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| System |   Solar
with battery storage. |
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| Location | Northern Alaska at latitudinal tree line along the Agashoskok River in the Noatak National Preserve, 95 kilometers Northeast of Kotzebue, Alaska. | ||
| Description | Autonomous data
acquisition and storage via Campbell Scientific CR1000 data logger and
data transfer via Iridium modem. Visit
http://polar.sri.com/datalogger for system description and
data. The system was designed by SRI International, Polar Field
Services, and
a group of senior-year students from the Worcester Polytechnic
Institute,
Massachusetts. Please contact
"The central goal of this project is to improve our understanding of the controls on tree growth at the latitudinal treeline in northern Alaska." This study, which determines the factors limiting tree growth, e.g., water, nutrients, employs an autonomous data acquisition and relay system gathering meteorological, soil condition, and system health data hourly and relaying daily the information via Iridium satellite to home. See also http://paddy.uaa.alaska.edu/noatak/noatak.html |
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| Data | Air temperature, Precipitation, Solar irradiance, Wind speed, Relative humidity Soil temperature, Soil moisture Battery voltage, PV panel voltage, Enclosure temperature |
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| Comms | Daily transmission of data packets via Iridium satellite modem to server for archiving and web display. |
