Climate and Weather

This presentation by ACWADAM deals with the issue of groundwater management under the climate change scenario in India. Climate change is a change in the statistical distribution of weather over periods of time that range from decades to millions of years. The causes are -variations in solar radiations, plate tectonics, volcanism and change in earths orbit & axis.

This presentation by ACWADAM on earth system deals with the interactions between the four elements that make up this system. The complexity of the earth system, in which spatial and temporal variability exists on a range of scales, requires that an organized scientific approach be developed for addressing the complex, interdisciplinary problems that exist.

The presentation by ACWADAM on earth system deals with the four elements that make up this system. Earth science generally recognizes four spheres, the lithosphere, the hydrosphere, the atmosphere, and the biosphere; these correspond to rocks, water, air, and life. These four interdependent parts or the earth's spheres are described as:

• the lithosphere, which contains all of the cold, hard, solid rock of the planet's crust (surface), the hot semi-solid rock that lies underneath the crust, the hot liquid rock near the center of the planet, and the solid iron core (center) of the planet
• the hydrosphere, which contains all of the planet's solid, liquid, and gaseous water,
• the atmosphere, which contains all of the planet's air, and
• the biosphere, which contains all of the planet's living organisms.

Floods, rains, droughts

There have been reports of flooding as well as incessant rains in the northern parts of India such as Delhi, Punjab, Haryana, Chandigarh, Uttar Pradesh, Rajasthan as well as the northeast such as Assam, Arunachal Pradesh. At the same time, reports indicate that parts of Madhya Pradesh have been facing severe drought while parts of Himachal Pradesh indicate sudden drops in temperature with reports of snowfall in certain areas. Reports from  West Bengal also indicate extensive flooding in certain parts of the state.

Waterbodies/ Rivers

• Dams on the Himalayas: Environmentalists demand scrapping of projects in Assam, Manipur and Arunachal Pradesh
• Involve people to conserve Himalayas, stop big dams: Environmentalists argue
• Uttarakhand government halts work on a hydel project: priests and devotees resist the submergence of a temple 

“It is only by mixed organic farming in harmony with Nature that India can sustainably provide abundant wholesome food, and meet every basic need of all – to live in health, dignity and peace.” Bhaskar Save