Battery: Tempest will likely use a new battery type which boasts a wider temperature operating range, faster charging (requiring less sunlight) and a longer lifetime (many more charge/discharge cycles).
Air temperature: Since we know the thermal capacitance of the device and a few other variables - temp, wind, & solar radiation - we can correct temperature readings to ambient air temps with a high degree of accuracy.
Operating range: Tempest will have the same temperature range as the AIR (-35 to 140 F).
Still no plans to detect or measure snowfall.
Please feel free to apply to be a field tester if you haven’t already!