Climate Change

  • This summer, Jaipur’s temperatures are soaring upwards of 40 degree Celsius. Jaipur witnessed its hottest day on April 26 when a temperature of 43.2 degree Celsius was recorded. Of late, at least some parts of the city are beginning to exhibit signs of climate change typical of large cities. With ...
    Amita Bhaduriposted 1 week 58 min agoread more
  • Rising atmospheric carbon dioxide levels may spark a shift towards wetter winters and drier summers, warns a new study based on evidence from climatic history preserved in 65-million-year-old oyster shells. Earlier research shows that about that time, in the Cretaceous period, atmospheric carbon di...
    arathiposted 1 week 3 days agoread more
  • Corals lose their beautiful colours and even die during a coral bleaching event. The corals in the Gulf of Mannar suffered severe losses during the global coral bleaching event that occurred between March and October 2016, according to new data published recently. A joint team of researchers from S...
    arathiposted 1 month 1 day agoread more
  • The gradual change in temperature and rainfall patterns in Darjeeling hills is beginning to affect the production of the famous Darjeeling tea. The maximum temperature in Kurseong has risen by 0.51 degree over the last 20 years while the total annual rainfall dropped by 56 mm and the relative humid...
    arathiposted 1 month 1 week agoread more
  • The mountain range that runs along the west coast of peninsular India from Tamil Nadu through Kerala, Karnataka, and Goa to Maharashtra is known as the Western Ghats and is very well known for its majestic beauty. It is also among the top eight biodiversity hotspots in the world. The Western Ghats h...
    arathiposted 1 month 2 weeks agoread more
  • Lokesh Verma, a farmer from Nainital’s Chanfi village, says this is the third year in a row that he is bearing losses in agriculture. “I have lost around Rs 2 lakh and there’s a debt of Rs 70,000 to pay off. I grow strawberries, guavas and peas in my 15 bighas of land, but there is not enough ...
    arathiposted 2 months 5 days agoread more
  • As the parched Indian subcontinent eagerly awaits the monsoon, all indications are that it will be a normal monsoon, especially since no El Niño is in the offing for 2018.  The long-term monsoon trend has been getting much attention recently. The seasonal total rainfall which has decreased by...
    arathiposted 2 months 1 week agoread more
  • In a significant input for the growing debate on global climate change, a study by researchers at the Dehradun-based Wadia Institute of Himalayan Geology (WIHG) has found that there is a remarkable increase in the concentration of black carbon in the atmosphere near the pilgrim town of Gangotri in U...
    arathiposted 2 months 1 week agoread more
  • Yak--the lifeline of pastoral nomads in high altitudes of the Indian Himalayan region--is facing the threat of gradually rising temperatures in the region.  The increasing trend of environmental temperature at high altitudes is resulting in heat stress in yak during the warmer months of the ye...
    arathiposted 2 months 1 week agoread more
  • In a few weeks from now, the seasonal forecast for the Indian summer monsoon will be announced. Among various parameters that determine the fate of the monsoon is the sea surface temperature, more specifically, the contrast between land and sea temperatures. But what are the parameters that determin...
    arathiposted 2 months 3 weeks agoread more
  • The issue of economic development is intrinsically connected with global warming. The temperature of the planet rises because of indiscriminate exploitation of its resources and destruction of the environment. The effect of global warming further intensifies temporal and spatial variations in precip...
    arathiposted 2 months 3 weeks agoread more
  • Here is more evidence why we need to worry about climate change. A new study says extreme rainfall events are on the rise in India and attributes the trend to man-made emissions, what scientists call anthropogenic warming. Not just this, the trend is likely to become more prominent by mid-century, p...
    arathiposted 2 months 4 weeks agoread more
  • Scientists have developed a hydrogel from the gum of guar (cluster bean) that can increase soil moisture and help farmers save their crops in case of water scarcity.  Hydrogels are a network of polymers that can hold a large amount of water and are extensively used in diapers and sanitary napk...
    arathiposted 2 months 4 weeks agoread more
  • On the eve of the World Water Day, Watershed Organisation Trust (WOTR), made a presentation to the members of the Maharashtra Legislature. The presentation was a part of an event titled Tackling Climate Change in Maharashtra that was presided over by the chief minister, Devendra Fadnavis. The ...
    aarti kelkar kh...posted 3 months 3 days agoread more
  • Small farmers are the key to ending poverty and hunger and promoting sustainable development. In India, small and marginal farmers—those who work on less than two hectares (five acres) of land—constitute 80 percent of all farm households, 50 percent of rural households and 36 percent of the tota...
    Anonymous (not verified)posted 3 months 4 days agoread more
  • Scanty rainfall, depleting groundwater levels, barren farmlands and mass migration of farmers to cities for better livelihood--this is the reality of most of rural India today. Many parts of India are witnessing this growing trend of farmers leaving their lands in search of jobs in cities. Andhra Pr...
    arathiposted 3 months 2 weeks agoread more
  • For a long time now, historians have been using epigraphy to infer the political and economic aspects of the past. In recent times, astronomers have come to realise that it can also be a potent tool to understand the history of astronomy as well as for inferring minute changes in the motion of Earth...
    arathiposted 3 months 2 weeks agoread more
  • Every year, thousands of villages in Maharashtra get affected by droughts. Experts say that the reasons for recurrent droughts include a lack of policy framework, technical knowledge and community participation as well as poor implementation of government programmes. Until 1970, the residents of Ka...
    makarandpurohitposted 4 months 6 days agoread more
  • Water is a crucial part of all societies as it has myriad uses. In India, however, it is of much more importance as over 600 million people make a living off the land. They rely on the monsoon to replenish their water sources and the unpredictable nature of rain leaves them vulnerable. Even today, t...
    Anonymous (not verified)posted 4 months 1 week agoread more
  • This year’s budget was expected to be extensively farmer- and rural-sector oriented. And that is exactly what it turned out to be. The distress in the agrarian sector has intensified and its political implications were rife this year considering the Lok Sabha elections are scheduled next year. The...
    Amita Bhaduriposted 4 months 2 weeks agoread more

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A new phenomenon, urban heat islands in Jaipur indicates that the city has begun to witness the worst of climate change.

This summer, Jaipur’s temperatures are soaring upwards of 40 degree Celsius. Jaipur witnessed its hottest day on April 26 when a temperature of 43.2 degree Celsius was recorded. Of late, at least some parts of the city are beginning to exhibit signs of climate change typical of large cities. With more concrete and asphalt replacing natural vegetation, “urban heat islands” are becoming a reality and Jaipur is a good example of this.

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Scientists study 65-million-year-old rainfall trends to predict future.

Rising atmospheric carbon dioxide levels may spark a shift towards wetter winters and drier summers, warns a new study based on evidence from climatic history preserved in 65-million-year-old oyster shells.

Earlier research shows that about that time, in the Cretaceous period, atmospheric carbon dioxide levels were almost thrice the present amount. It was the most intense greenhouse phase in the history of the earth with unusually high temperature and sea levels. There is also some evidence of torrential rainfall and cyclones. 

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A recent study shows coral bleaching of 2016 caused severe mortality in Gulf of Mannar.

Corals lose their beautiful colours and even die during a coral bleaching event. The corals in the Gulf of Mannar suffered severe losses during the global coral bleaching event that occurred between March and October 2016, according to new data published recently.

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Increasing temperatures, decreasing rainfall and change in relative humidity adversely affect the famous Darjeeling tea production.

The gradual change in temperature and rainfall patterns in Darjeeling hills is beginning to affect the production of the famous Darjeeling tea.

The maximum temperature in Kurseong has risen by 0.51 degree over the last 20 years while the total annual rainfall dropped by 56 mm and the relative humidity by 16.07 percent, leading to a decline in the overall production of Darjeeling tea in terms of green leaf production per hectare. 

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A new study points out that the evapotranspiration from the vegetation over the Western Ghats accounts for one-quarter of the rainfall over peninsular India.

The mountain range that runs along the west coast of peninsular India from Tamil Nadu through Kerala, Karnataka, and Goa to Maharashtra is known as the Western Ghats and is very well known for its majestic beauty. It is also among the top eight biodiversity hotspots in the world. The Western Ghats host over 400 species and seven distinct vegetation types. 

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More than 1000 villages of the state are expected to be affected by a severe water crisis.

Lokesh Verma, a farmer from Nainital’s Chanfi village, says this is the third year in a row that he is bearing losses in agriculture. “I have lost around Rs 2 lakh and there’s a debt of Rs 70,000 to pay off. I grow strawberries, guavas and peas in my 15 bighas of land, but there is not enough water in the hills to irrigate crops properly,” he says.

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Even if the total rainfall recovers, there is no indication that heat waves, droughts, extreme events and widespread floods are about to go away.

As the parched Indian subcontinent eagerly awaits the monsoon, all indications are that it will be a normal monsoon, especially since no El Niño is in the offing for 2018. 

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Regions

A study finds an increased concentration of black carbon in Gangotri region during tourist seasons.

In a significant input for the growing debate on global climate change, a study by researchers at the Dehradun-based Wadia Institute of Himalayan Geology (WIHG) has found that there is a remarkable increase in the concentration of black carbon in the atmosphere near the pilgrim town of Gangotri in Uttarakhand during the two annual tourist seasons of April to June and during September and October. 

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Nomads are beginning to notice increasing heat stress among yaks in the Indian Himalayas.

Yak--the lifeline of pastoral nomads in high altitudes of the Indian Himalayan region--is facing the threat of gradually rising temperatures in the region. 

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Phytoplankton are often early indicators of change in temperatures and can offer potential to extend the lead time of climate predictions.

In a few weeks from now, the seasonal forecast for the Indian summer monsoon will be announced. Among various parameters that determine the fate of the monsoon is the sea surface temperature, more specifically, the contrast between land and sea temperatures. But what are the parameters that determine sea surface temperatures?

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