Station Network Description Pilot Balloon Data

We are processing the data. We will be adding information to this page as soon as it gets processed. Sorry for the delay.

Station network description.

The Lake Titicaca Field Experiment station network was formed by 7 main stations which served as pilot balloon operation centers. This stations were Belén, Challapata, Conima, Guaqui, Huayllata, Puno and Taraco. Puno station, which by January 2003 was already part of the SALLJEX pilot balloon stations, changed its sounding frequency during the field experiment. The 7 stations performed high frequency pilot balloon launches between January the 3rd and January the 9th 2003.

Measurements taken include hourly pilot balloon launches, except Puno, where the frequency was 3 hours. The readings also include higher frequency (15 minutes) 1.5 m temperature recordings, surface wind estimation and sky observations. Hourly rainfall and morning cloud photography were also performed. The main station was Huayllata, located on Santa Rosa de Huayllata community. Here a few radiosonde launches were also performed, as well as local measurements by an automatic station.

The network was enhanced by the installation of 5 maximum and minimum temperature thermometers between Huayllata and Ilave. 2 of the thermometers were located to the southwest of Ilave. Automatic raingauges were also installed in some islands as Taquile, Amantani, Soto and one at Huayllata.

The selection criteria was based on: 1. Proximity to Lake Titicaca; 2. Representativity of the studied region; 3. Position with respect to the other stations, in order to ease future data analyses; 4. Accessibility and facilities.

Click here for a larger view of the station network.

Pilot balloon data.

So far corrected pilot balloon sounding data are available. This information can be found in ASCII format. The archives have "COR" and "WIN" extensions, and they have been produced by the program "CORRIGE". The ascent rates considered were of 3.2 m/s for 30 gram balloons and 1.6 m/s for party balloons. However, you must take into account that the data located on this page is still being exposed to quality control, therefore we suggest to use this data just for simple qualitative analyses, but not for a deep research topic yet. We will inform you as soon as the data is totally reliable.

We have prepared a data availability table, which shows which data has been collected. To enter click here.

The following archive contains all the pilot balloon information gathered on the experiment. It is a tarred and zipped file. It has around 1 MB, therefore it can fit on a floppy disk. Again, be aware that the data is not totally reliable.


The following links will allow you into enter to individual archives per station.

  • Belén data.
  • Challapata data.
  • Conima data.
  • Guaqui data.
  • Huayllata data.
  • Puno data.
  • Taraco data.