Solid or liquid particles suspended in the air (ranging from nanometer to 10-micrometer diameter) termed as aerosols are produced by natural (as earth crust, desert, volcanic eruption, sea spray, etc) and anthropogenic (fossil fuel combustions in industries, biomass and biofuel burning, vehicular traffic, etc) sources. During the recent past, the atmospheric aerosols from anthropogenic sources into the atmosphere have been tremendously increasing and have gained the impact on regional/global air quality, visibility degradation, cloud formation and atmospheric chemistry, radiation budget etc. and on human health too. In addition to this, the rapid increases in of urbanization and industrialization have resulted in extremely poor air quality in megacities all over the world. According to various national and international studies, it was observed that the air quality over the northern part of Indian cities especially Indo-Gangetic Basin and Brahmaputra River Valley region as well as Himalayan regions have received to be the worst air quality during the post monsoon and winter periods. In addition to this, during the summer period, glaciers melting over high altitude Himalayan regions were observed. In foothills of Himalayan regions, it was noticed that in several occasions, the level of mass concentrations of aerosols reaches up to 800 µg/m3. Recently, in the mega city the Delhi, the government has declared temporarily shut construction work and a coal-fired power station to bring the situation under control due to severe levels of toxic air pollution “emergency situation” in Delhi. In addition to this, they closed the schools in the capital of India for three days due to heavy smog (in the month of Nov.2016) around six days. During the pre-monsoon and winter periods, the wind air masses passes from South West direction where several industrialized cities are located are affecting, the lower altitude of the Himalayan region.
In view of the above, the Hemvati Nandan Bahuguna Garhwal University (HNBGU) Srinagar – Pauri Garhwal, Uttarakhand is going to organize a national conference on “Aerosols, Air Quality, and Climate Change (AAC-2018) on Himalayan Region of Uttarakhand ” in the Department of Physics, School of Science, HNBGU, Srinagar (Garhwal), India on 21-23 October, 2018.
The main objectives of this conference are:
- to discuss the characteristics (Physical, Chemical, and Optical Properties) of atmospheric aerosols
- to discuss on the sources regions of polluted species and its role in climate change
- to try to find out the possibility to give the message to the Government of India: How can mitigate the emissions of anthropogenically polluted species?
- to propose network setup to study the atmospheric aerosols over the Himalayan region with the help of funding agency suggested by the experts who will be gathered in the confernce in HNBGU, Srinagar.
In this conference, the total participant will be more than 250 including thirty from HNBGU, Srinagar and around fifty from National research organization and universities (IITs, IISER, IITM, PRL, NPL, IMD, Bose Institute, JNU, BHU, Indian Universities). The list of the participant is attached herewith.