Hydrology, climatology, and biology interact over a wide range of spatial and temporal scales. Continuous interaction among climate, soils, landuse, and vegetation shape the hydrology and ecology of a landscape. Long-term measurements of such variables at various time and space scales provide a foundation for understanding ecosystem processes, and document changes in the local, regional, and global environments.
Adam B. Mazurkiewicz, Alfred B. Levno, Anne W. Nolin, Christopher Daly, Craig Creel, David Greenland, Donald L. Henshaw, Frederick A. Bierlmaier, Greg Downing, John Moreau, Julia A. Jones, Mark E. Harmon, Michael H. Unsworth, Richard H. Waring, Roswell C. Mersereau, Sherri L. Johnson, W. Arthur McKee
Experimental design; The Program for Hydroclimatological Measurement at the H.J. Andrews Experimental Forest by Don Henshaw, Arthur McKee, Alok Sikka 18 Aug 1995
http://andrewsforest.oregonstate.edu/research/component/climate/clim95.pdf; <p>
Much of the early climatological measurements on the Andrews Forest were associated with the investigation of the initial small watersheds experiment (Watersheds 1, 2, 3). The Climatic Station on WS 2 was installed in 1956 to measure precipitation and a hygrothermograph was added in 1958. The High-15 station was established to measure precipitation in 1964 in conjunction with small watersheds 6, 7, 8, and has evolved into a secondary meteorological station. A more general set of modeling needs led to the installation of the Primary Meteorological Station in 1972 to characterize the meso-scale environment. Originally, solar radiation, air temperature, dew point temperature, and windspeed were collected. Along with precipitation from the climatic station on WS 2, these were the primary climatic variables needed for the models predicting the rates at which materials accumulate or move through ecosystems (Waring et al., 1978). Significant improvements to the station were made in ; | Processing procedures; ; <p>A description of the early processing history and instrumentation for the Primary Meteorological Station (PRIMET), 1972-1989, is posted here:</p>
<p>http://andrewsforest.oregonstate.edu/data/studies/ms01/ms001_primet_1972... | Field methods; ; <p>Please follow this link to see a general description and history of air temperature measurements for these stations:</p>
<p>http://andrewsforest.oregonstate.edu/data/studies/ms01/meta/air.htm
<p>Temperature data has been measured with a variety of instruments:</p>
<ul><li>Thermocouple wire: Probe is type T thermocouple soldered from thermocouple wire</li>
A three-level hydroclimatological network for data monitoring was established in 1994. The networks at each level are nested to form a coordinated program of data acquisition and measurement. A future vision of linking the benchmark meteorological stations with regional weather stations to expand the future scope of studies was also considered in designing this network. The first-level in this top-down approach consists of Benchmark Meteorological Stations (BMS) and Benchmark Stream Stations. The BMS are designed to represent the environment across the Andrews. These stations are intended to provide complete, long-term, high temporal resolution, meso-scale hydroclimatological data. The location of the BMS is based on factors such as elevation, aspect, vegetation gradients, and accessibility. Collected meteorological parameters are generally standardized across the BMS as well as methods and instrumentation. Secondary Meteorological Stations also follow standardized methods and serve similar purposes but are somewhat limited in meteorological parameters collected. The Primary Meteorological Station (PRIMET), Central Meteorological Station (CENMET), Upper Lookout Meteorological Station (UPLMET), and Vanilla Leaf Meteorological Station (VANMET) are the four Benchmark Stations, Climatic Station at Watershed 2 (CS2MET) and the Hi-15 Meteorological Station (H15MET) are Secondary Stations.