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Published byAllison Whitehead Modified over 10 years ago
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Reconciling trends from radiosondes and satellites (MSU4 and SSU15x) Data: LKS radiosondes (87 stations), updated to 2004 using IGRA data MSU4 and SSU15x data (1979-2004)
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vertical integrals of radiosonde data
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Problem: radiosondeds give substantially larger cooling than satellites Seidel et al., 2004
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radiosonde vs. satellite trends trends of differences (evaluated at each station)
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Trend differences are associated with jumps jump
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Jumps occur at different times at different stations, suggesting problems originate with sondes (not satellites)
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Simple solution: just omit stations with large biases (identified by MSU4 comparisons) trend biases < 0.3 K/decade this retains ~ 40 stations
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Sondes vs. MSU4 for limited LKS stations
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Time series: satellite vs. ensemble radiosondes
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satellite vs. ensemble radiosondes: global means
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Radiosonde trends
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Seasonality of radiosonde trends spring-summer cooling in both polar regions
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seasonal variation of MSU4 trends
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Seasonality of radiosonde trends small seasonality at all latitudes
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vertical profile of trends
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Seasonal variation of polar trends
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Solar cycle
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vertical profile of solar signal in tropics from radiosondes
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comparisons with SSU15x note SSU data are not co-located with sonde station (10 degree zonal means)
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SSU15x trends vs. sondes
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SSU15x time series vs. sondes note trends in differences (SSU15x cooling too much)
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SSU15x time series vs. sondes
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global mean
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