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Here is why Rain-bearing Clouds have been thinning out across India in last 50 Years!

India gets around 70 per cent of its annual rainfall and snowfall during the monsoon, from June to September

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Monsoon Clouds,. Wikimedia
  • The study has found that the decline during the monsoon has been 1.22 per cent per decade on an average
  • IMD defines a rainy day as a day when total precipitation is 2.5 mm or more
  • According to the study, the number of rainy days is also declining during the monsoon season at an average rate of 0.23 days for every decade

June 12, 2017: The India Meteorological Department (IMD) has predicted that this year’s monsoon rainfall will be around 98 per cent of the long-period average, which is good news in this drought-prone era. But another study by the same IMD shows a more worrying trend. It has found that rain-bearing clouds have been thinning out across the country over the last 50 years.

The study, published in the IMD journal Mausam, shows that between 1960 and 2010, annual mean low cloud cover (responsible for the bulk of the rainfall) over India has been decreasing by 0.45 per cent per decade on average. Low clouds are declining over various seasons as well, the most significant one being during the monsoons. The study has found that the decline during the monsoon has been 1.22 per cent per decade on an average.

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India gets around 70 per cent of its annual rainfall and snowfall during the monsoon, from June to September.

According to the study, the number of rainy days is also declining during the monsoon season at an average rate of 0.23 days for every decade. This means that the country has lost approximately one rainy day over the last five decades. IMD defines a rainy day as a day when total precipitation is 2.5 mm or more.

“It is for the first time that low cloud cover has been studied in India, so it is a first-of-its-kind study,” A.K. Jaswal, retired scientist from IMD and leader of the study, told indiaclimatedialogue.net. “We have on an average lost one rainy day at each location that was studied across India, and that is of significance.”

As expected, the study found a strong correlation between low cloud cover and the number of rainy days. A thinning of this cloud cover also seems to lead to rising maximum temperature.

“Since monsoon season alone contributes to approximately 70 per cent of annual rainfall, the significant decrease in LCC (low cloud cover) as well as NRD (number of rainy days) in monsoon season during 1961-2010 obtained in this study is a cause of worry,” says the paper.

For the study, observations of cloud cover were made at 215 surface meteorological stations by trained observers who can distinguish low clouds from medium and high ones. Annual low cloud cover was found to have decreased at 61 per cent of the stations studied.

During the monsoon season, the thickest low cloud cover was recorded in 1961 (46.7 per cent), and the thinnest in 2009 (33.5 per cent).

The study found there has been an increase in the low cloud cover over the Indo-Gangetic plains and northeast India, while it has decreased over the rest of the country. The authors say more studies are needed to account for these regional differences.

Rainfall and temperature data was also obtained for all the stations to find out their correlations with the low cloud cover.

Around 60 per cent of the earth’s surface is covered by clouds. They play a critical role in weather and climate by reflecting sunlight, blocking outgoing longwave radiation and producing rain and snow, recycling water vapour and in global energy balance. Cloud cover variability is one of the most uncertain aspects of climate model predictions.

The study says, “At present, it is not known whether changes in cloudiness will exacerbate, mitigate, or have little effect on the increasing global surface temperature caused by anthropogenic greenhouse radiative forcing. Due to their high albedo, low clouds have cooling effect, whereas high clouds trap outgoing infrared radiation contributing to warming of earth’s surface.”

Given that agriculture in India is hugely dependent on monsoon rainfall, there is a strong case for learning to adapt to a thinning low cloud cover.

“We are seeing so many farmer suicides. Agriculture is in lot of stress. And farmers have to adapt to the changing climate by storing water through traditional methods, changing crop patterns, creating ponds to augment groundwater depletion,” said Jaswal.

The study found that while the number of rainy days is decreasing, there is not much change in the total amount of rainfall. This shows a trend towards shorter, heavier bursts of rain. That is bad news, because heavier raindrops can dislodge wheat and rice grains from their stalks. It also means rainwater flows down a slope that much faster instead of percolating underground.

Globally, various factors are being blamed for declining cloud cover — climate change, aerosols and other pollutants. But given the complexities of multiple factors impacting weather, more studies are needed to find the cause.

Though the study does say, “One factor causing decrease in low cloud cover may be the direct effect of aerosols. As aerosols can cool the earth’s surface by reflecting sunlight and warm the aerosol layer by absorbing downward longwave radiation, the lapse rate will decrease and atmospheric stability will increase, suppressing cloud formation and reducing the cloudiness.”

Jaswal however points out that in some studies in other parts of the world, it has been found that aerosols (which form the skeleton of the clouds) can also have a positive impact on the cloud cover. “I hope that someone will take up the logical second part of the study to see what kind of changes are happening within the low cloud cover itself,” he said. Wwhether stratus clouds are increasing or the non-rain making clouds are increasing in the low cloud cover.” (IANS)

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Prince Charles Arrives in New Delhi for two day Visit to Meet PM Narendra Modi

Prince Charles, the Prince of Wales, accompanied by his wife arrived New Delhi for a two-day visit to India to complete their 10-day four-nation tour

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Prince Charles
Prince Charles visits India with his wife for two days. Wikimedia.

New Delhi, Nov 9: Prince Charles, the Prince of Wales, accompanied by his wife, the Duchess of Cornwall, Camilla Parker-Bowles, arrived New Delhi on Wednesday on a two-day visit to India at the final leg of their 10-day four-nation tour that also took them to Singapore, Malaysia and Brunei.

“Their Royal Highnesses Prince of Wales and the Duchess of Cornwall arrive,” the British High Commission in India tweeted.

Prince Charles is scheduled to meet Prime Minister Narendra Modi on Wednesday evening and discuss a wide range of issues, including that of the Commonwealth Heads of Government Meeting (CHOGM) which will take place in April 2018 in the UK.

Prince Charles
Prince Charles arrives in India with his wife. IANS.

Ahead of the royal couple’s arrival, External Affairs Ministry spokesperson Raveesh Kumar said climate change, Sustainable Development Goals (SDGs), economic cooperation, and other bilateral issues would also come up for discussion.

Bilateral trade between India and Britain stands at $12.19 billion. India is the third largest investor in Britain and the second largest international job creator in that country.

Britain is the third largest inward investor in India, with a cumulative equity investment of $24.37 billion for the period April 2000-June 2017

The Indian diaspora in UK is one of the largest ethnic minority communities in the country, with the 2011 census recording approximately 1.5 million people of Indian origin equating to almost 1.8 percent of the population and contributing 6 per cent of the country’s GDP.

This will be Prince Charles ‘s ninth visit to India. He had earlier visited India in 1975, 1980, 1991, 1992, 2002, 2006, 2010 and 2013. (IANS)

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Delhi Smog: Smog turns Delhi into a gas chamber

Writers call to confront the smog.

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Delhi turns into a gas chamber as smog covers the city. wikimedia commons

New Delhi, Nov 8: When acclaimed novelist Amitav Ghosh was writing “The Great Derangement”, a work of nonfiction on the burning issue of climate change, many in literary circles asked him: “Why would you write about something so boring?”

Some two years down the line, as the eyes burn and lungs choke in the “gas chamber” that residents of Delhi find themselves in, his book is a fitting examination of the scale and dangers of climate change.

It was not just a few in literary circles who failed to recognise the problem of climate change; for most of us, it remained something vague. in an interview to this correspondent just ahead the launch of “The Great Derangement”, Ghosh had abruptly asked: “Did you notice the smog that had filled the air just before the onset of winter?”

“I think I did,” I replied. “Well what did you do about it,” he immediately retorted.

Ghosh’s book, however, was a timely response to climate change and deserved much more attention than what it received then.

“Are we deranged,” asks Ghosh in the book and argues that future generations may well think so. “How else to explain our imaginative failure in the face of global warming?” It was his first major book of nonfiction since “In an Antique Land”, and in its pages Ghosh examines our inability — at the level of literature, history and politics — to grasp the scale of climate change.

“In a substantially altered world, when sea-level rise has swallowed the Sundarbans and made cities like Kolkata, New York and Bangkok uninhabitable, when readers and museum-goers turn to the art and literature of our time, will they not look, first, and most urgently, for traces and portents of the altered world of their inheritance? And when they fail to find them, what should they — what can they — do other than to conclude that ours was a time when most forms of art and literature were drawn into the modes of concealment that prevented people from recognizing the realities of their plight? Quite possibly then, this era, which so congratulates itself on its self-awareness, will come to be known as the time of the Great Derangement,” he writes in the book.

Ghosh had added in the interview that, at first, his concerns were about the damage that we are doing to the environment — but climate change is something much bigger.

“When we are talking about environmental impacts, we are talking about specific ecological systems, about specific environments and the ways in which human beings have impacted them. But climate change is something much bigger.

“We are talking about an inter-connected earth’s system, which is changing in ways that after a certain point human beings can’t actually control what is going to happen and that seems to be a situation that we are already in. These changes are occurring in ways that we can no longer impact them. If you look around the world and see what writers are writing about, very few are actually confronting this issue,” he had said.

He also pointed out that, in his opinion, there were no simple or easy solutions.

“What has actually happened is that we have lost the tools, and the ways of thinking, which allow us to understand or even to register what is happening around us. Even if we sometimes find ourselves in the midst of some of these changes, either we are unable to connect it to wider issues of climate change that are occurring or we are unable to think of it in an imaginative way.

“Something is happening, which is going to be, in the long run, catastrophic and yet we are unable to find some story for it,” he maintained.

The fundamental point that Ghosh raised in that interview was that artists, writers and filmmakers have not really given climate change the attention it needs.

He had said that he is “not in the business of finding solutions” but pointed out that one good way to finding a solution is to “understand the gravity and magnitude of the situation we are all in”.

Ghosh suggests that politics, much like literature, has become a matter of personal moral reckoning rather than an arena of collective action. But to limit fiction and politics to individual moral adventure comes at a great cost. The climate crisis asks us to imagine other forms of human existence — a task to which fiction, Ghosh argues, is the best suited of all cultural forms.

A few weeks from now, the smog may fade away and the perils of today may disappear both from the headlines and our minds. But Ghosh’s book will continue to serve as a great writer’s call to confront the most urgent task of our time.( IANS.)

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Editorial Freedom Should be used Wisely in Public Interest says PM Narendra Modi to Media

Prime Minster Narendra Modi on Monday said that editorial freedom should be used in public interest and urged the newspapers to devote space to increase awareness about climate change

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PM Narendra Modi speaks about Editorial Freedom. Wikimedia

Chennai, Nov 6: Prime Minster Narendra Modi on Monday said that editorial freedom should be used in public interest and urged the newspapers to devote space to increase awareness about climate change.

Speaking at the 75th anniversary celebrations of Tamil newspaper Daily Thanthi at the Madras University Centenary Auditorium, Modi said lot of things happen around the world and the editors decide what is important to be published in their newspapers.

He said: “Editorial freedom should be used wisely and in public interest.”

Pointing out the natural calamities occurring around the world at regular intervals, PM Modi urged newspapers to allocate space to increase awareness about climate change.

Narendra Modi said the freedom to write does not in anyway reduce the importance to be accurate and correct, adding that though media outlets may be owned by the private sector, they serve a public purpose, have much social accountability and their conduct should be above board.

editorial freedom
Media must use editorial freedom with public interest, says PM Modi. Wikimedia.

He said technological advancement enables citizens to compare, discuss and analyse the credibility of news and the media should take extra caution to maintain its credibility.

According to him, reform in media can come from within and through introspection.

Observing most of the media discourse revolves around politics, Modi said the nation is made of over a billion people and the media should focus on the people and their achievements.

Citing the spread of mobile phones, Modi said citizen reporting is important in showcasing individual achievements and also helping in the aftermath of natural disasters.

PM Narendra Modi also released a souvenir.

Governor Banwarilal Purohit, Defence Minister Nirmala Sitharaman, Union Minister of State for Finance and Shipping Pon Radhakrishnan, Chief Minister K. Palaniswami and his deputy O.Pannerselvam also participated in the function.

Paying encomiums to the founder of Daily Thanthi S.P. Adithanar and his son Sivanthi Adithan, Palaniswami said the daily would certainly see centenary celebrations.

Leaders of several political parties, law makers, industrialists, movie actors and diplomats attended the function.

Earlier on his arrival PM Modi was received by Purohit, Palaniswami and others at the airport.

From the airport Modi reached the INS Adyar naval base here in a helicopter.

At INS Adyar, Modi had a meeting with Palaniswami and discussed about the rain and relief situation in Chennai and neighbouring districts. (IANS)