Data

Synthetic MSU temperatures were computed from CHAMP RO monthly temperature climatologies and from a few months of complementary RO climatologies from SAC-C, GRACE, and COSMIC, derived at the WegCenter/UniGraz, Austria, as well as from ECMWF analyses. We compared them with MSU temperature records provided by UAH, RSS, and HadAT2 as presented in the Report by the U.S. Climate Change Science Program (CCSP) (Karl et al. 2006) and shown in Fig. 1 to provide context. We focus on the years 2001-2006 and on the upper troposphere/lower stratosphere region (MSU TLS/T4 channel) where CHAMP RO retrievals have the best data quality.

Lower Stratosphere Global Anomalies

Lower Stratosphere Global Anomalies

Fig. 1 Global temperature anomalies smoothed with a 7-month moving average filter for the lower stratosphere (TLS) derived from UAH (light gray) and RSS (black) brightness temperatures and from HadAT2 radiosonde temperatures (dark gray) shown for the years 1979-2006. The time period 2001-2006 used in this study for comparison with CHAMP RO data is delimited by dashed vertical lines (Steiner et al. 2007)

Fig. 1 Global temperature anomalies smoothed with a 7-month moving average filter for the lower stratosphere (TLS) derived from UAH (light gray) and RSS (black) brightness temperatures and from HadAT2 radiosonde temperatures (dark gray) shown for the years 1979-2006. The time period 2001-2006 used in this study for comparison with CHAMP RO data is delimited by dashed vertical lines (Steiner et al. 2007)

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