Upper
Air and Surface Observation Department
Upper
Air and Surface Observation Department
What is aerology
?
Aerology is a branch of meteorology involving observation and research of
the atmosphere by means of balloons, radiosondes, airplanes etc. Air temperature,
atmospheric pressure, air humidity and wind are the basic and most often
measured factors. Aerology concerns the observation and research of ozone,
radioactivity and some components of long wave radiation.
Praha-Libus
Upper Air Station
The Praha-Libus upper air station is one of the regular WMO
(World Meteorological Organization) aerological
stations.
Station ID : 11520
Name : Praha-Libus
Latitude : 50°01'
Longitude : 14°27'
Altitude : 304,24 m
Schedule : PTU+wind - 00, 06, 12, 18 UTC - daily
ozone - 12 UTC - Monday, Wednesday, Friday from January to April
radioactivity - 12 UTC - the second Tuesday of the January, April, July and October
Aerological
Measurement
- Basic measurement
(atmospheric pressure, air temperature, air humidity, wind)
- Ozone
measurement
- Radioactivity
measurement
Technical
Equipment
Ground Equipment : VAISALA DigiCORA MW21
Radiosondes : VAISALA RS92-KL (LORAN C)
-SGP (GPS)
Balloons : TOTEX-TA 800gr, TX 1200gr
Windfinding System : LORAN C, GPS
History of
Aerological Measurement
> History of the basic measurements
1946 - the first experimental measurements with the LANG military radiosondes at the Praha-Ruzyne airport 1947 - experimental measurements at the Praha-Kbely airport 1948 - the first regular measurements at the Praha-Kbely airport (in the "aerological days" period) 1949 - regular daily measurements at the Praha-Kbely airport (03 CET) 1950 - change of the measurement routine at the Praha-Kbely airport (03 and 15 CET) 1953 - measurements at the Praha-Ruzyne airport (03 and 15 CET) 1954 - installation of radiotheodolit Malachit, measurements with the RZ-49 radiosonde 1957 - change of the measurement routine (term 00, 06, 12 and 18 UTC) 1959 - alternate measurement at the Praha-Ruzyne and the Praha-Kbely airports (term 00, 06, 12 and 18 UTC) 1964 - measurements at the Praha-Ruzyne airport (term 00 and 12 - all basic parameters, O6 and 18 UTC only wind) 1967 - the beginning of the measurement at the Praha-Libus aerological station, irregular measurements (term 00, 06, 12 and 18 UTC - all basic parameters ) 1970 - installation of aerological radar Meteorit 1, measurements with frequency radiosondes RKZ, regular measurements (term 00 and 12 - all basic parameters, O6 and 18 UTC only wind) 1974 - regular measurements (term 00, 06, 12 and 18 UTC - all basic parameters) 1977 - installation of aerological radar Meteorit 2 1991 - measurements with Czech STAR 1 radiosondes with transistor transmitter 1992 - installation of Finnish aerological system Vaisala, measurements with the VAISALA capacity radiosonde 2004 - upgrade of aerological system - installation of Vaisala DigiCORA® MW21 measurements with the VAISALA capacity and digital radiosondes > History of the ozone measurements
1977 - the first experimental measurements with the Brewer Mast ozonesondes and METEORIT system 1978 - regular measurements once per week (every Wednesday) 1979 - irregular measurements during all the year 1982 - change of the measurement routine (three times per week - Monday, Wednesday, Friday in the period January - April) 1992 - measurements with the ECC ozonesondes and DigiCORA system > History of radioactivity measurements
1994 - the beginning of the regular measurements (the second Tuesday of each month) 2000 - change of the measurement routine (the second Tuesday of the January, April, July and October)