Kessler Atmospheric & Ecological Field Station PicoNet

The KAEFS PicoNet data studies the small-scale spatial variability of rain and validates polarimetric and conventional rainfall retrieval algorithms. A network of six rain gauges is deployed at KAEFS. The network has 6 “nodes” at locations scattered across the station (see figure below). The smallest spatial separation between two nodes is 350 m and the largest separation is 1500 m. Each node in the KAEFS PicoNet includes three tipping bucket rain gauges and an optical disdrometer. A disdrometer is used to measure the sizes and numbers of rain particles. Data from these instruments is recorded using data loggers and then transmitted via radio links to a central hub. The hub, which will be housed at the Atmospheric Radiation Measurement (ARM) Program Site, serves as the "brain" of the PicoNet. It coordinates traffic on the telemetry network, synchronizes the clocks of the data loggers, and most importantly collectsand pre-processing of all incoming data. The resulting data streams can be available to the general public in real-time via an internet link. The data will are also archived.

Figure 1. Location of the nodes in the KAEFS PicoNet. The minimum spacing is 350 m and the maximum spacing is 1500 m

For more information on the Pico-Net, please contact Dr. Phillip Chilson at


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