Using code to leverage GIS tools is tricky, but rewarding.
Measuring the surface area of a leaf is quite simple with Matlab.
While there's a bit of a learning curve, once you get the hang of plotting with ggplot2 you'll never look back.
The fog box is our laboratory setup for comparing measurements from our leaf wetness sensors to what we might expect to actually accumulate on plants.
Precipitation data for California is scattered across a number of different services.