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A research paper by Gowariker have used multiple and power regression involving 15 independent variables for long range forecasting of monsoon rainfall in India. They have also argued that, when most of the independent variables are 'favourable' almost invariably the monsoon rainfall is normal. In this note we formalize this approach using a parsimonious logistic regression model. The probability of a normal rainfall can be assessed in most cases using only five of the 15 variables.

The NASA Earth Radiation Budget Experiment (ERBE), flying aboard multiple satellites, is providing new insights into the climate system. Monthly averaged clear-sky and cloudy sky flux data derived from the ERBE are used to assess the impact of clouds on the Earth's radiation balance. This impact is examined in terms of three quantities: longwave,
shortwave, and net cloud forcing. Overall, clouds appear to cool the Earth-atmosphere system.

Sunita Narain says that ozone pollution increases risk in Delhi, which is dangerous for health.

In October 2010, nine ministries and commissions of China jointly issued Guidance on the Strengthening of Dioxin Pollution Prevention [Ministry of Environmental Protection of People’s Republic of China (MEP) 2010], which requires key dioxin-emitting industries to carry out comprehensive actions to reduce dioxin emissions.

Some legitimate questions have been raised over the green credentials of wind turbines. Politics must not block research where it is needed. (Editorial)

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