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Física ambiental

Descripció

Estació meteorològica - Informació general

Overview of the radiometric and meteorological station

 

Radiometric and meteorological station is located where the roof of the Polytechnic School building of the IIP (41.96 º N 2.83 º E 110m ASL) and covers DIFFERENT CLIMATIC radiation and continuously since late 1993. The acquisition systems and sensors have been Purchased with grants from the Research (Research DG) of the Generalitat of Catalonia, CIRIT (Interministerial Council for Research and Technological Innovation), the Polytechnic University of Catalonia, MCI (Ministry of Innovation and Science) and University of Girona itself. Some of the material belongs to the Catalan Institute of Energy (Catalonian). It also makes maintenance and acquisition of irradiance measurements to update the Solar Radiation Map of Catalonia, for the Catalonian.

Although a weather station in a building does not meet all the requirements (location, height of the instruments on the ground, this features, etc..) Standard to be considered, the fact that the various measurements of Radiative and meteorological variables, as well as Profiles of atmospheric and digital retrodispersió Images of the sky, all concurrent, and having all the instruments in the offices of the Department of Physics of the University, is a big advantage in the implementation of monitoring and maintenance routines, allow to achieve high quality data .

The automated measurements are (each second) and all sensors are divided between two units of acquisition: a Campbell CR10 datalogger and a CR1000 for meteorological variables for radiometric.

The measurements promedien or integrated into different intervals (5 min in the case of CR10, and 1 minute if the ENB CR1000) and Flushed continuously to a personal computer, which are processed at the same time was building a database. Some information is also presented in this website. retrodispersió Information about atmospheric images of the sky is Flushed directly to their own storage systems.

Conduct daily maintenance of protocol and quality control, consisting of a check and dessecants levels of individual instruments, and equipment cleaning domes, control, communications and computers and time of dataloggers, among other tasks. Data files are also reviewed later.

 

data                  




       



 

 

 

 

 

Here you can find the most relevant information available instrumentation.

 

Environmental temperature and relative humidity:

Sensor:

Vaisala HMP 35AC of

Features:

Humidity measurement with PT100 temperature measuring sensor HUMICAP ®

Measure:

Every second

Registration:

Average every 5 minutes

 temp

 

 

 

 

Barometer:

Sensors:

Of Earth and Atmospheric Sciences .. eZ430 Inc. (EASi)

Features:

Barometer piezoresistència Wheatstone bridge integrated with silicon on the Diaphragm. Temperature compensated

Measure:

Every second

Registration:

Average every 5 minutes

 baro

 

 

 

 

Precipitation (rain):

Sensor:

Of Earth and Atmospheric Sciences .. eZ430 Inc. (EASi)

Features:

Rain Gauge with rocking electric generation system to dump momentum. Funnel 8 '. Without heater for snow.

Measure:

The labeling of mpulsos

Registration:

Total since midnight, every 5 minutes

 pluv

 

  

 

Speed and Wind Direction:

Sensor:

Anemocinemòmetre panel and Euro-II

Features:

Eight-bit absolute optical encoder (resolution 1.4 °) with decoupling tachometric Optoelectronic generator (0.000 to 1.000 Hz) minimum speed 0.3 m / s

Measure:

Every second

Registration:

Average wind speed, direction of the average standard deviation of the unit vector direction, even every 5 minutes

 ane

 

  

 

Irradiance:

 

Irradiance is measured in three different regions of the ELECTROMAGNETIC SPECTRUM:

  • Erythemal UV irradiance (λ <0.4 μm)

  • Shortwave solar irradiance (0.28 <λ <2.8 μm)

  • Irradiance infrared, long wave, thermal or terrestrial (2 μm <λ <100 μm)

 

Erythemal UV irradiance:

 

Sensor:

UV pyranometer from Kipp & Zonen EST

Features:

Robertson-Berger type sensor. Measured The voltage is converted into erythemal irradiance for the UVI index

Measure:

Every second

Registration:

Average every minute

uv       

 

 

Global solar irradiance:


 

Sensor:

Kipp & Zonen CM11 pyranometers

Features:

Thermopylae classified as "secondary standard" by the World Meteorological Organization (WMO). Nearly flat spectral response between 0:28 mm and 2.8 μm

Measure:

Every second

Registration:

Average and standard deviation of each minute

 cm11 cm11_2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Sensor:

Li-Cor pyranometer LI200SA

Features:

Silicon diode. spectral response between 0.4 and 01.01 μm

Measure:

Every second

Registration:

Average and standard deviation of each minute


licor  

 

 

Photosynthetic Photon flux (PPFD):

 

 

 

 

 

Sensor:

LI190SA Quantum sensor Li-Cor

Features:

Silicon diodes. Spectral response limited to the band photosynthetic PAR (Photosynthetically Active Radiation, 0.4 - 0.7 μm). Filters for a response proportional to the wavelength.

Measure:

Every second

Registration:

Average every minute


 ppfd

 

 

Direct solar irradiance:

 

Sensor:

Kipp & Zonen CH1 Pirheliòmetre, mounted on a follower Kipp & Zonen 2AP

Features:

Silicon diode mounted on a tube that focuses directly at the Sun with a field of view (FOV) of 5 º. Spectral Response 0.2 - 4 μm

We also measured the temperature sensor with Pt100 resistance

Measure:

Every second

Registration:

Average and standard deviation of each minute


  directa

 

 

 

 

 

 

 

 

 

 

 

 

Diffuse solar irradiance:

 

 

 

  

 

Sensor:

Kipp & Zonen CM11 pyranometer with ombrejador system mounted on a follower Kipp & Zonen 2AP

Features:

Thermopylae classified as "secondary standard" by the World Meteorological Organization (WMO). Nearly flat spectral response between 0:28 mm and 2.8 μm

Measure:

Every second

Registration:

Average and standard deviation of each minute

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Infrared irradiance:


 

 

Sensor:

Kipp & Zonen CG1 Pirgeòmetre with ombrejador system mounted on a follower Kipp & Zonen 2AP

Features:

Using a specially designed silicon window. Nearly flat spectral response between 0.3 mm and 2.2 micron. Have an incident field of vision of 150 º (IFOV, incidence Field of View)

Measure:

Every second

Registration:

Average and standard deviation of each minute

 

 


cg1_1   cg1_2

 

 

 

 

 

 

 

  

 

Whole Sky Camera:

 

 

Sensor:

Hemispheric vision digital camera (Whole Sky Camera) with ombrejador system mounted on a follower Kipp & Zonen 2AP

Features:

The size of the sensor is ½ inches., The resolution is 1360 x 1024, pixel size is 4.65 x 4.65 μm, the pixel format is 3X8 bit, and the output is IEEE 802.3. The exposure time is set to 1000 μs opening in the diaphragm 16 (the minimum)

Registration:

Every minute in JPG and BMP format every 15 minutes

Other:

Image capture is limited to daylight hours

 

 

 

 

 

Ceilòmetre:

 

 

 Sensor:

 

Ceilòmetre CL-31 Vaisala.

 

Features:

Allows retrodispersió atmospheric profiles and determine the height of the base of the clouds, among other applications. It is based on LIDAR technology (Light Detection And Ranging) and incorporates a laser diode that emits light pulses (910 ± 10 nm at 25 ° C) in the vertical direction. ), The repetition rate is 10.0 kHz and the vertical resolution is 10 m. The measurement range is from 30 m 7620 m, measured at heights of up to three layers of clouds.

Registration:

Every 12 seconds


 

 

 

  cl31_1 cl31_2 

 

 

 

 cl31_v1 cl31_view2