Meteo Observations at IGMK

This page is read only. You can view the source, but not change it. Ask your administrator if you think this is wrong.
====== OTT Parsivel 2 at Ny-Ålesund ======
//Mentor: [[https://geomet.uni-koeln.de/institut/beschaeftigte/krobot|Pavel Krobot]], Data: [[https://geomet.uni-koeln.de/institut/beschaeftigte/ebell|Kerstin Ebell]]//

{{:wiki:nya:parsivelnya.jpg?400|}}

[[http://www.ott.com/web/ott_de.nsf/id/pa_parsivel2_examples_e.html|OTT]] Parsivel 2 on the roof of the [[http://www.awipev.eu/|AWIPEV]] atmospheric observatory in Ny-Ålesund, Svalbard

===== Principle =====
The OTT Parsivel 2 is a laser-based optical system for complete and reliable measurement of all types of precipitation. The size range of measurable liquid precipitation particles is from 0.2 to 8 mm. For solid precipitation particles, the size range is from 0.2 to 25 mm. The size range is divided into 32 classes. The particle velocity range is 0.2 to 20 m/s and is divided into 32 classes. The precipitation particles are categorized as follows:
  * Drizzle
  * Drizzle with rain
  * Rain
  * Rain, drizzle with snow
  * Snow
  * Snow grains
  * Freezing rain
  * Hail
For liquid precipitation, the rain rate can be determined from the derived raindrop-size and velocity distributions. In the case of solid precipitation, the precipitation rate is highly uncertain due to variable particle shapes, densities, and fall velocities. Wind and turbulence affect the measured velocities, leading to high uncertainties in the assumed particle fall velocities. This can also affect the particle type classification and might result in a misclassification of particles.

===== Data =====

If you are interested in receiving data, please contact [[kerstin.ebell@uni-koeln.de|Kerstin Ebell]]

[[https://atmos.meteo.uni-koeln.de/~hatpro/dataBrowser/dataBrowser1.html?site=Ny-Alesund&date=0&UpperLeft=Parsivel-Overview | Quicklooks]]

===== History ====
^  Period  ^  Place  ^  Project  ^
| 23 June 2022 - today (new instrument) | [[http://www.awipev.eu/|AWIPEV Ny-Ålesund]], Svalbard | [[http://www.ac3-tr.de| (AC)3]] |
| 27 April 2017 - 22 June 2022 | [[http://www.awipev.eu/|AWIPEV Ny-Ålesund]], Svalbard | [[http://www.ac3-tr.de| (AC)3]] |

===== Specifications =====
^  Parameter  ^  Specification  ^ 
| Wavelength | 650 nm (visible laser beam, color: red) |
| Output power (peak) | 0.2 mW|
| Measuring surface | W x D 180 x 30 mm |
| Particle size of liquid precipitation | 0.2 … 8 mm |
| Particle size of solid precipitation| 0.2 … 25 mm |
| Particle velocity  | 0.2 … 20 m/s |
| Rain rate Minimal intensity  | 0.001 mm/h drizzle/rain  |
| Rain rate Maximal intensity | 1,200 mm/h  |
| Prod. Temporal Resolution | 60 s  |
| Rain rate accuracy | ±5 % (liquid) / ±20 % (solid) |
| Dimensions (HxWxD) | 670 x 600 x 114 mm |
| Power supply | 10 ... 28V DC, reverse polarity protection |
| Current drawn |Electronics 65 mA at 24 V DC / Heating 2/4 A; 12/24 V DC |


===== References =====

**Ebell, K., C. Buhren, R. Gierens**, G. Chellini, **M. Lauer, A. Walbröl**, S. Dahlke, **P. Krobot, and M. Mech**, 2025: Impact of weather systems on observed precipitation at Ny-Ålesund (Svalbard), //Atmos. Chem. Phys.//, 25, 7315–7342, [[https://doi.org/10.5194/acp-25-7315-2025]].