Figure 6
From: Climate Based Predictability of Oil Palm Tree Yield in Malaysia
Left column: lagged correlation coefficients between yearly FFB yields and precipitation (grey line), solar radiation (orange line), maximum temperature at 2-m height (sky blue line), minimum temperature at 2-m height (bluish green line), relative humidity at 2-m height (reddish purple line), potential evapotranspiration (blue line). Right column: lagged correlation coefficient between yearly FFB yields and ENSO (orange line), and lagged partial correlation coefficients between yearly FFB yields and Modoki (grey line), Indian Ocean Dipole Mode (sky blue line), Ningaloo Niño (bluish green line), Asian Monsoon (reddish purple). Calculations are done for Malaysia (top row), Peninsular Malaysia (middle row) and Sabah/Sarawak (bottom row). Black dots denote correlation coefficients significant at the 95% level (according to a random-phase test). The figure was generated by R software version 3.4.1 (https://www.R-project.org/) with package “ggplot2” version 2.2.1.
