pvm
Differences
This shows you the differences between two versions of the page.
Both sides previous revisionPrevious revisionNext revision | Previous revision | ||
pvm [2020/08/31 22:18] – [Doppler lidar History] bpospich | pvm [2021/03/01 11:18] (current) – [Link to current observations] bpospich | ||
---|---|---|---|
Line 52: | Line 52: | ||
===== Link to current observations ===== | ===== Link to current observations ===== | ||
- | Current observations at [[http://gop.meteo.uni-koeln.de/ | + | Current observations at [[http://atmos.meteo.uni-koeln.de/ |
Line 58: | Line 58: | ||
===== Measurement examples ===== | ===== Measurement examples ===== | ||
- | [[http:// | ||
- | Current VAD plot:\\ | ||
- | {{http:// | ||
- | |||
- | //The figure shows a velocity azimuth display (VAD): vectors give direction and speed of horizontal wind at time and height. Vectors pointing upward indicate south wind, vectors pointing to the right indicate west wind. | ||
- | Color shading gives the backscatter coefficient. | ||
- | // | ||
+ | {{wiki: | ||
+ | {{wiki: | ||
+ | //Example time series of PVM observations (left: Quicklook for the polycristalline module, right: Irradiance and efficiency)// | ||
===== PVM History ===== | ===== PVM History ===== | ||
^ Period | ^ Period | ||
Line 75: | Line 71: | ||
===== Technical specifications ===== | ===== Technical specifications ===== | ||
- | ^ Parameter | + | ^ Parameter |
- | | Wavelength / nm | + | | STC power |
- | | Pulse energy / $\mu$J | + | | Current |
- | | Pulse width / ns (m) | 150 (22.5) | + | | Voltage |
- | | Repetition Rates / s | + | | Short circuit current |
- | | | 1.67 | avg.beam i.e. N_avg pulses averaged and processed => dead time=0.67s | + | | Open circuit voltage |
- | | | 300 | Doppler Beam swing (DBS) with 3 beams ([azi,ele] = [0, | + | | System voltage |
- | | | 900 | Velocity azimuth display (VAD) with 36 beams ([azi,ele] = [i*10, | + | | Dimensions |
- | | | 3600 | vertical slice (RHI) with 18 beams ([azi,ele] = [109,i*10]) | | + | | Weight |
- | | N_avg | 15000 | number of pulses to be averaged in one ' | + | |
- | | resolution / m | 30 | range resolution (adjustable from 15m onward) | + | |
- | | Field-of-View / deg | 360 x 90 | free alingment of the beam | | + | |
- | | maximum range / m | 9000 | adjustable, but restriced to sufficent backscatter (aerosol, cloud droplets or ice crystals) | + | |
- | | velocity resolution / ms< | + | |
- | | velocity precsision / ms< | + | |
- | | max velocity / ms< | + | |
- | | Aperture / mm (area / | + | |
- | | Size / cm³ | + | |
- | | Average Power consumption / W | 140/250 [600] | (wo/w Heating/ | + | |
- | | Weight | + | |
- | | Manufacturer | + | |
- | | Year | 2011 | | | + | |
- | | Instrument | + | |
- | + | ||
pvm.1598905096.txt.gz · Last modified: 2020/08/31 22:18 by bpospich