Climate and Weather

It has been dominated by reports of  a major cyclone Thane that lay centered on the the 29th December 2011 near latitude 12.30N and longitude 83.00E, about 300 km east-southeast of Chennai (Tamilnadu) and 480 km north-northeast of Trincomalee (Sri Lanka). Earlier reports related to the cyclone Thane indicate predictions and cyclone warnings made by the IMD for the north of Tamil Nadu and the south Andhra Pradesh coast along with possibility of heavy rains and severe winds and warnings for fishermen to refrain from going into the sea.

Later reports indicate that Cyclone Thane has hit the landfall between the Union territory of Puducherry and neighbouring Cuddalore district in Tamil Nadu at about 9 am leaving behind a trail of devastation followed by later reports of weakening of the cyclone activity and predictions of heavy rainfall over Kerala, south interior Karnataka and north interior Tamil Nadu

The initiative on management of natural resources through appropriate interventions aimed at:

The National Action Plan on Climate Change (NAPCC) is a policy document prepared by the Prime Minister's Council on Climate Change. It has been prepared keeping in mind that India's economic need to tap its natural resources needs to be tempered with the need to maintain ecological balance.

The Ganges river system originates in the Central Himalayas, and extends into the alluvial Gangetic Plains and drains into the Indian Ocean at the Bay of Bengal. In the upstream mountainous regions, hydropower is the main focus of development with mega and micro projects either under construction or being planned in both Nepal and India.

After the main river channel reaches the plains, it is highly regulated with dams, barrages and associated irrigation canals. All this infrastructure development and abstractions affects the river’s flow regime and reduces flows, which, in turn, impacts downstream water availability, water quality and riverine ecosystems. Furthermore, there are concerns that climate change is likely to exacerbate the water scarcity problem in the Ganges Basin. Therefore, modeling the hydrology of the basin is critical for estimation, planning and management of current and future water resources.

The most affected will be Tamil Nadu followed by Puducherry, Andhra Pradesh and Kerala leading to floods, overflowing of dams and damage to property. Assessments of the earthquake in Sikkim are now ready as information is finally available.

Guest post by : Aarti Kelkar-Khambete

The news this fortnight has been dominated by the north-east monsoon in South India, mainly in Tamil Nadu and Kerala. Periyar, Vagai, Krishnarajasagar, Mettur and Chemberampakkam reservoirs have either reached full capacity or are expected to in the next few days. Areas downstream of Vagai reservoir received flood warnings.

In the cities of Tamil Nadu, heavy rains and inadequate infrastructure have led to damage to life and property, with 10 people dead in two separate incidents. 

Winter precipitation has begun in Kashmir, with the higher reaches receiving snowfall. 

Article and media courtesy: International Rivers