Although there are many other vulnerability factors, those below have been selected for analysis due to their relative importance for food availability and access as identified in Part 2 of the report. The impact of climate variability and extremes on agriculture and food security: an analysis of the evidence and case studies. Inter-seasonal Climate extremes ■ i -i., Climate data are aggregated over cropping areas smoothed for small geographical scale events, especially in large countries. The production and import data time series have been detrended by applying a LOESS approach.158 Detrending refers to removing a trend from a time series, where a trend usually refers to a change in the mean over time. Figures 29 and H show in white the countries where part of the production (or imports) variability is explained by climate indicators (and the correlation is statistically significant).