CNR 4 net radiometer

The CNR 4 net radiometer measures the energy balance between incoming short-wave and long-wave Far Infrared (FIR) radiation versus surface-reflected short-wave and outgoing long-wave radiation.

The CNR 4 net radiometer consists of a pyranometer pair, one facing upward, the other facing downward, and a pyrgeometer pair in a similar configuration. The pyranometer pair measures the short-wave radiation. And the pyrgeometer pair measures long-wave radiation. The upper long-wave detector of CNR 4 has a meniscus dome. This ensures that water droplets role off easily and improves the field of view to nearly 180°, compared with a 150° for a flat window. All 4 sensors are integrated directly into the instrument body, instead of separate modules mounted onto the housing. But are each calibrated individually for optimal accuracy.

Two temperature sensors, a Pt-100 and Thermistor, are integrated for compatibility with every data logger. The temperature sensor is used to provide information to correct the infrared readings for the temperature of the instrument housing. Care has been taken to place the long-wave sensors close to each other and close to the temperature sensors. This assures that the temperatures of the measurement surfaces are the same and accurately known. Which improves the quality of the long-wave measurements.

Technical Characteristics:

Spectral range: 300 to 2800 (short wave) nm

Spectral range: 4500 to 42000 (long wave) nm

Sensitivity: 5 to 20 µV/W/m²

Temperature dependence of sensitivity (-10 ºC to +40 ºC) : < 4 %

Response time: < 18 s

Non-linearity: < 1 %

Operating temperature: -40 to 80 °C

Ventilation power (of the optional CNF 4 ventilation unit): 10 W

 
Citation proposal
(2014) . CNR 4 net radiometer. https://geoportal.mountaingenius.org/geonetwork/srv/api/records/626281a8-6b60-499e-a6da-49d4895ed064
 

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626281a8-6b60-499e-a6da-49d4895ed064   XML
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WWW:LINK-1.0-http--link
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OGC:WMS-1.1.1-http-get-map
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GLG:KML-2.0-http-get-map
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WWW:DOWNLOAD-1.0-http--download
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WWW:DOWNLOAD-1.0-http--download
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WGS 84 (EPSG:4326)
 

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  • Climatology, meteorology, atmosphere
  • Geoscientific information
  • Environment
 

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Coupled resource
 
 

Classification of data and services

Coupled resource
Coupled resource
 
 

Keywords

GEMET themes ( Theme )
  • solar radiation , climate , pollution , research
GEMET themes ( Theme )
  • solar radiation , climate , pollution , research
GEMET themes ( Theme )
  • solar radiation , climate , pollution , research
GEMET themes ( Theme )
  • solar radiation , climate , pollution , research
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  • NEXTDATA
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  • NEXTDATA
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  • SHARE , , CNR 4 net radiometer
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  • Concordia
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  • NEXTDATA
Keywords ( Theme )
  • SHARE , , CNR 4 net radiometer
Keywords ( Place )
  • Concordia
Keywords ( Theme )
  • NEXTDATA
Keywords ( Theme )
  • SHARE , , CNR 4 net radiometer
Keywords ( Place )
  • Concordia
Keywords ( Theme )
  • NEXTDATA
Keywords ( Theme )
  • SHARE , , CNR 4 net radiometer
Keywords ( Place )
  • Concordia
 
 

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W


 

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Date ( Publication )
2014-08-04T19:08:00
 

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Conformity
 

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Restrictions on access and use

 

Responsible organization (s)

Contact for the resource
Organisation name
Ev-K2-CNR
Email
evk2cnr@evk2cnr.org
 

Responsible organization (s)

Contact for the resource
Organisation name
Ev-K2-CNR
Email
evk2cnr@evk2cnr.org
 

Metadata information

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Organisation name
Ev-K2-CNR
Email
metadata@evk2cnr.org
Date stamp
2019-12-04T19:16:29
Metadata language
eng
Character set
UTF8
 
 

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Conformance class 1: invocable

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Technical specification
 

Conformance class 2: interoperable

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Limitation
 
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Limitation
 
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Conformance class 3: harmonized

 
 

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