Very exciting. I’ve been working on something similar, though smaller in scale (just our farm in western Washington State [USA], between Seattle and the Cascade Mountains. I’ve been experimenting with the MB7040 I2CXL-MaxSonar-WR sensor, Particle.io Photons for MCU, communications and cloud connectivity along with Weather and Battery Shields from SparkFun, for accurate primary temperature, humidity, etc. and power management, as well as a few DS18b20 for additional temperature measurements.
I seem to be maintaining a project log in the community forums over at Particle.io.