Future droughts will be influenced by climate change.
Climate questions: Has global warming stopped?
All measurements of the climate system indicate the long term warming trend is continuing. It is inappropriate to use short term data sets to determine long term trends.
1 June 2011 | Updated 22 March 2013
Variations in global-average temperature over the past century can be measured in the near-surface air, the lowest 10 km of the atmosphere (the troposphere) and in the ocean.
All measurements indicate a long-term warming.
The surface of the Earth has warmed by about 0.74 ˚C since the start of the twentieth century.
This long-term warming trend is overlaid on short-term fluctuations due to such factors as El Niño and La Niña.
Data over the past decade provide little insight into long-term trends; the period is simply too short.
Nevertheless, the past decade has been the warmest in the instrumental record.
Sea surface temperatures and ocean heat content for the upper 300m and 700m of the ocean show long-term warming.
Global average sea level has risen by 17cm during the 20th century.
Based on information written by CSIRO on behalf of the Department of Climate Change http://www.climatechange.gov.au/climate-change/~/media/publications/science/hot-topics-globalwarming-v2.ashx [external link] and modified to reflect recent research findings. Published with permission of the Department of Climate Change.
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