Sub-micron particle number size distributions characteristics at an urban location, Kanpur, in the Indo-Gangetic Plain

2014 ◽  
Vol 147-148 ◽  
pp. 121-132 ◽  
Author(s):  
V.P. Kanawade ◽  
S.N. Tripathi ◽  
Deepika Bhattu ◽  
P.M. Shamjad
Keyword(s):  
Particle Number ◽  
Size Distributions ◽  
Gangetic Plain ◽  
Urban Location ◽  
Micron Particle ◽  
Indo Gangetic Plain

scholarly journals Airborne in situ measurements of aerosol size distributions and black carbon across the Indo-Gangetic Plain during SWAAMI–RAWEX

2020 ◽  
Vol 20 (14) ◽  
pp. 8593-8610 ◽  
Author(s):  
Mukunda Madhab Gogoi ◽  
Venugopalan Nair Jayachandran ◽  
Aditya Vaishya ◽  
Surendran Nair Suresh Babu ◽  
Sreedharan Krishnakumari Satheesh ◽  
...  
Keyword(s):  
Black Carbon ◽  
Mass Fraction ◽  
Aerosol Size Distribution ◽  
Size Distributions ◽  
Gangetic Plain ◽  
Airborne Measurements ◽  
Coarse Mode ◽  
Indo Gangetic Plain ◽  
Very High ◽  
Mass Concentrations

Abstract. During the combined South-West Asian Aerosol–Monsoon Interactions and Regional Aerosol Warming Experiment (SWAAMI–RAWEX), collocated airborne measurements of aerosol number–size distributions in the size (diameter) regime 0.5 to 20 µm and black carbon (BC) mass concentrations were made across the Indo-Gangetic Plain (IGP), for the first time, from three distinct locations, just prior to the onset of the Indian summer monsoon. These measurements provided an east–west transect of region-specific properties of aerosols as the environment transformed from mostly arid conditions of the western IGP (represented by Jodhpur, JDR) having dominance of natural aerosols to the central IGP (represented by Varanasi, VNS) having very high anthropogenic emissions, to the eastern IGP (represented by the coastal station Bhubaneswar, BBR) characterized by a mixture of the IGP outflow and marine aerosols. Despite these, the aerosol size distribution revealed an increase in coarse mode concentration and coarse mode mass fraction (fractional contribution to the total aerosol mass) with the increase in altitude across the entire IGP, especially above the well-mixed region. Consequently, both the mode radii and geometric mean radii of the size distributions showed an increase with altitude. However, near the surface and within the atmospheric boundary layer (ABL), the features were specific to the different subregions, with the highest coarse mode mass fraction (FMC∼72 %) in the western IGP and highest accumulation fraction in the central IGP with the eastern IGP in between. The elevated coarse mode fraction is attributed to mineral dust load arising from local production as well as due to advection from the west. This was further corroborated by data from the Cloud-Aerosol Transport System (CATS) on board the International Space Station (ISS), which also revealed that the vertical extent of dust aerosols reached as high as 5 km during this period. Mass concentrations of BC were moderate (∼1 µg m−3) with very little altitude variation up to 3.5 km, except over VNS where very high concentrations were seen near the surface and within the ABL. The BC-induced atmospheric heating rate was highest near the surface at VNS (∼0.81 K d−1), while showing an increasing pattern with altitude at BBR (∼0.35 K d−1 at the ceiling altitude).

Carbon isotope-constrained seasonality of carbonaceous aerosol sources from an urban location (Kanpur) in the Indo-Gangetic Plain

2017 ◽  
Vol 122 (9) ◽  
pp. 4903-4923 ◽  
Author(s):  
Srinivas Bikkina ◽  
August Andersson ◽  
Kirpa Ram ◽  
M. M. Sarin ◽  
Rebecca J. Sheesley ◽  
...  
Keyword(s):  
Carbon Isotope ◽  
Carbonaceous Aerosol ◽  
Gangetic Plain ◽  
Urban Location ◽  
Aerosol Sources ◽  
Indo Gangetic Plain

scholarly journals Long-term observation of black carbon aerosols at an urban location over the central Indo-Gangetic Plain, South Asia

Atmósfera ◽  
2019 ◽  
Vol 32 (2) ◽  
pp. 95-113 ◽  
Author(s):  
Sambhawika Srivastava ◽  
◽  
Manish Kumar ◽  
Ram S. Singh ◽  
Birendra N. Rai ◽  
...  
Keyword(s):  
South Asia ◽  
Black Carbon ◽  
Gangetic Plain ◽  
Urban Location ◽  
Long Term Observation ◽  
Carbon Aerosols ◽  
Indo Gangetic Plain ◽  
Black Carbon Aerosols

scholarly journals Chemical characterisation and source apportionment of PM1during massive loading at an urban location in Indo-Gangetic Plain: impact of local sources and long-range transport

Tellus B ◽  
2016 ◽  
Vol 68 (1) ◽  
pp. 30659 ◽  
Author(s):  
Prashant Rajput ◽  
Anil Mandaria ◽  
Lokesh Kachawa ◽  
Dharmendra Kumar Singh ◽  
Amit Kumar Singh ◽  
...  
Keyword(s):  
Source Apportionment ◽  
Long Range ◽  
Long Range Transport ◽  
Gangetic Plain ◽  
Urban Location ◽  
Range Transport ◽  
Local Sources ◽  
Indo Gangetic Plain

Severe air pollution and characteristics of light-absorbing particles in a typical rural area of the Indo-Gangetic Plain

2020 ◽  
Vol 27 (10) ◽  
pp. 10617-10628 ◽  
Author(s):  
Pengfei Chen ◽  
Shichang Kang ◽  
Lekhendra Tripathee ◽  
Arnico K. Panday ◽  
Maheswar Rupakheti ◽  
...  
Keyword(s):  
Air Pollution ◽  
Rural Area ◽  
Gangetic Plain ◽  
Indo Gangetic Plain

scholarly journals Impact of Integrated Agronomic Practices on Soil Fertility and Respiration on the Indo-Gangetic Plain of North India

Agronomy ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 402
Author(s):  
Rama Kant Dubey ◽  
Pradeep Kumar Dubey ◽  
Rajan Chaurasia ◽  
Ch Srinivasa Rao ◽  
Purushothaman Chirakkuzhyil Abhilash
Keyword(s):  
Soil Respiration ◽  
Soil Quality ◽  
Mycorrhizal Fungi ◽  
Field Experiments ◽  
Block Design ◽  
North India ◽  
Gangetic Plain ◽  
Agronomic Practices ◽  
Soil Sustainability ◽  
Indo Gangetic Plain

Global agricultural production is accountable for the emission of ~30% of greenhouse gases. Therefore, the wide-scale adoptions of low-input, soil-friendly, and resource-conserving agronomic practices are imperative for the ‘planet healthy food production’ and also for reducing the carbon emissions from agricultural soil. In this context, the present study aimed to analyze the impacts of integrated agronomic interventions i.e., the application of arbuscular mycorrhizal fungi (AMF) + reduced tillage (RT), biochar + RT, and AMF + biochar + RT, on spatiotemporal variations in soil-quality and soil-sustainability indicators, including microbial and soil respiration, in the Indo-Gangetic Plain (IGP) of North India. For this, field experiments on the above-mentioned agronomic interventions were employed using three different staple crops (Zea mays, Vigna mungo, and Brassica juncea) growing in three different agro-climatic zones of IGP (Varanasi, Sultanpur, and Gorakhpur) in a randomized block design. Periodic data collection was done to analyze the changes in physiochemical, biological, and biochemical properties of the soil, and statistical analyses were done accordingly. Irrespective of the sites, the experimental results proved that the integrated application of AMF + biochar + RT in V. mungo resulted in the highest soil organic carbon (i.e., 135% increment over the control) and microbial biomass carbon (24%), whereas the same application (i.e., AMF + biochar + RT) in Z. mays had the maximum reduction in microbial (32%) and soil (44%) respiration. On the other hand, enhanced occurrence of glomalin activity (98%) was noted in Z. mays cropping for all the sites. Significant negative correlation between soil respiration and glomalin activity under AMF + biochar + RT (−0.85), AMF + RT (−0.82), and biochar + RT (−0.62) was an indication of glomalin’s role in the reduced rate of soil respiration. The research results proved that the combined application of AMF + biochar + RT was the best practice for enhancing soil quality while reducing respiration. Therefore, the development of suitable packages of integrated agronomic practices is essential for agricultural sustainability.

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