Experts urged to ratify Minamata Convention to phase out mercury-added products পারদযুক্ত পণ্যের ব্যবহার বন্ধে মিনামাতা কনভেনশন অনুমোদনের আহ্বান সেন্টমার্টিন সৈকতে প্লাস্টিকের আগ্রাসন 72 birds die eating pesticide-treated masakalai Educate girls to save the planet শিশুর সর্দি-কাশি সারানোর ঘরোয়া উপায় 50 Books All Kids Should Read Before They’re 12 24 thousand under 5 children die of pneumonia in Bangladesh annually গ্রিনহাউস গ্যাস কমানোর লক্ষ্যে নানা উদ্যোগ Maldives: Eco-friendly product export destination for Bangladesh

Longer-term thinking ‘needed’ on air pollution


The last major episode to grab the headlines came a year ago when many areas of Britain were blanketed in a noxious brew that turned the skies grey-brown for several days.

At the time, all eyes were focused on the most exotic -sounding ingredient – dust that had been blown up from the Sahara.

Tiny grains from the desert had indeed made the long airborne trek from the desert but most of the problem was caused by a nasty mix of pollutants created here and abroad.

Britain frequently finds itself on the receiving-end of pollution wafted in from the Continent – and more of that is forecast tomorrow with a current of air circling from central Europe across southern France and over the English Channel.

A computer model from the American weather agency NOAA calculates where the air that will be over London tomorrow has come from.

A so-called “back-trajectory” plots the position of a single parcel of air every six hours so you can see its path over the past four days.

The chart also shows that the pollution cloud will generally remain below 500m in altitude which means it is concentrated in a relatively small air space and therefore packs more of a punch.

As often happens, this shows that much of the contamination comes from the industrial sites and major cities of northwest Europe.

Details:  http://www.bbc.com/news/science-environment-32236678

Posted by on Apr 11 2015. Filed under News at Now. You can follow any responses to this entry through the RSS 2.0. You can leave a response or trackback to this entry

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