Weather data collected at the Macleish Field Station in Whately, MA during 2015. This is a copy of the whately_2015 data from package `macleish`: <https://github.com/beanumber/macleish>.
Format
For both, a data frame ([dplyr::tbl_df()]) with roughly 52,560 rows and 8 or 9 variables.
The following variables are values that are found in either the `whately_2015` or `orchard_2015` data tables.
All variables are averaged over the 10 minute interval unless otherwise noted.
- when
Timestamp for each measurement set in Eastern Standard Time.
- temperature
average temperature, in Celsius
- wind_speed
Wind speed, in meters per second
- wind_dir
Wind direction, in degrees
- rel_humidity
How much water there is in the air, in millimeters
- pressure
Atmospheric pressure, in millibars
- rainfall
Total rainfall, in millimeters
- solar_radiation
Amount of radiation coming from the sun, in Watts/meters^2. Solar measurement for Whately
- par_density
Photosynthetically Active Radiation (sunlight between 400 and 700 nm), in average density of Watts/meters^2. One of two solar measurements for Orchard
- par_total
Photosynthetically Active Radiation (sunlight between 400 and 700 nm), in average total over measurement period of Watts/meters^2. One of two solar measurements for Orchard
Details
The Macleish Field Station is a remote outpost owned by Smith College and used for field research. There are two weather stations on the premises. One is called `WhatelyMet` and the other is `OrchardMet`.
The `WhatelyMet` station is located at (42.448470, -72.680553) and the `OrchardMet` station is at (42.449653, -72.680315).
`WhatelyMet` is located at the end of Poplar Hill Road in Whately, Massachusetts, USA. The meteorological instruments of `WhatelyMet` (except the rain gauge) are mounted at the top of a tower 25.3 m tall, well above the surrounding forest canopy. The tower is located on a local ridge at an elevation 250.75m above sea level.
`OrchardMet` is located about 250 m north of the first tower in an open field next to an apple orchard. Full canopy trees (~20 m tall) are within 30 m of this station. This station has a standard instrument configuration with temperature, relative humidity, solar radiation, and barometric pressure measured between 1.5 and 2.0 m above the ground. Wind speed and direction are measured on a 10 m tall tower and precipitation is measured on the ground. Ground temperature is measured at 15 and 30 cm below the ground surface 2 m south of the tower. The tower is located 258.1 m above sea level. Data collection at OrchardMet began on June 27th, 2014.
The variables shown above are weather data collected at `WhatelyMet` and `OrchardMet` during 2015. Solar radiation is measured in two different ways: see `SlrW_Avg`or the `PAR` variables for Photosynthetic Active Radiation.
Note that a loose wire resulted in erroneous temperature reading at OrchardMet in late November, 2015.