Year 2007 meteorological measurements at Governor's Academy and MBL Marshview Farm of air temperature, humidity, precipitation, solar radiation, photosynthetically active radiation (PAR), wind speed and direction and barometric pressure. Sensors conduct measurements every 5 secs and measurements are reported as averages or totals for 15 minute intervals. 15 minute averages are reported for air temperature, humidity, solar radiation, PAR, wind speed and direction and barometric pressure. 15 minute totals are reported for precipitation.
The data file is a summary of daily weather data from the PIE LTER weather station located at Governor's Academy in Byefield, MA. and MBL Marshview Farm in Newbury, MA. On July 30, 2007, Julian Day 211, the weather station was moved from Governor's Academy to the Marshview Farm field station off Rt 1, Newbury, MA approximately 1/2 mile away. The PAR sensor was also changed on July 30, 2007 and was found to be cracked which compromised measurements of PAR prior to July 30. PAR data from Jan 1 to July 30, 2007 at 1645 EST time has been estimated from a Pyranometer to PAR relationship where PAR (uM/m2-sec) = (pyranometer value (kW/m2) X 1982.2) + 1.0783, r2 =0.983. The weather station is solar powered using a Solarex MSX-20 20 watt solar module including a 12V charger and regulator and 12 AH lead acid battery. The system was supplied by Campbell Scientific Inc., The data logger is supplied by Campbell Scientific CR10X-1M data logger with 1 megabyte memory storage module and PC208W Windows data logging software. The enclosure and tower is a Campbell Scientific ENC 12/14 (12” X 14” weather proof enclosure), CM10 (10’ tripod, grounding kit and CM10 guy wire kit. Data telemetry/Communication at Remote Site/Weather station, Governor's Academy - RF 310M, RF Modem for use w/Maxon radios - RF 310, Maxon radio for 148-174 MHZ – 158.34 MHZ - Yagi antenna – Antennex Y1503 3DB 150-174 MHz at Base station, Rowley field station - RF 310B Base station for use w/Maxon radio - FG1563, Omni directional antenna 155-162 MHZ, 3 DB gain Sensors used: Temperature and Humidity Vaisala HMP45C temperature and humidity sensor with solar radiation shield. Specifications: +/- 1% accuracy over – 40 to 60 °C temperature range Precipitation gauge Texas Electronic TE525WS-L, 8” rain gage with CS705 precipitation adapter for snow fall. Specifications: +/- 1% accuracy up to 1 in./hr. Pyranometer Solar radiation, 400-1100 nm, Licor LI200X-L pyranometer, mounted at 3 meter height Specifications: +/- 3% typical accuracy PAR Photosynthetically active radiation, 400-700 nm, Licor LI190SB quantum sensor, mounted at 3 meter height Specifications: +/- 5% calibration, National Institute of Standards Technology Wind speed and direction RM Young 05103 Wind monitor, mounted at 3 meter height Barometric pressure Vaisala PTB101B Specifications: +/- 4 mB @ -20oC to +45o C.
Final data set for Year 2007 Version 01, 18Dec2009, EML metadata level 4-5 compliant. Version 02: November 2, 2012, updated data and metadata. Used MarcrosExportEML_HTML (working)pie_excel2007.xlsm 3/23/12 12:08 PM for QA/QC to EML 2.1.0 Version 03, 09May2013, metadata and data updated to comply with importation to Drupal and LTER PASTA. Used MarcrosExportEML_HTML (working)pie_excel2007.xlsm 3/14/12 12:02 PM for QA/QC to EML 2.1.0