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'description' => '<p style="margin-right:0in"><span style="font-size:11pt"><span style="font-family:Calibri,sans-serif"><strong>Issue</strong></span></span></p>
<p style="margin-right:0in"><span style="font-size:11pt"><span style="font-family:Calibri,sans-serif">Black carbon concentrations near the Gangotri glacier rose 400 times in summer due to forest fires and stubble burning from agricultural waste, and triggered glacial melt, according to a study.</span></span></p>
<p style="margin-right:0in"> </p>
<p style="margin-right:0in"><span style="font-size:11pt"><span style="font-family:Calibri,sans-serif"><strong>Background</strong></span></span></p>
<p style="margin-right:0in"><span style="font-size:11pt"><span style="font-family:Calibri,sans-serif">Being a pristine zone far from sources of pollution, the measurements are critical to establishing a baseline for pollution loads and estimating the contribution of various sources to pollution.</span></span></p>
<p style="margin-right:0in"> </p>
<p style="margin-right:0in"><span style="font-size:11pt"><span style="font-family:Calibri,sans-serif"><strong>Details</strong></span></span></p>
<ul>
<li>
<p><span style="font-size:11pt"><span style="font-family:Calibri,sans-serif">The team of scientists measured variations of black carbon concentration at Chirbasa, near the Gangotri glacier in the Indian Himalaya, and located at an altitude of 3,600 metres, during the year 2016. </span></span></p>
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<li>
<p><span style="font-size:11pt"><span style="font-family:Calibri,sans-serif">The monthly mean concentration of EBC (equivalent black carbon) was found to be minimum in August and maximum in the month of May. </span></span></p>
</li>
<li>
<p><span style="font-size:11pt"><span style="font-family:Calibri,sans-serif">The observed seasonal mean concentrations of EBC indicated a pristine glacial source and an absence of EBC sources in the locality.</span></span></p>
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<li>
<p><span style="font-size:11pt"><span style="font-family:Calibri,sans-serif"><strong>Black carbon</strong> results from the incomplete combustion of fossil fuels and biomass. The fine particles absorb light and about a million times more energy than carbon dioxide. </span></span></p>
</li>
<li>
<p><span style="font-size:11pt"><span style="font-family:Calibri,sans-serif">It is said to be the second largest contributor to climate change after CO2. But unlike CO2, which can stay in the atmosphere for years together, black carbon is short-lived and remains in the atmosphere only for days to weeks before it descends as rain or snow.</span></span></p>
</li>
<li>
<p><span style="font-size:11pt"><span style="font-family:Calibri,sans-serif">Black carbon absorbs solar energy and warms the atmosphere. When it falls to earth with precipitation, it darkens the surface of snow and ice, reducing their <strong>albedo</strong> (the reflecting power of a surface), warming the snow, and hastening melting.</span></span></p>
</li>
<li>
<p><span style="font-size:11pt"><span style="font-family:Calibri,sans-serif">India is the second largest emitter of black carbon in the world, with emissions expected to increase dramatically in the coming decades, with the Indo Gangetic plains said to be the largest contributor.</span></span></p>
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<p style="margin-right:0in"><span style="font-size:11pt"><span style="font-family:Calibri,sans-serif"><strong>Brown carbon</strong></span></span></p>
<p style="margin-right:0in"><span style="font-size:11pt"><span style="font-family:Calibri,sans-serif">Black carbon is primarily released by high-temperature combustion and brown carbon is emitted mainly by biomass combustion.</span></span></p>
<p style="margin-right:0in"> </p>
<p style="margin-right:0in"><span style="font-size:11pt"><span style="font-family:Calibri,sans-serif"><strong>Blue carbon</strong></span></span></p>
<p style="margin-right:0in"><span style="font-size:11pt"><span style="font-family:Calibri,sans-serif">Blue carbon is the term for carbon captured by the world's ocean and coastal ecosystems. Sea grasses, mangroves, and salt marshes along our coast "capture and hold" carbon, acting as something called a carbon sink.</span></span></p>
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'tag' => 'Climate Change',
'keyword' => 'climate-change',
'id' => (int) 3835,
'title' => 'Black carbon levels increase at Himalayan glaciers',
'description' => '<p style="margin-right:0in"><span style="font-size:11pt"><span style="font-family:Calibri,sans-serif"><strong>Issue</strong></span></span></p>
<p style="margin-right:0in"><span style="font-size:11pt"><span style="font-family:Calibri,sans-serif">Black carbon concentrations near the Gangotri glacier rose 400 times in summer due to forest fires and stubble burning from agricultural waste, and triggered glacial melt, according to a study.</span></span></p>
<p style="margin-right:0in"> </p>
<p style="margin-right:0in"><span style="font-size:11pt"><span style="font-family:Calibri,sans-serif"><strong>Background</strong></span></span></p>
<p style="margin-right:0in"><span style="font-size:11pt"><span style="font-family:Calibri,sans-serif">Being a pristine zone far from sources of pollution, the measurements are critical to establishing a baseline for pollution loads and estimating the contribution of various sources to pollution.</span></span></p>
<p style="margin-right:0in"> </p>
<p style="margin-right:0in"><span style="font-size:11pt"><span style="font-family:Calibri,sans-serif"><strong>Details</strong></span></span></p>
<ul>
<li>
<p><span style="font-size:11pt"><span style="font-family:Calibri,sans-serif">The team of scientists measured variations of black carbon concentration at Chirbasa, near the Gangotri glacier in the Indian Himalaya, and located at an altitude of 3,600 metres, during the year 2016. </span></span></p>
</li>
<li>
<p><span style="font-size:11pt"><span style="font-family:Calibri,sans-serif">The monthly mean concentration of EBC (equivalent black carbon) was found to be minimum in August and maximum in the month of May. </span></span></p>
</li>
<li>
<p><span style="font-size:11pt"><span style="font-family:Calibri,sans-serif">The observed seasonal mean concentrations of EBC indicated a pristine glacial source and an absence of EBC sources in the locality.</span></span></p>
</li>
<li>
<p><span style="font-size:11pt"><span style="font-family:Calibri,sans-serif"><strong>Black carbon</strong> results from the incomplete combustion of fossil fuels and biomass. The fine particles absorb light and about a million times more energy than carbon dioxide. </span></span></p>
</li>
<li>
<p><span style="font-size:11pt"><span style="font-family:Calibri,sans-serif">It is said to be the second largest contributor to climate change after CO2. But unlike CO2, which can stay in the atmosphere for years together, black carbon is short-lived and remains in the atmosphere only for days to weeks before it descends as rain or snow.</span></span></p>
</li>
<li>
<p><span style="font-size:11pt"><span style="font-family:Calibri,sans-serif">Black carbon absorbs solar energy and warms the atmosphere. When it falls to earth with precipitation, it darkens the surface of snow and ice, reducing their <strong>albedo</strong> (the reflecting power of a surface), warming the snow, and hastening melting.</span></span></p>
</li>
<li>
<p><span style="font-size:11pt"><span style="font-family:Calibri,sans-serif">India is the second largest emitter of black carbon in the world, with emissions expected to increase dramatically in the coming decades, with the Indo Gangetic plains said to be the largest contributor.</span></span></p>
</li>
</ul>
<p style="margin-right:0in"><span style="font-size:11pt"><span style="font-family:Calibri,sans-serif"><strong>Brown carbon</strong></span></span></p>
<p style="margin-right:0in"><span style="font-size:11pt"><span style="font-family:Calibri,sans-serif">Black carbon is primarily released by high-temperature combustion and brown carbon is emitted mainly by biomass combustion.</span></span></p>
<p style="margin-right:0in"> </p>
<p style="margin-right:0in"><span style="font-size:11pt"><span style="font-family:Calibri,sans-serif"><strong>Blue carbon</strong></span></span></p>
<p style="margin-right:0in"><span style="font-size:11pt"><span style="font-family:Calibri,sans-serif">Blue carbon is the term for carbon captured by the world's ocean and coastal ecosystems. Sea grasses, mangroves, and salt marshes along our coast "capture and hold" carbon, acting as something called a carbon sink.</span></span></p>
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