|Author||Pant, P. ♦ Hegde, P. ♦ Dumka, U. C. ♦ Saha, A. ♦ Srivastava, M. K. ♦ Sagar, R.|
|Source||Aryabhatta Research Institute of Observational Sciences (ARIES)|
|Subject Domain (in DDC)||Natural sciences & mathematics ♦ Physics|
|Subject Keyword||Aerosol Optical Depth ♦ Black Carbon ♦ Columnar Ozone ♦ ISRO–GBP Land Campaign-II|
|Abstract||We present detailed analysis of the extensively measured aerosol parameters at the Aryyabhatta Research Institute of Observational Sciences (ARIES), Manora Peak Nainital, during ISRO-GBP Land Campaign-II. This land campaign was focused on the winter month of December 2004, using eight fixed stations distinctly located over the Gangetic belt in the North Indian corridor, where thick fog conditions generally prevail during winter. Among these stations, manora Peak was seleted jue to its high-altitude locations, at an altitude of ~2 km, having a pristine location in the Shivalik Ranges of Central Himalayas and allowing a free tropospheric site. In this perspective, observations of aerosol optical depths (AODs), black carbon (BC) mass concentration, total columnar ozone (TCO), mass loading of total suspended particulates (TSP), and number concentration of near-surface aerosols have been carried out from Manora Peak. These experiments barring AODs, were made for the first time at this location. The monthly mean AOD at 500m was found to be 0.056 (± 0.037). Temporal as well as the diurnal variation of BC mass concentration show almost similar variation as that of aerosol number (>0.3 μm) concentration, having relatively low values during night and early morning periods, and gradually increasing as the day advances reaching its maximum level around 1600 h local time. The monthly mean BC concentration was found to be 1.36 (± 0.99) μg m–³. Mass loading of TSP was in the range 20–40 μg m–³, with a mean value of 27.1 (± 8.3) μg m–³. During the period under study, average BC mass fraction at Nainital was found to be ~6.3 ± 2%. The monthly mean TCO was found to be 268 ± 22 DU. The diurnal variation of BC mass concentration shows a typical behaviour compared with other low-altitude stations, where simultaneous measurements were made by other investigators during the campaign. This behaviour in the diurnal trend of aerosols is due to the topography and the boundary-layer dynamics over the high-altitude station of ARIES at Nainital.|
|Part of series||cs91-1053|
|Education Level||UG and PG|
|Learning Resource Type||Article|
Ministry of Human Resource Development (MHRD) under its National Mission on Education through Information and Communication Technology (NMEICT) has initiated the National Digital Library of India (NDL India) pilot project to develop a framework of virtual repository of learning resources with a single-window search facility. Filtered and federated searching is employed to facilitate focused searching so that learners can find out the right resource with least effort and in minimum time. NDL India is designed to hold content of any language and provides interface support for leading Indian languages. It is being arranged to provide support for all academic levels including researchers and life-long learners, all disciplines, all popular form of access devices and differently-abled learners. It is being developed to help students to prepare for entrance and competitive examination, to enable people to learn and prepare from best practices from all over the world and to facilitate researchers to perform inter-linked exploration from multiple sources. The pilot project is devising a framework that is being scaled up with respect to content volume and diversity to serve all levels and disciplines of learners. It is being developed at Indian Institute of Technology Kharagpur.
NDL India is a conglomeration of freely available or institutionally contributed or donated or publisher managed contents. Almost all these contents are hosted and accessed from respective sources. The responsibility for authenticity, relevance, completeness, accuracy, reliability and suitability of these contents rests with respective organization from where the contents are sourced and NDL India has no responsibility or liability for these. Every effort is made to keep the NDL India portal up and running smoothly. However, NDL India takes no responsibility for, and will not be liable for, the portal being unavailable due to technical issues or otherwise.
Ministry of Human Resource Development (MHRD), through its National Mission on Education through Information and Communication Technology (NMEICT), has sponsored and funded the National Digital Library of India (NDL India) pilot project.
For any issue or feedback, please write to firstname.lastname@example.org
COVID-19 Lockdown not to affect your study. Study through National Digital Library of India (NDLI).