Frontier III

Develop new capabilities that focus on processes at interfaces in the atmosphere 

CentNet

EOL has been developing a large network of ground-based sensors to help address scientific challenges and to facilitate research in the biogeosciences, hydrology, and urban meteorology, in addition to the mesoscale meteorological research traditionally supported by tower networks.  This network of up to 100 stations that can be deployed on spatial scales from 1 m to 100 km in support of surface exchange research and a wide variety of bio-geophysical field studies and will allow direct research-quality measurements of all components of the surface energy and water budgets, complemented by measurements of key elements of the carbon budget.  CentNet is designed to minimize set up and maintenance time, with Radio Frequency (RF) communications used as much as possible to reduce cabling, and two-way communication via the Internet for each station for real-time data display and control.  The system is also designed to have the ability to cycle power on any sensor, e.g. one that is not reporting. 

In FY 2016, CentNet’s capabilities were significantly enhanced through the replacement of hygrometers, the addition of sonic anemometers, building new TRH sensors, building 60 new Data System Modules (DSMs) based on inexpensive and efficient Raspberry Pi, the addition of 60 more motes to connect radiation and soil sensors, adding more solar panels and tower mounts, purchasing new optical disdrometers, and embedding a new microprocessor into new integrated net radiometers. EOL also used our newly installed altitude/temperature calibration chamber to calibrate all of the in-situ sensors necessary to support of the VERTEX (FY 2016 – 2017) and Perdigão (FY 2017) deployments and to achieve high quality data sets for these field programs.