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Lead Josh Latham

Advisor Zelalem Bedaso

Advisor Andrew Rettig


In remote areas with little infrastructure there is a lack of in situ soil moisture data and these areas are often most affected by seasonal rains and droughts. This research project proposes to create an in situ sensor system consisting of two units capable of recording soil moisture, soil temperature, air temperature, humidity, and precipitation amounts. These units will be completely self-contained and self-reliant. A full solar power system will be built with solar panels, battery, and charging controller allowing for over a year of sustained in situ data collection. Collected data will be transmitted to servers using the Iridium satellite communications network with daily-collated data transmissions. This data will be stored in a database on local servers and available on the Internet for analysis. The aim of these sensor units is to prototype the hardware, develop the software, and define the protocols needed to create an in-situ collected soil moisture database. Once these two systems are complete and have undergone stateside field-testing, additional funding will be sought to create additional units to enable deployment of a wide area network of sensors across various environments in Ethiopia, where there is a lack of such monitoring data. The soil moisture data collected by this sensor network will have many environmental science applications including drought analysis, subsistence farming sustainability efforts, remote sensing calibration, baseline climate data for pedogenic carbonate formation for paleo-environment reconstruction (Breecker et al., 2009, Bedaso et al., 2011), and further understand the significance of soil carbonate formation and its uses in atmospheric carbon sequestration efforts (Washbourne et al., 2012).