They conclude: "Trends based on short records... do not in general reflect long-term climate trends".
Climate trends and global crop production since 1980.
But many climate sleuths acknowledged that while the broad climate trends were clear, much remained uncertain.
Scientists usually consider a few decades of data is required to assess climate trends.
Climate trends "should not be calculated for periods of less than 30 years," said Stocker.
However, natural variability of Earth's climate system can degrade capabilities for identifying climate trends.
Lobell, D., Schlenker, W. & Costa-Roberts, J. Climate Trends and Global Crop Production Since 1980.
Rights & permissionsfor article Natural variability of Southern Ocean convection as a driver of observed climate trends.
Geoengineering holds out the promise of artificially reversing recent climate trends, but it entails enormous risks.
Bengtsson, L., Hagemann, S. & Hodges, K. I. Can climate trends be calculated from reanalysis data?
In this paper, potential future climate trends were predicted based on CMIP5 simulations in this region.
