Reference: Water crisis in parched northern China, Bangkok Post, August 26, 2009
The Chinese kept meticulous weather records for thousands of years and these records show a recurring pattern of extreme droughts and floods. The most severe drought in recent history was the drought and famine of 1877 - a time when atmosphereric carbon dioxide was under 300 ppm. The aridity of northern China can also be understood in terms of the expanding Gobi desert now encroaching on Beijing. Droughts in China are natural events. They are not caused by carbon dioxide emissions from fossil fuels.