Remote sensing observation

Within the iFROG project, we aim both at comparing remote sensing observations with ground measurements, and to combine multiple sensor to synergize their measurements.

Precipitation radars

Precipitation radars are vertical profilers that provide vertical profile of reflectivity. One of the most advanced instrument is the Dual-Frequency Precipitation Radar (DPR) onboard of the Global Precipitation Mission (GPM) platform, which operates both in the Ka and Ku bands.
The vertical profiles of reflectivity have an approximate vertical resolution of 125 m, which is similar to the resolution of the MRR. GPM was launched in 2014 in replacement of the Tropical Rainfall Measurement (…)

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Optical data

Optical sensors measure the reflectance from the Earth’s surface. As snow on ground is very bright, it has a strong signature and is thus “easy” to detect (e.g., Gascoin et al., 2015).
However, snow on ground is not directly linked to the rain/snow limit, because snow evolves as a function of multiple processes and melts. As it is not possible to observe snow during its deposition, due to clouds obscuring the scene, we can only observe it the following day.
Within the iFROG project, we (…)

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