD004964, 2005.
Draxler, R., Stunder B., Rolph G., Stein A., and Taylor A.: HYSPLIT4 user's guide, version 4, report, NOAA, Silver Spring, Md. (available at: www.arl.noaa.gov/documents/reports/hysplit_user_guide.pdf), 2012.
Dumka, U. C. and Kaskaoutis, D. G.: In-situ measurements of aerosol properties and estimates of radiative forcing efficiency over Gangetic–Himalayan region during the GVAX field campaign, Atmos. Environ., 94, 96–105, https://doi.org/10.1016/j.atmosenv.2014.05.021, 2014.
Dumka, U. C., Satheesh, S. K., Pant, P., Hegde, P. and Krishna Moorthy, K.: Surface changes in solar irradiance due to aerosols over central Himalayas, Geophys. Res. Lett., 33, L20809, https://doi.org/10.1029/2006GL027814, 2006.
Dumka, U. C., Krishna Moorthy, K., Satheesh, S. K., Sagar, R., and Pant, P.: Short-period modulations in aerosol optical depths over the central Himalayas: role of mesoscale processes, J. Appl. Meteorol. Clim., 47, 1467–1475, https://doi.org/10.1175/2007JAMC1638.1, 2008.
Dumka, U. C., Krishna Moorthy, K., Kumar, R., Hegde, P., Sagar, R., Pant, P., Singh, N., and Babu, S. S.: Characteristics of aerosol black carbon mass concentration over a high altitude location in the central Himalayas from multi-year measurements, Atmos. Res., 96, 510–521, https://doi.org/10.1016/j.atmosres.2009.12.010, 2010.
Dumka, U. C., Manchanda, R. K., Sinha, P. R., Sreenivasan, S., Moorthy, K. K., and Babu, S. S.: Temporal variability and radiative impact of Black Carbon aerosol over tropical urban station Hyderabad, J. Atmos. Sol-Terr. Phys., 105–106, 81–90, 2013.
Dumka, U. C., Bhattu, D., Tripathi, S. N., Kaskaoutis, D. G., and Madhavan, B. L.: Seasonal inhomogeneity in cloud precursors over Gangetic Himalayan region during GVAX campaign, Atmos. Res., 155, 158–175, https://doi.org/10.1016/j.atmosres.2014.11.022, 2015.
Eck, T. F., Holben, B. N., Sinyuk, A., Pinker, R. T., Goloub, P., Chen, H., Chatenet, B., Li, Z., Singh, R. P., Tripathi, S. N., Reid, J. S., Giles, D. M., Dubovik, O., O'Neill, N. T., Smirnov, A., Wang, P., and Xia, X.: Climatological aspects of the optical properties of fine/coarse mode aerosol mixtures, J. Geophys. Res., 115, D19205, https://doi.org/10.1029/2010JD014002, 2010.
Fierz-Schmidhauser, R., Zieger, P., Gysel, M., Kammermann, L., DeCarlo, P. F., Baltensperger, U., and Weingartner, E.: Measured and predicted aerosol light scattering enhancement factors at the high alpine site Jungfraujoch, Atmos. Chem. Phys., 10, 2319–2333, https://doi.org/10.5194/acp-10-2319-2010, 2010.
Formenti, P., Andreae, M. O., Andreae, T. W., Ichoku, C., Schebeske, G., Kettle, J., Maenhaut, W. Cafmeyer, J., Ptasinsky, J., Karnieli, A., and Lelieveld, J.: Physical and chemical characteristics of aerosols over the Negev Desert (Israel) during summer 1996, J. Geophys. Res., 106, 4871–4890, 2001.
Ganguly, D., Jayaraman, A., Rajesh, T. A., and Gadhavi, H: Wintertime aerosol properties during foggy and non foggy days over urban center Delhi and their implications for shortwave radiative forcing, J. Geophys. Res., 111, D15217, https://doi.org/10.1029/2005JD007029, 2006.
Ganguly, D., Rasch, P. J., Wang, H., and Yoon, J. H.: Climate response of the South Asian monsoon system to anthropogenic aerosols, J. Geophys. Res., 117, D13209, https://doi.org/10.1029/2012JD017508, 2012.
Gautam, R., Hsu, N. C., Tsay, S. C., Lau, K. M., Holben, B., Bell, S., Smirnov, A., Li, C., Hansell, R., Ji, Q., Payra, S., Aryal, D., Kayastha, R., and Kim, K. M.: Accumulation of aerosols over the Indo-Gangetic plains and southern slopes of the Himalayas: distribution, properties and radiative effects during the 2009 pre-monsoon season, Atmos. Chem. Phys., 11, 12841–12863, https://doi.org/10.5194/acp-11-12841-2011, 2011.
Gautam, R., Hsu, N. C., and Lau, K.-M.: Premonsoon aerosol characterization and radiative effects over the Indo-Gangetic Plains: Implications for regional climate warming, J. Geophys. Res., 115, D17208, https://doi.org/10.1029/2010JD013819, 2010.
Giles, D. M., Holben, B. N., Tripathi, S. N., Eck, T., Newcomb, W., Slutsker, I., Dickerson, R., Thompson, A., Mattoo, S., Wang, S., Singh, R., Sinyuk, A., and Schafer, J.: Aerosol properties over the Indo–Gangetic plain: A1 mesoscale perspective from the TIGERZ experiment, J. Geophys. Res., 116, D18203, https://doi.org/10.1029/2011JD015809, 2011.
Giles, D. M., Holben, B. N., Eck, T. F., Sinyuk, A., Smirnov, A., Slutsker, I., Dickerson, R. R., Thompson, A. M., and Schafer, J. S.: An analysis of AERONET aerosol absorption properties and classifications representative of aerosol source regions, J. Geophys. Res., 117, D17203, https://doi.org/10.1029/2012JD018127, 2012.
Gopal Rama, K., Arafath, S. Md., Lingaswamy, A. P., Balakrishnaiah, G., Pavan Kumari, S., Uma Devi, K., Siva Kumar Reddy, N., Raja Obul Reddy, K., Penchal Reddy, M., Reddy, R. R., and Suresh Babu, S.: In-situ measurements of atmospheric aerosols by using Integrating Nephelometer over a semi-arid station, southern India, Atmos. Environ., 86, 228–240, 2014.
Guleria, R. P., Kuniyal, J. C., Rawat, P. S., Sharma, N. L., Thakur, H. K., Dhyani, P. P., and Singh, M.: The assessment of aerosol optical properties over Mohal in the northwestern Indian Himalayas using satellite and ground-based measurements and an influence of aerosol transport on aerosol radiative forcing, Meteorol. Atmos. Phys., 113, 153–169, https://doi.org/10.1007/s00703-011-0149-5, 2011.
Hegde, P. and Kawamura, K.: Seasonal variations of water-soluble organic carbon, dicarboxylic acids, ketocarboxylic acids, and α-dicarbonyls in Central Himalayan aerosols, Atmos. Chem. Phys., 12, 6645–6665, https://doi.org/10.5194/acp-12-6645-2012, 2012.
Hegde, P., Pant, P., Naja, M., Dumka, U. C., and Sagar, R.: South Asian dust episode in June 2006: aerosol observations in the central Himalayas, Geophys. Res. Lett., 34, L23802, https://doi.org/10.1029/2007GL030692, 2007.
Heintzenberg, J., Wiedensohler, A., Tuch, T. M., Covert, D. S., Sheridan, P., Ogren, J. A., Gras, J., Nessler, R., Kleefeld, C., Kalivitis, N., Aaltonen, V., Wilhelm, R. T., and Havlicek, M.: Intercomparison and aerosol calibrations of 12 commercial integrating Nephelometer of three manufacturers, J. Atmos. Ocean. Tech., 23, 902–914, 2006.
Hyvärinen, A.-P., Raatikainen, T., Brus, D., Komppula, M., Panwar, T. S., Hooda, R. K., Sharma, V. P., and Lihavainen, H.: Effect of the summer monsoon on aerosols at two measurement stations in Northern India – Part 1: PM and BC concentrations, Atmos. Chem. Phys., 11, 8271–8282, https://doi.org/10.5194/acp-11-8271-2011, 2011a.
Hyvärinen, A.-P., Raatikainen, T., Komppula, M., Mielonen, T., Sundström, A.-M., Brus, D., Panwar, T. S., Hooda, R. K., Sharma, V. P., de Leeuw, G., and Lihavainen, H.: Effect of the summer monsoon on aerosols at two measurement stations in Northern India – Part 2: Physical and optical properties, Atmos. Chem. Phys., 11, 8283–8294, https://doi.org/10.5194/acp-11-8283-2011, 2011b.
Hyvärinen, A.-P, Lihavainen, H., Komppula, M., Sharma, V. P., Kerminen, V.-M., Panwar, T. S., and Viisanen, Y.: Continuous measurements of optical properties of atmospheric aerosols in Mukteshwar, Northern India, J. Geophys. Res., 114, D08207, https://doi.org/10.1029/2008JD011489, 2009.
Jayaraman, A., Gadhavi, H., Misra, A., Ganguly, D., Ramachandran, S., and Rajesh, T. A.: Spatial variations in aerosol characteristics and regional radiative forcing over India: measurements and modeling of 2004 road campaign experiment, Atmos. Environ., 40, 6504–6515, https://doi.org/10.1016/j.atmosenv.2006.01.034, 2006.
Jefferson, A.: Aerosol Observing System (AOS) Handbook, DOE/SC-ARM/TR-014, (http://www.arm.gov/publications/tech_reports/handbooks/aos_handbook.pdf), 2011. Kaskaoutis, D. G., Singh, R. P., Gautam, R., Sharma, M., Kosmopoulos, P. G., and Tripathi, S. N.: Variability and trends of aerosol properties over Kanpur, northern India using AERONET data (2001–10), Environ. Res. Lett., 7, 024003, https://doi.org/10.1088/1748-9326/7/2/024003, 2012.
Kaskaoutis, D. G., Sinha, P. R., Vinoj, V., Kosmopoulos, P. G., Tripathi, S. N., Misra, A., Sharmaf, M., and Singh, R. P.: Aerosol properties and radiative forcing over Kanpur during severe aerosol loading conditions, Atmos. Environ., 79, 7–19, https://doi.org/10.1016/j.atmosenv.2013.06.020, 2013.
Kaskaoutis, D. G., Kumar, S., Sharma, D., Singh, R. P., Kharol, S. K., Sharma, M., Singh, A. K., Singh, S., Singh, A., and Singh, D.: Effects of crop residue burning on aerosol properties, plume characteristics and longrange transport over northern India, J. Geophys. Res., 119, 5424–5444, https://doi.org/10.1002/2013JD021357, 2014.
Kirchstetter, T. W., Novakov, T., and Hobbs, P. V.: Evidence that the spectral dependence of light absorption by aerosols is affected by organic carbon, J. Geophys. Res., 109, D21208, https://doi.org/10.1029/2004JD004999, 2004.
Komppula, M., Lihavainen, H., Hyvärinen, A.-P., Kerminen, V.-M., Panwar, T. S., Sharma, V. P., and Viisanen, Y.: Physical properties of aerosol particles at a Himalayan background site in India, J. Geophys. Res., 114, D12202, https://doi.org/10.1029/2008JD011007, 2009.
Kopacz, M., Jacob, D. J., Fisher, J. A., Logan, J. A., Zhang, L., Megretskaia, I. A., Yantosca, R. M., Singh, K., Henze, D. K., Burrows, J. P., Buchwitz, M., Khlystova, I., McMillan, W. W., Gille, J. C., Edwards, D. P., Eldering, A., Thouret, V., and Nedelec, P.: Global estimates of CO sources with high resolution by adjoint inversion of multiple satellite datasets (MOPITT, AIRS, SCIAMACHY, TES), Atmos. Chem. Phys., 10, 855–876, https://doi.org/10.5194/acp-10-855-2010, 2010.
Kotamarthi, V. R. and Satheesh, S. K.: Ganges Valley Aerosol Experiment, Air & Waste Management Association, Em, The magazine for environmental managers, 2011.
Kumar, R., Barth, M. C., Pfister, G. G., Naja, M., and Brasseur, G. P.: WRF-Chem simulations of a typical pre-monsoon dust storm in northern India: influences on aerosol optical properties and radiation budget, Atmos. Chem. Phys., 14, 2431–2446, https://doi.org/10.5194/acp-14-2431-2014, 2014.
Lau, K. M., Kim, M. K., and Kim, K. M.: Asian summer monsoon anomalies induced by aerosol direct forcing: the role of the Tibetan Plateau, Clim. Dynam., 26, 855–864, https://doi.org/10.1007/s00382-014-2055-2, 2006.
Lawrence, M. G. and Lelieveld, J.: Atmospheric pollutant outflow from Southern Asia: a review, Atmos. Chem. Phys., 10, 11017–11096, https://doi.org/10.5194/acp-10-11017-2010, 2010.
León, J.-F. and Legrand, M.: Mineral dust sources in the surroundings of the north Indian Ocean, Geophys. Res. Lett., 30, 1309, https://doi.org/10.1029/2002GL016690, 2003.
Liu, Z., Liu, D., Huang, J., Vaughan, M., Uno, I., Sugimoto, N., Kittaka, C., Trepte, C., Wang, Z., Hostetler, C., and Winker, D.: Airborne dust distributions over the Tibetan Plateau and surrounding areas derived from the first year of CALIPSO lidar observations, Atmos. Chem. Phys., 8, 5045–5060, https://doi.org/10.5194/acp-8-5045-2008, 2008.
Lu, Z., Zhang, Q., and Streets, D. G.: Sulfur dioxide and primary carbonaceous aerosol emissions in China and India, 1996–2010, Atmos. Chem. Phys., 11, 9839–9864, https://doi.org/10.5194/acp-11-9839-2011, 2011.
Manoharan, V. S., Kotamarthi, R., Feng, Y., and Cadeddu, M. P.: Increased absorption by coarse aerosol particles over the Gangetic–Himalayan region, Atmos. Chem. Phys., 14, 1159–1165, https://doi.org/10.5194/acp-14-1159-2014, 2014.
Manoj, M. G., Devara, P. C. S., Safai, P. D., and Goswami, B. N.: Absorbing aerosols facilitate transition of Indian monsoon breaks to active spells, Clim. Dynam., 37, 2181–2198, 2011.
Marcq, S., Laj, P., Roger, J. C., Villani, P., Sellegri, K., Bonasoni, P., Marinoni, A., Cristofanelli, P., Verza, G. P., and Bergin, M.: Aerosol optical properties and radiative forcing in the high Himalaya based on measurements at the Nepal Climate Observatory-Pyramid site (5079 m a.s.l.), Atmos. Chem. Phys., 10, 5859–5872, https://doi.org/10.5194/acp-10-5859-2010, 2010.
Marinoni, A., Cristofanelli, P., Laj, P., Duchi, R., Calzolari, F., Decesari, S., Sellegri, K., Vuillermoz, E., Verza, G. P., Villani, P., and Bonasoni, P.: Aerosol mass and black carbon concentrations, a two year record at NCO-P (5079 m, Southern Himalayas), Atmos. Chem. Phys., 10, 8551–8562, https://doi.org/10.5194/acp-10-8551-2010, 2010.
Nakajima, T., Yoon, S.-C., Ramanathan, V., Shi, G.-Y., Takemura, T., Higurashi, A., Takamura, T., Aoki, K., Sohn, B.-J., Kim, S.-W., Tsuruta, H., Sugimoto, N., Shimizu, A. Tanimoto, H., Sawa, Y., Lin, N.-H., Lee, C.-T., Goto, D., and Schutgens, N.: Overview of the atmospheric Brown Cloud East Asian Regional Experiment 2005 and a study of the aerosol direct radiative forcing in east Asia, J. Geophys. Res., 112, D24S91, https://doi.org/10.1029/2007JD009009, 2007.
Neitola K., Asmi E., Komppula M., Hyvärinen A.-P. Raatikainen T., Panwar T. S., Sharma V. P. and Lihavainen H.: New particle formation infrequently observed in Himalayan foothills – why?, Atmos. Chem. Phys., 11, 8447–8458, https://doi.org/ 10.5194/acp-11-8447-2011, 2011.
Ogren, J. A.: Comment on "Calibration and Intercomparison of Filter-Based Measurements of Visible Light Absorption by Aerosols", Aerosol Sci. Tech., 44, 589–591, 2010.
Pandolfi, M., Ripoll, A., Querol, X., and Alastuey, A.: Climatology of aerosol optical properties and black carbon mass absorption cross section at a remote high-altitude site in the western Mediterranean Basin, Atmos. Chem. Phys., 14, 6443–6460, https://doi.org/10.5194/acp-14-6443-2014, 2014.
Pant, P., Hegde, P., Dumka, U. C., Sagar, R., Satheesh, S. K., Moorthy, K. K., Saha, A., and Srivastava, M. K.: Aerosol characteristics at a high-altitude location in central Himalayas: Optical properties and radiative forcing, J. Geophys. Res., 111, D17206, https://doi.org/10.1029/2005JD006768, 2006.
Panwar, T. S., Hooda Rakesh, K., Lihavainen, H., Hyvärinen, A. P., Sharma, V. P., and Viisanen, Y.: Atmospheric aerosols at a regional background Himalayan site-Mukteshwar, India, Environ. Monit. Assess., 185, 4753–4764, https://doi.org/10.1007/s10661-012-2902-8, 2013.
Pathak, B., Bhuyan, P. K., Biswas, J., and Takemura, T.: Long term climatology of Particulate Matter and associated microphysical and optical properties over Dibrugarh, North-East India and inter-comparison with SPRINTARS simulations, Atmos. Environ., 69, 334–344, 2013.
Prabha T. V., Karipot, A., Axisa D., Padmakumari B., Maheskumar R. S., Konwar M., Kulkarni J. R., and Goswami B. N.: Scale interactions near the foothills of Himalaya during CAIPEEX, J. Geophys. Res., 117, D10203, https://doi.org/10.1029/2011JD0167, 2012.
Raatikainen T., Hyvärinen A.-P., Hatakka J., Panwar T. S., Hooda R. K., Sharma, V. P., and Lihavainen, H.: The effect of boundary layer dynamics on aerosol properties at the Indo-Gangetic plains and at the foothills of the Himalayas, Atmos. Environ., 89, 548–555, https://doi.org/10.1016/j.atmosenv.2014.02.058, 2014.
Ram, K. and Sarin, M. M: Spatio-temporal variability in atmospheric abundances of EC, OC and WSOC over Northern India, J. Aerosol Sci., 41, 88–98, https://doi.org/10.1016/j.jaerosci.2009.11.004, 2010.
Ram, K., Sarin, M. M., and Hedge, P.: Atmospheric abundances of primary and secondary carbonaceous species at two high-altitude sites in India: sources and temporal variability, Atmos. Environ., 42, 6785–6796, 2008.
Ram, K., Sarin, M. M., and Hegde, P.: Long-term record of aerosol optical properties and chemical composition from a high-altitude site (Manora Peak) in Central Himalaya, Atmos. Chem. Phys., 10, 11791–11803, https://doi.org/10.5194/acp-10-11791-2010, 2010.
Ramanathan, V., Chung, C., Kim, D., Bettge, T., Buja, L., Kiehl, J. T., Washington, W. M., Fu, Q., Sikka, D. R., and Wild, M.: Atmospheric brown clouds: impacts on South Asian climate and hydrological cycle, P. Natl. Acad. Sci. USA, 102, 5326–5333, https://doi.org/10.1073/pnas.0500656102, 2005.
Ramanathan, V., Li, F., Ramana, M. V., Praveen, P. S., Kim, D., Corrigan, C. E., Nguyen, H., Stone, E. A., Schauer, J. J., Carmichael, G. R., Adhikary, B., and Yoon, S. C.: Atmospheric brown clouds: Hemispherical and regional variations in long-range transport, absorption, and radiative forcing, J. Geophys. Res., 112, D22S21, https://doi.org/10.1029/2006JD008124, 2007.
Randles, C. A. and Ramaswamy, V.: Absorbing aerosols over Asia: a geophysical fluid dynamics laboratory general circulation model sensitivity study of model response to aerosol optical depth and aerosol absorption, J. Geophys. Res., 113, D21203, https://doi.org/10.1029/2008JD010140, 2008.
Russell, P. B., Bergstrom, R. W., Shinozuka, Y., Clarke, A. D., DeCarlo, P. F., Jimenez, J. L., Livingston, J. M., Redemann, J., Dubovik, O., and Strawa, A.: Absorption Angstrom Exponent in AERONET and related data as an indicator of aerosol composition, Atmos. Chem. Phys., 10, 1155–1169, https://doi.org/10.5194/acp-10-1155-2010, 2010.
Sarkar, C., Chatterjee, A., Singh, A.K., Ghosh, S.K., and Raha, S.: Characterization of Black Carbon aerosols over Darjeeling – A high altitude Himalayan station in Eastern India, Aeros. Air Qual. Res., in press, https://doi.org/10.4209/aaqr.2014.02.0028, 2014.
Seibert, P., Kromp-Kolb, H., Baltensperger, U., Jost, D. T., Schwikowski, M., Kasper, A. and Puxbaum, H.: Trajectory analysis of aerosol measurements at high alpine sites, in: Transport and Transformation of Pollutants in the Troposphere: Proceedings of EUROTRAC Symposium '94, edited by: Borrell, P. M., Cvitas, T., and Seiler, W., 689–693, SPB Acad. Publ., Hague, The Netherlands, 1994.
Sheridan, P. J. and Ogren, J. A.: Observations of the vertical and regional variability of aerosol optical properties over central and eastern North America, J. Geophys. Res., 104, 16793–16805, https://doi.org/10.1029/1999JD900241, 1999.
Sheridan, P. J., Delene, D. J., and Ogren, J. A.: Four years of continuous surface aerosol measurements from the Department of Energy's Atmospheric Radiation Measurement Program Southern Great Plains Cloud and Radiation Testbed site, J. Geophys. Res., 106, 20735–20747, https://doi.org/10.1029/2001JD000785, 2001.
Srivastava, A. K., Singh, S., Pant, P., and Dumka, U. C.: Characteristics of Black Carbon over Delhi and Manora Peak – a comparative study, Atmos. Sci. Lett. 13, 223–230, 2012.
Titos, G., Jefferson, A., Sheridan, P. J., Andrews, E., Lyamani, H., Alados-Arboledas L., and Ogren J. A.: Aerosol light-scattering enhancement due to water uptake during TCAP campaign, Atmos. Chem. Phys., 14, 7031–7043, https://doi.org/10.5194/acp-14-7031-2014, 2014a.
Titos, G., Lyamani, H., Cazorla, A., Sorribas, M., Foyo-Moreno, I., Wiedensohler, A., and Alados-Arboledas, L.: Study of the relative humidity dependence of aerosol light-scattering in southern Spain, Tellus B, 66, 24536, http://dx.doi.org/10.3402/tellusb.v66.24536, 2014b.
Twardowski, M. S., Boss, E., Macdonald, J. B., Scott Pegau, W., Barnard, A. H., and Zaneveld, J. R. V.: A model for estimating bulk refractive index from the optical backscattering ratio and the implications for understanding particle composition in case I and case II waters, J. Geophys. Res., 106, 14129–14142, 2001.
Vijayakumar, K., Devara, P. C. S., and Sonbawne, S. M.: Type-segregated aerosol effects on regional monsoon activity: A study using ground-based experiments and model simulations, Atmos. Environ., 99, 650–659, 2014.
Vijayakumar, K., Devara, P. C. S., and Simha, C. P.: Aerosol features during drought and normal monsoon years: A study undertaken with multi-platform measurements over a tropical urban site, Aero. Air Qual. Res., 12, 1444–1458, 2012.
Virkkula A., Backman J., Aalto P. P., Hulkkonen M., Riuttanen L., Nieminen T., dal Maso M., Sogacheva L., de Leeuw G., and Kulmala M.: Seasonal cycle, size dependencies, and source analyses of aerosol optical properties at the SMEAR II measurement station in Hyytiälä, Finland, Atmos. Chem. Phys., 11, 4445–4468, https://doi.org/10.5194/acp-11-4445-2011, 2011.
Xu, C., Ma Y. M., Pandey A., Cong Z. Y., Yang K., Zhu Z. K., Wang J. M., Amatya P. M., and Zhao L: Similarities and differences of aerosol optical properties between southern and northern slopes of the Himalayas, Atmos. Chem. Phys., 14, 3133–3149, https://doi.org/10.5194/acp-14-3133-2014, 2014.
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