Centro per lo studio e la sperimentazione di strumentazione meteorologica

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Observing equipments

 

Automated airport weather stations use a variety of sophisticated equipment to observe the weather.

Wind speed and direction

 
ASOS Ice Free Wind Sensor

A majority of older automated airport weather stations are equipped with a mechanical wind vane and cup system to measure wind speed and direction. This system is simple in design: the wind spins three horizontally turned cups around the base of the wind vane, providing an estimation of the wind's speed, while the vane on top turns so that the face of the vane offers the least resistance to the wind, causing it to point in the direction the wind is coming from and thus providing the wind direction.

The new generation of sensors use sound waves to measure wind speed and direction. The measurement is based on the time it takes for an ultrasonic pulse to travel from one transducer to another, which varies depending on - among other factors - the wind speed. The transit time is measured in both directions for several (usually two or three) pairs of the transducer heads. Based on those results, the sensor computes wind speed and direction. Compared to mechanical sensors, the ultrasonic sensors offer several advantages such as no moving parts, advanced self-diagnostic capabilities and reduced maintenance requirements.
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Microsferics project for lightnings tracking

KWOS is participating to the Microsferics project!​ Look the result on the Real Time Weather page.

Microsferics Lightning Detection Network, MicroLDN, is a low cost, high accuracy experimental lightning detection network currently operating in parts of Europe and North America.

By using off-the-shelf electronic components and custom designed signal amplifier electronics we created a GPS disciplined time-stamping device for the Boltek range of lightning detectors, making them capable of networked lightning locating using the signal Arrival Time Difference locating method.


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Il rilevamento della temperatura atmosferica

Ripropongo un articolo scritto nel 2003.

Il rilevamento della temperatura con i termometri a resistenza ed il calcolo dell’errore nella misura, dovuto alla radiazione solare ( schermi attivi e passivi ).

 

Introduzione

In questa scheda ho cercato di focalizzare l’attenzione su quel tipo di termometri utilizzati spesso nelle stazioni meteorologiche automatiche degli amatori e professionisti: i termometri a resistenza.

Ho anche cercato di spiegare come la radiazione diretta sul sensore, possa influire sulla corretta misurazione della temperatura e quanto sia importante utilizzare la schermatura dello stesso.

La scheda è piuttosto tecnica ma già leggendola, senza soffermarsi troppo sulle formule, vi renderete conto di quanti e quali parametri entrano in gioco per effettuare una precisa misurazione della temperatura.


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Scandriglia weather

All Sky cameras

 

 

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KWOS Coordinates

Grid locator: jn62je

Lat: 42°10' 07.3" N 
(42.168694°) 
Long: 
12°47' 09.8" E     
(12.786056°) 
CQ zone:
 15 
ITU zone:
 28

 
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