ABSTRACT Accurate measurements of water vapor in the upper troposphere and lower stratosphere (UTLS) are needed for the climate studies. In January-June 2010 the LAPBIAT atmospheric sounding campaign took place in Sodankylä, northern Finland (67.4º N, 26.6º E) to perform profile measurements of wate...
| Main Authors: | , , , , , |
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| Format: | Text |
| Language: | English |
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| Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1055.4293 http://projects.knmi.nl/geoss/wmo/TECO2010/IOM-104-TECO2010/2_8_Kivi_Norway.pdf |
| Summary: | ABSTRACT Accurate measurements of water vapor in the upper troposphere and lower stratosphere (UTLS) are needed for the climate studies. In January-June 2010 the LAPBIAT atmospheric sounding campaign took place in Sodankylä, northern Finland (67.4º N, 26.6º E) to perform profile measurements of water vapor and aerosols in the troposphere and stratosphere by different in situ and remote sensing instruments. The campaign involved balloon borne research grade water vapor instruments such as the Cryogenic Frostpoint Hygrometer (CFH) and the Lyman-alpha fluorescence hygrometer FLASH-B. The climate research radiosonde Vaisala RR01, which is currently under development, was flown in the same payload with the cryogenic frost point hygrometer and the fluorescence hygrometer. The remote sensing instruments participating in the campaign included the microwave radiometer for water vapor measurements MIAWARA-C. This instrument was operated for a six month period, until mid-June 2010. The aerosol in situ profile measurements were made by the new COBALD instrument and by a well established balloon borne aerosol backscatter sonde. The particle measurements in the stratosphere were made simultaneously with the water vapor measurements. Here we provide an overview of the LAPBIAT campaign activities in Sodankylä, including the upper air and remote sensing instrument descriptions and first results of the measurements of water vapor and stratospheric aerosols in the Arctic vortex in early 2010. Campaign site Sodankylä site (67.4 °N, 26.6 °E, 179 m above mean sea level) is operated by the Finnish Meteorological Institute Arctic Research Centre. The site is representative of high latitude conditions in the northern Europe. During winter and spring the upper air soundings are frequently sampling air inside the stratospheric vortex. Several measurement programs are running on the long term basis, for example Sodankylä has one of the longest records of upper air measurements of temperature and ozone in the European sector of Arctic. The ... |
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