Campbell CM10K Specifikace stáhnout pdf (Strana 55)

Pyranometer. Instrument to measure the heating power of radiation, in particular of

radiation coming from the sun (300-2800 nm). The pyranometer measures solar radiation

flux density (watts/m

) from a field of view of 180 degrees. Solar radiation measurements

usually vary as a function of sun position, season, cloud cover, atmospheric composition and

any other physical/chemical variables that filter irradiance.

Radiation Shield. Device that reflects solar radiation to shield it from a sensor (usually a

temperature sensor). TEAM uses an aspirated radiation shield (MetOne) that actively isolates

the sensor chamber wall from external direct solar radiation by driving air from the bottom of

the shield through a fan. Passive radiation shields do not actively isolate the sensor chamber

but instead rely on a series of interconnected hollow plates that shield the air heated by the

external radiation.

Relative Humidity. Variable that measures the ratio of the actual vapor pressure in the air

with respect to the saturation vapor pressure. The relative humidity is expressed as a percent.

Sampling Unit. The sampling unit is defined as the smallest indivisible unit of the total

population selected for sampling. The two major types of sampling units used in TEAM are

points and areas. The sampling unit for the TEAM Climate Protocol is a point.

Sensor. Sensors are the instruments that make the actual measurements of given climatic

variables. Suitable sensors accurately translate environmental change into measurable

electrical properties by outputting a voltage, changing resistance, outputting pulses, or

changing states.

Sensor Calibration Form. Field form to keep track of sensor calibration information such as

date when sensor was sent for calibration, serial numbers of sensor in calibration and

replacement sensors, etc. All information from the Sensor Calibration Form needs to be

uploaded to the TEAM portal where it will be stored as downloadable metadata.

Site Metadata Field Form. Field form to collect information on the physical characteristics

of the site where the climate station is installed such as distance to main obstacles, substrate,

slope, sky profile, etc. All information from the Site Metadata Field Form needs to be

uploaded to the TEAM portal where it will be stored as downloadable metadata.

Siting process. This is the process that describes the specific rules needed to deploy a

climate station as a function of physical characteristics of the site, height and distance from

obstacles, specific sensor requirements, etc. The siting process is decribed in detail in Section

2.4 of the TEAM Climate Protocol.

Solar Panel. A device that captures solar energy and transforms it into electrical energy. In

the context of the TEAM Climate Protocol, this energy is used to power the data logger,

sensors and radiation shield. The solar panel also charges the battery so that it can power the

station at night or during cloudy days. We recommend the use of a 40W-2.2 Amp solar panel

to fulfill the power requirements of the climate station.

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Campbell CM10K Specifikace Strana 55