AEMET METEOROLOGICAL RADAR (JATA TOWER)

LOCATED IN VIZCAYA (BASQUE COUNTRY)

Dinnteco monitors sites protected with the DDCE remotely.

 

All monitoring is carried out in areas of high probability or density of thunderstorms. All facilities have had serious incidents or direct lightning strikes in the past.

 

We do not use in-house methods such as lightning counters or storm warning systems, but instead hire the services of Meteorage, a leading company in the sector due to its methodology, which provides results with the lowest range of error.

 

  • The tower being studied is owned by the Basque Government and is managed by ITELAZPI, located in the VIZCAYA area (PAIS VASCO, SPAIN). This tower houses the service of the Meteorological Radar of AEMET (Spanish State Meteorology Agency) of the Basque Country and is located in an area of high incidence of lightning (area with a lightning density level (Ng) of 5).

 

  • Before the installation of the DDCE100, ITELAZPI informed us that there had been direct strikes on the tower with significant electrical damage.

 

  • In the 2 years of the study (2015 - 2016), there was NO direct strike on the tower, nor within the 100 m radius of coverage

 

  • During this period (2015 - 2016) there were 96 strikes in the 2 km around the tower, with the following results:

 

  • The nearest strike was 6 kA (negative), located over 100 metres away (recorded on July 1, 2015 at 18:09:29 hours). All other strikes were more than 100 metres away from the TOWER


Photo 1. JATA Tower (AEMET)

Conclusions

  • It can be seen that although the average intensity of negative strikes is over 14.5 kA, there are several strikes of significant intensity, such as the one recorded on August 22, 2015 of 33,300 A (Negative) 1.3 km from the tower. This suggests that an electrical installation should be protected considering potential lightning strikes of these intensities or greater.
  • It has been proven that DDCE compensates the varying electrical field in its immediate surroundings, preventing ascending streamers from forming, and thus direct strikes from ocurring. The actual data shows that the risk of lightning strikes increases as the storm moves away from the point where DDCE is installed, given that the DDCE compensates the surrounding electrical field, which will increase as the distance from the DDCE increases.

 

  • Therefore the EFFECTIVENESS OF THE DDCE in this 2 year study (JATA Tower) in an area of high lightning density (Ng = 5), is 100% on direct lightning strikes on the protected structure and 100% on strikes within the area of its 100 metre radius of coverage.

 

  • The DDCE only affects the electric field which appears in its immediate surroundings. It has NO influence on what happens in the cloud, or on the number of storms that occur in the area, or how long they last, as is logical.
GRAFICOS_DDCE-torre de jata