We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Intercomparison of total column ozone data from the Pandora spectrophotometer with Dobson, Brewer, and OMI measurements over Seoul, Korea.
- Authors
Jiyoung Kim; Jhoon Kim; Hi-Ku Cho; Jay Herman; Sang Seo Park; Hyun Kwang Lim; Jae-Hwan Kim; Koji Miyagawa; Yun Gon Lee
- Abstract
Daily total column ozone (TCO) measured using the Pandora spectrophotometer (no. 19) was compared with data from the Dobson (no. 124) and Brewer (no. 148) spectrophotometers, as well as from the Ozone Monitoring Instrument (OMI) (with two different algorithms, Total Ozone Mapping Spectrometer (TOMS) TOMS and differential optical absorption spectroscopy (DOAS) methods), over the 2-year period between March 2012 and March 2014 at Yonsei University, Seoul, Korea. Based on the linear-regression method, the TCO from Pandora is closely correlated with those from other instruments with regression coefficients (slopes) of 0.95 (Dobson), 1.00 (Brewer), 0.98 (OMI-TOMS), and 0.97 (OMI-DOAS), and determination coefficients (R2) of 0.95 (Dobson), 0.97 (Brewer), 0.96 (OMI-TOMS), and 0.95 (OMI-DOAS). The daily averaged TCO from Pandora has within 3% differences compared to TCO values from other instruments. For the Dobson measurements in particular, the difference caused by the inconsistency in observation times when compared with the Pandora measurements was up to 12.5%because of diurnal variations in the TCO values. However, the comparison with Brewer after matching the observation time shows agreement with large R2 and small biases. The TCO ratio between Brewer and Pandora shows the 0.98±0.03, and the distributions for relative differences between two instruments are 89.2 and 57.1% of the total data within the error ranges of 3 and 5 %, respectively. The TCO ratio between Brewer and Pandora also is partially dependent on solar zenith angle. The error dependence by the observation geometry is essential to the further analysis focusing on the sensitivity of aerosol and the stray-light effect in the instruments.
- Subjects
SEOUL (Korea); OZONE spectra; SPECTROPHOTOMETERS; TOTAL ozone mapping spectrometers; DIURNAL variations in meteorology; ATMOSPHERIC aerosols; ZENITH distance
- Publication
Atmospheric Measurement Techniques, 2017, Vol 10, Issue 10, p3661
- ISSN
1867-1381
- Publication type
Article
- DOI
10.5194/amt-10-3661-2017