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Change and efffect of Climate


Fatema Miah:

I apologise to readers for your waiting in anticipation for my continuous output of  research topic on Climate and sharing in articles for yoo readers read. I am afraid to disclose that I was taken ill to hospital for 18 days. With your best wishes du’as and Allah’s grace here I am back.

Back to the topic Climate: As I wrote before, here I summarise; The global impact on cryosphere, such, ice sheet is melting, calving away and sea level rising from the melting ice.  1/6 portion of it adds to sea water and rise sea level. Ice sheets are fast melting result of global warming.

Further for information and learning; Positive albedo causes and retain accumulation, negative causes ablation and results to a section gets calved away, called calving. This added to sea level rise. 1/6th part of  ablation goes into sea and causes level to rise.

It is concerning issue that ice sheets on water; lakes, sea and land melting rapidly. The pictures of last century to this century 1942 to 1972 then to 2004 showing, same as the graphs shows  high rated melting from accumulation to Ablation to water level, it is sample like efffect causing ice melting in Alaska lake.

More concerning issue is sea level rise. There are Most effecting area, vulnerable to climate Change is Mekong Delta in Vietnam, Bangladesh is also vulnerable equally along other West African countries. Sea level rise effecting salinification. It’s damaging the land soil fertilization disabling crops growing capacity of crops growing land.

The climate change impact on oceans are; pollution, acidification and heat oceans observe vast volume of heat and the large amount of carbon dioxide heating up ocean water from top to deep level bottom, causing coral bleaching, reefs are dying. Heated water causing more precipitation normal usual anticipated weather expected pattern.

What action to be taken for Methane? Since we are only anxious about co2 ho2 requires attention too. Can anything be done to prevent thermohaline collapse?

Steve Jackson replied, “The obvious way is to attempt to reduce CO2 emissions asap to prevent too much methane release but I’m not hopeful. Other possible might be capping it off and somehow capturing it. It could be used as fuel even as CO2 is only 1/25th as damaging as methane.”

A largely concerning, alarming issue is the methane gas. Large volume of methane gas accumulated beneath the surface in Alaska.  “Methane gas has a global warming potential that’s around 25 times greater than carbon dioxide.” Saying our Climate scientists.  Permafrost (frozen ground) regions of Alaska, Siberia and Canada may become “net releasers of methane if they thaw” .

There is potential thinking about ways to recycle methane for our power energy.  “Old organic matter would be exposed that could decompose and release significant methane stocks that are currently ‘locked away’. If this does occur, then this could initiate a positive feedback mechanism adding to warming”.

Climate models are used to project global warming based on potential ‘Representative concentration pathways’. These are four scenarios produced by the IPCC to span a range of emissions trajectories for this century.

The human race stands at the dawn of a new epoch of Earth’s history. An epoch which could see changes in the Earth’s climate that will change the face of our planet, Anthropocene.

“Ocean circulation is the result of a delicate balance of heat energy and salinity. In the Atlantic, the thermohaline circulation brings warm waters northwards, including to the UK, before they cool and sink to the bottom of the ocean either side of Greenland, propelling a southward flow of cold water at depth. An influx of fresh water, or heat energy, could disrupt the circulation and potentially lead to its collapse. This wouldn’t be as quick as disaster movies may have led you to believe, but it would have knock-on effects all around the planet, including disrupting the summer monsoons in India and West Africa.”