Sentences with phrase «drought during recent decades»

Published assessments of historic changes in drought during recent decades have suggested that the frequency and area of droughts have been increasing.

Not exact matches

As a result, California's per capita water use has declined in recent decades, meaning that additional short - term water conservation in response to acute shortages during drought conditions has become increasingly challenging.

None of these could have been caused by an increase in atmospheric CO2, Model projections of warming during recent decades have greatly exceeded what has been observed, The modelling community has openly acknowledged that the ability of existing models to simulate past climates is due to numerous arbitrary tuning adjustments, Observations show no statistically valid trends in flooding or drought, and no meaningful acceleration whatsoever of pre-existing long term sea level rise (about 6 inches per century) worldwide, Current carbon dioxide levels, around 400 parts per million are still very small compared to the averages over geological history, when thousands of parts per million prevailed, and when life flourished on land and in the oceans.