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Net primary production (NPP) in the Yellow River Basin, China, during 1982-1999 was estimated with the CASA model using satellite data. The yearly NPP (NPPt) tended to increase during 1982-1999 throughout the Yellow River Basin. A large mean annual NPP for each grid cell was indicated in both the upper and lower reaches, and a low value was indicated in the middle reaches.

food safety China lists illegal additives China has come out with its first official compilation of 17 illegal food additives used in the country. The banned substances include boric acid, commonly used as an insecticide but also mixed with noodles and meatballs to increase elasticity, and industrial formaldehyde, used in making soap and drains cleaner but also used as a common

The international treaty drawn up to tackle ozone-destroying substances is gearing up to curb greenhouse gases.

Surface ozone variability at Pune (an urban location) and nearby rural locations has been studied using KI solution chemical method. The measurement showed well-marked diurnal cycle of ozone concentration with minimum at sunrise and maximum at noon hours.

Aerosols above the Himalaya may alter regional thermostat nano-sized pollutants were for the first time found reacting with each other above the Himalaya. Scientists from the Universite Blaise Pascal, France, said these ultra-fine pollutants are combining to form aerosols

Environment Minister Patali Champika Ranawaka yesterday announced that the Vienna convention has provided a sum of US$ 490 million for the protection of the ozone layer.
Minister Ranawaka made this announcement at a felicitation ceremony organized by the parliament to felicitate him on his election as the President of the Vienna Convention in Doha Qatar recently.

Around 13 megacities have so far been identified as ABC hotpots. Bangkok, Beijing, Cairo, Dhaka, Karachi, Kolkata, Lagos, Mumbai, New Delhi, Seoul, Shanghai, Shenzhen and Tehran where soot levels are 10 per cent of the total mass of all human-made particles. ABCs can reduce sunlight hitting the Earth's surface in two ways.

This year

Increasing amount of soot, sulphates and other aerosol components in atmospheric brown clouds (ABCs) are causing major threats to the water and food security of Asia and have resulted in surface dimming, atmospheric solar heating and soot deposition in the Hindu Kush-Himalayan-Tibetan (HKHT) glaciers and snow packs.

IMD's long range forecast for the seasonal rainfall over the country as a whole and over different homogenous regions except northwest India have been accurate. However, the seasonal rainfall over northwest India and rainfall during July for the country as a whole have not been accurate.