Comparison of GOME-2/MetOp total ozone data with Brewer spectroradiometer data over the Iberian Peninsula

被引：35

作者：

Anton, M. ^{[1
]}

Loyola, D. ^{[2
]}

Lopez, M. ^{[3
]}

Vilaplana, J. M. ^{[4
]}

Banon, M. ^{[3
]}

Zimmer, W. ^{[2
]}

Serrano, A. ^{[1
]}

机构：

[1] Univ Extremadura, Dept Fis, E-06071 Badajoz, Spain

[2] DLR, German Aerosp Ctr, IMF, Remote Sensing Technol Inst, Wessling, Germany

[3] AEMet, Madrid, Spain

[4] INTA, Estn Sondeos Atmosfer El Arenosillo, Huelva, Spain

来源：

ANNALES GEOPHYSICAE | 2009年 / 27卷 / 04期

关键词：

Atmospheric composition and structure; Middle atmosphere; composition and chemistry; Instruments and techniques; GOME TOTAL OZONE; DOBSON;

D O I：

10.5194/angeo-27-1377-2009

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The main objective of this article is to compare the total ozone data from the new Global Ozone Monitoring Experiment instrument (GOME-2/MetOp) with reliable ground-based measurement recorded by five Brewer spectroradiometers in the Iberian Peninsula. In addition, a similar comparison for the predecessor instrument GOME/ERS2 is described. The period of study is a whole year from May 2007 to April 2008. The results show that GOME2/MetOp ozone data already has a very good quality, total ozone columns are on average 3.05% lower than Brewer measurements. This underestimation is higher than that obtained for GOME/ERS-2 (1.46%). However, the relative differences between GOME-2/MetOp and Brewer measurements show significantly lower variability than the differences between GOME/ERS-2 and Brewer data. Dependencies of these relative differences with respect to the satellite solar zenith angle (SZA), the satellite scan angle, the satellite cloud cover fraction (CF), and the ground-based total ozone measurements are analyzed. For both GOME instruments, differences show no significant dependence on SZA. However, GOME-2/MetOp data show a significant dependence on the satellite scan angle (+1.5%). In addition, GOME/ERS-2 differences present a clear dependence with respect to the CF and ground-based total ozone; such differences are minimized for GOME-2/MetOp. The comparison between the daily total ozone values provided by both GOME instruments shows that GOME-2/MetOp ozone data are on average 1.46% lower than GOME/ERS-2 data without any seasonal dependence. Finally, deviations of a priori climatological ozone profile used by the satellite retrieval algorithm from the true ozone profile are analyzed. Although excellent agreement between a priori climatological and measured partial ozone values is found for the middle and high stratosphere, relative differences greater than 15% are common for the troposphere and lower stratosphere.

引用

页码：1377 / 1386

页数：10

共 31 条

[1] Comparison of GOME total ozone data with ground data from the Spanish Brewer spectroradiometers [J].