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(Jean Christopher Lambert, BIRA) - 2.6Mb pdf - QA4EO

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[GOME - SAOZ]/SAOZ Total Ozone (%)<br />

Evolution of GOME total ozone data accuracy since 1995…<br />

40<br />

SZA dependence is a QI.<br />

30<br />

20<br />

10<br />

0<br />

-10<br />

-20<br />

-30<br />

(GOME-SAOZ)/SAOZ [%]<br />

Tropic of Capricorn<br />

Northern Mid-latitudes<br />

60° North<br />

Arctic Polar Circle<br />

Northern Polar Latitudes<br />

1995<br />

GDP 1.20<br />

20 30 40 50 60 70 80 90 100<br />

20<br />

15<br />

10<br />

5<br />

0<br />

-5<br />

-10<br />

Solar zenith angle of GOME (deg)<br />

GDP 2.0<br />

1996<br />

GDP 2.7 / 3.0 / 4.0<br />

1999 / 2003 / 2006<br />

GDP 4.1 / 5.0<br />

2008 / 2011<br />

-15<br />

-20<br />

All latitudes excepted Antarctica<br />

Vertical error bars: standard deviation (2σ)<br />

20 30 40 50 60 70 80 90 100<br />

Solar zenith angle of GOME [deg.]<br />

13 <strong>QA4EO</strong> Workshop, RAL, Harwell Oxford, UK, Oct. 18-20, 2011

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