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| Comparison of total ozone derived from OMI and SCIAMACHY over Asia region |
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Abstract Using the total ozone products derived from ozone monitoring instrument (OMI) and scanning imaging absorption spectrometer for atmospheric chartography (SCIAMACHY), and validated by the ground based measured total ozone data from WODUC. The temporal and spatial characteristics of total ozone over Asia region was analyzed based on the remotely sensed datasets. The validation result indicates that there are higher accurate of the OMI retrieved total ozone data than SCIAMACHY’s, and OMI data has higher resolution both temporal and spatial-scales. The seasonal variation of total ozone presents obvious pattern, the largest value appear in April and May, and the smallest value often appear in November and December over lower latitude areas, respectively. But for the higher latitude areas; the largest and smallest appear in February or March and August or September respectively. The total ozone present latitudinal relied on distribution pattern and increasing with latitude raised. From 10oN ~30oN, the increasing rate is less, while from 30 oN ~50oN, the increasing rate is boosty. There is a lower value area over Tibetan Plateau and extend to the lower latitude areas along Hengduan Mountains of China. The variation of total ozone distribution pattern also alterative along with different latitudes, the trend is that with the mean total ozone value increase with latitude raised. The variation of total ozone in 216 lower latitude stations are smaller, with alternation for mean value is 30 DU. There are big variation of total ozone value in 326 higher latitude stations, with alternation for mean value is up to 180 DU.
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Received: 09 September 2010
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