10/31/12, Boise State University, Dept of Geosciences, Hydrologic Sciences, Jim McNamara Research Director, Pam Aishlin Data Management Data provided herein is for the Shingle Creek Ridge weather station (SCR) of Dry Creek Experimental Watershed, Boise, Idaho. DATA STREAM: 1. Measurement site was installed by Boise State University (Student Dave Eirikkson) of Boise, Idaho, late 2010 with data collection initiated 9/26/2010. Data collection and site maintenance is provided by Boise State University Hydrologic Sciences. Instrumentation installed includes air temperature, relative humidity, wind direction and speed, 4 component radiation, shielded precipitation by Hach OTT weighing bucket gage. One soil moisture sensor and thermocouple was installed at 5 cm depth adjacent to the weather station tower. 2. Data files collected via Campbell Scientific datalogger are telemetered and compiled. This is level 0, raw data (CUAHSI HIS standards). (CUAHSI HIS standards, 0 = raw data, 1 = Quality controlled data that have passed quality assurance procedures such as routine estimation of timing and sensor calibration or visual inspection and removal of obvious errors, 2 = Derived products that require scientific and technical interpretation and may include multiple-sensor data. An example is basin average precipitation derived from rain gages using an interpolation procedure.) 3. Selected hourly timeseries are quality checked and post processed for gapfilling, noise filtering and/or corrected according to established instrument calibrations. For weather data, the timeseries provided herein are shielded gage precipitation, air temperature, relative humidity, solar radiation and windspeed. See our soil measurement data directory for soil data provided. 4. Data as collected and provided is, by protocol in mountain standard time, year-round. SITE NOTES: The Shingle Creek Ridge weather station is located on a low ridge spur within the Shingle Creek headwater catchment. This headwater catchment is overall west-facing, originating on the eastern edge of Dry Creek Watershed as a perennial spring fed tributary to Dry Creek. At 1720 m elevation, SCR is located within the rain-snow transition zone for winter precipitation on the Boise Front. Soil at the site is primarily sandy loam, with depth varying from 0-100 cm above fractured crystalline bedrock. Vegetation includes grass, low brush, tall shrub and sparse Ponderosa pine and Douglas fir. DATA/INSTRUMENT NOTES: 'Measurements taken once every minute. Depending on instrument, hourly averages or hourly samples taken and stored in Table1. AIR TEMPERATURE - Operational at initial installation. RH-Air temperature meaurement is conducted with RH-T sensors, Campbell Scientific CS215. Precision is inferred as 0.1 C. Data provided is quality control level 1 (CUAHSI HIS standards as noted above), hourly average values BAROMETRIC PRESSURE - none PRECIPITATION - Cumulative precipitation by Ott Pluvio2 400 precip gauge, installed 2 meters or higher above ground surface, equipped with alter-type rain gage shields. Collection orifice is 8 in (20.3 cm). Catch capacity is 12 inches. Precision is 0.1% of full scale, inferred as .01 mm, while accuracy is 0.5% of full scale. Ridgetop precipitation gage operational from Oct 7, 2007. Hillslope raingage installed and operational Nov 17, 2008. Rain gages originally measured in inches, converted to mm. Rain gages recalibrated Nov 17, 2009 to output values in mm instantaneous hourly values. Raw data is processed for noise removal and output as cumulative precipitation. Gap-filled data provided is quality control level 2, compiled yearly and available upon request. RELATIVE HUMIDITY - Operational at initial installation. RH-Air temperature meaurement is conducted with RH-T sensors, Campbell Scientific CS215 CSL, range 0-100% RH. Accuracy at 20 C is +/-2% 10 to 90% RH, +/-4% 0-100% RH. Precision is inferred as 0.01. Data provided is quality control level 1, hourly average values. SNOW DEPTH - Ultrasonic snowdepth sensor-Maxbotix sonar component (Eric Boe Design). Thermister/program for snow depth sensor output is erroneous prior to Fall 2012, resulting in erroneous snowdepth values, however, correction to snowdepth has been conducted by use of weather station air temperature data applied to raw snow depth sensor voltage time series. Additionally, snow depth data presented has been processed for noise removal, wherein obvious erroneous output values are replaced with -6999. Alternately processed snowdepth data that involves smoothing is available upon request for data prior to 2014. 2014 and thereafter smoothing is applied to snowdepth data via matlab processing. Data provided is quality control level 2, instantaneous hourly values, precision inferred as 0.01 cm. SOLAR/RADIATION - Initial installation included a 4 component Hukseflux net radiometer (Model NR01). This sensor includes pyanometers, downward and upward facing, to measure short wave radiation, as well as pyrgeometers to measure far infrared radiation. Spectral response is 0.305 to 2.8 microns and 4.5 to 50 microns, accuracy +/-10% for daily totals. Data provided by these sensors is output in Watts per square meter with 0.01 precision inferred. shortwave radiation is reported as raw, signed incoming. Net radiation is calculated as incoming sw radiation - outgoing sw rad + temperature corrected incoming lw rad - temperature corrected outgoing lw rad. Net radiation values were initially provided by the datalogger program, 2010 - 2012, using uncorrected longwave values, The results differ greatly when corrected longwave values are used to calculate net radiation. To acquire the corrected longwave values, see separate 4 component data file for 4 component data. Additional IR Radiometer and 4-Component temperature corrected longwave data is available by request. Solar data is quality control level 1 (CUAHSI HIS standards as noted above). WIND - Operational at initial installation. 3002 RM Young Wind Sentry anemometer-wind vane windset, Campbell Scientific. Range is 0 - 112 mph, 50 m/s. +/- 0.5 m/s, 1.1 mph; 355 degrees direction available, +/- 5 degrees. Threshold 0.8 m/s, 1.8 mph at 10 degrees displacement. Precision is inferred as 0.1 m/s, 0.1 degrees. Data is provided at quality control level 1, instantaneous hourly values for wind speed and direction. 7/12/16 emplaced 034B MetOne wind sensor . . SOIL MOISTURE, TEMPERATURE - data assessed as invalid to date. 'CR10XTCR Thermistor Temperature (Located on multiplexor to be used as ref temp for thermocopules) '1 Copper Constantine Thermocouples (MUX), '1 CS616 Soil moisture sensors(MUX), moved from mux to CR1000. 'Note: As of 10/18/2010 one out of four soil moisture sensors installed -- located ~5 m south of main 'tripod at 5cm depth. **Currently calibrated using default settings. ANNUAL ERRORS/GAPS/UPDATES: 2009- Jan 19, 2009 - April 8, 2009, no wind data due to sensor/wiring failure. Erroneous snow depth data output noted early 2009, Judd snowdepth sensor sent for repair October 2009. 2010 - data 9/26/2010 through 12/31/2010, hourly. Minor gap 10/14/2010 1700 to 10/19/2010 1600 filled with -6999. 2011 - rain gage cable found chewed early January 2011, cumulative precipitation data corrected with additional processing. data gap 1/11/2011 - 1/21/2011, filled with -6999. 2012 - Numerous data gaps 5/31/12 to 6/20/12 due to solar regulator failure. gap filled w/ -6999 2013- Datalogger program has been changed to output corrected longwave data, therefore net radiation values are now calculated using corrected longwave radiation values, incoming and outgoing, plus raw shortwave radiation values, incoming and outgoing (net = sw in + signed value sw out + lw in - lw out). RH-T sensor filter replaced 9/26/13. snow depth data not corrected as of 11/15/2013. precip data has been corrected as provided. remaining variables presented have been qualitatively verified as reasonable as of 11/15/2013, as well as gap filled with -6999 no data values where relevant. 2014 - snowdepth data is smoothed via matlab, 'rloess', parameter 3 applied varies from 0.003 to 0.01. Diurnal signal is present due to sonar data variably corrected to air temperature with air T sensor colocated. Improvement is suggested by placing air T sensor halfway up the installation post. no gaps. 2015 - sporadic minor data gaps occur late 2015 due to low power, battery quality issues. 11/3-4; 12/14-25; site visit 12/26; some snow catch loss suspect. 2016 - gaps 2/16-4/1; site visit 1/23. gap 9/23, 9/27-10/22. Precipitation is corrected at the end of these gaps: From 2/16 - 2/22 11.9 mm pcp accum; 2/22-2/29 10.4 mm; 2/29 13:00=330.4 mm 3/30 14:00=427.4 possibly 97 mm; Bucket 9/27 =202.9 10/22 =248.8, therefore 45.9 mm pcp. Feb 15 suspect potential snow loss in pcp catch. Dec 12-31 suspect potential snow loss in pcp catch. Jan - Feb occasional nodata values/error occurs in the outgoing shortwave radiation. Wind direction sensor fail Jan to April. 7/12/16 emplaced 034B MetOne wind sensor. 9/29/16 Removed RM Young for use at BRW, keeping 034B in place. 2017 - Jan 8-10 undercatch is suspected at SCR relative to adjacent DCEW sites. 2018 - gap 10/22 1500, 11/1 1700. 11/20/18 upload new OS, new program. installed new echo snowdepth sensor, assess snowdepth data for potential wind swing at installation. 12/21/2018 program change. Sporadic errors occur in shortwave radiation out,spring. Consequently, no data value (-6999) is presented where those errors affect calculation of net radiation. Note raw snowdepth data is noisy, matlab and manual smoothing post processing has been applied. Raw data is available. Significant noise occurs in May precipattion data. Pcp data gap early July to Oct 18, 2018. Pcp events occurred early Oct, possibly earlier times during this gap period and are not recorded herein. 2019 - Data gaps due to low power in winter, 2/24-3/3. Errors occur in shortwave radiation out, Feb - April 2019. Consequently, no data value (-6999) is presented where those errors affect calculation of net radiation. 7/30/19 guyed snowdepth sensor. Fall 2019 sporadic gaps occur due to low power. Dual snowdepth sensors, data provided herein is from the original sensor. Note raw snowdepth data is noisy, matlab and manual smoothing post processing has been applied. Nov-Dec snowdepth data quality is non optimal. Raw data is available. 2020 - Data gaps due to low power in winter, Jan - Feb. Dual snowdepth sensors, data provided herein is from the original sensor. Errors occur in shortwave radiation out, Feb - June 2020. Consequently, no data value (-6999) is presented where those errors affect calculation of net radiation. Note raw snowdepth data is noisy, matlab and manual smoothing post processing has been applied. Also, pcp manually corrected for total weight following nodata periods in January. Raw data is available. 2021 - Solar component, shortwave outgoing incurs errors jan - mar. Consequently, no data value (-6999) is presented where those errors affect calculation of net radiation. NOTE: CURRENT YEAR DATA IS PROVISIONAL. All data sets may be error corrected at year-end. Precipitation data and snow data undergo smoothing and additional data filter processing at year end in contrast to raw data that may be published "realtime".