Current climate models and projections may be inaccurate because measurements are based on guidelines that do not include the effects of trees on the local climate, according to agroforestry experts. This in turn may be hindering effective adaptation by local farming communities, as the true effect of climate change on their crops is not accurately captured. Trees can influence many of the climate factors predicted by modelling, and their effects should be added to climate maps, scientists from the the World Agroforestry Centre (ICRAF) said in a book, How people and trees can co-adapt to climate change, launched last month (1 December). According to the book, enhancing tree cover for agricultural purposes is a good adaptation mechanism.