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The following appears on Page 15 of the "National Action Plan on Climate Change" released on July 1, 2008 by the Inidian national government (italics added): 

1.4 Observed Changes in Climate and Weather Events in India

There are some observed changes in climate parameters in India. India's Initial National Communication, 2004 (NATCOM 1)5 to UNFCCC has consolidated some of these. Some highlights from NATCOM  and others are listed here. No firm link between the documented changes described below and warming due to anthropogenic climate change has yet been established.

  • Surface Temperature

At the national level, increase of -0.4 C has been observed in surface air temperatures over the past century. A warming trend has been observed along the west coast, in central India, the interior peninsula, and north-eastern India. However, cooling trends have been observed in north-west India and parts of South India.

  • Rainfall

While the observed monsoon rainfall at the all-India level does not show any significant trend, regional monsoon variations have been recorded. A trend of increasing monsoon seasonal rainfall has been found along the west coast, northern Andra Pradesh, and north-western India (+10% to +12% of the normal over the last 100 years) while a trend of decreasing monsoon seasonal rainfall has been observed over eastern Madhya Pradesh, north-eastern India, and some parts of Gujarat and Kerala (-6% to -8% of the normal over the last 100 years).

  • Extreme Weather Events

Instrument records over the past 130 years do not indicate any marked long-term trend in the frequencies of large scale droughts and floods. Trends are however observed in multi-decadal periods of more frequent droughts, followed by less severe storm droughts. There has been an overall increasing trend in severe storm incidence along the coast at the rate of 0.011 events per year. While the stress of West Bengal and Gujarat have been observed in Orissa, Goswami 6 et al, by analyzing a daily rainfall data set, have shown (i) a rising trend in the frequency of heavy rain events, and (ii) a significant decrease in the frequency of moderate events over central India from 1951 to 2000.

  • Rise in Sea Level

Using the records of coastal tide gauges in the north Indian Ocean for more than 40 years, Unnikrishnan and Shankar 7 have estimated, that sea level rise was between 1,06-1,75 mm per year. These rates are consistent with 1-2 mm per year global sea level rise estimates of IPCC.

  • Impacts on Himalayan Glaciers

The Himalayas possess one of the largest resources of snow and ice and it glaciers form a source of water for the perennial rivers such as the Indus, the Ganga, and the Brahmaputra. Glacial melt may impact their long-term lean season flows, with adverse impacts on the economy in terms of water availability and hydro generation.

The available monitoring data on Himalyan glaciers indicates that while recession of some glaciers has occurred in some Himalayan regions in recent years, the trend in not consistent across the entire mountain chain. It is accordingly, too early to establish long-term trends, or the causation in respect of which there are several hypotheses. Under the National Action Plan, these data will be updated and refined continuously and additional reliable data will be collected.