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Stratospheric Temperature Time Series 1/79 to 12/05 J. Nash, R. Lin and A.J. Miller.

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Presentation on theme: "Stratospheric Temperature Time Series 1/79 to 12/05 J. Nash, R. Lin and A.J. Miller."— Presentation transcript:

1 Stratospheric Temperature Time Series 1/79 to 12/05 J. Nash, R. Lin and A.J. Miller

2 Tiros, NOAA- 6, 7, 8, 9, 11, 14 - SSU NOAA-15, 16, 17, 18 - AMSU AQUA - AMSU

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4 Data Availability  Nash SSU data 1/79-5/98 standardized to NOAA-6  NOAA N-14 data 6/98 – 12/05; overlap Nash 7/95-5/98 to remove bias; not adjusted for semi-diurnal tides  NOAA N-11 data 7/97 – 12/03; overlap Nash 7/97-5/98 to remove bias; not adjusted for semi-diurnal tides In addition, overlap N-11 with N-14 2001 to remove bias; not adjusted for semi-diurnal tides  AMSU-15 data 7/98 – present * Channel 14 lost 11/00 * Channel 11 lost 5/02 * Data stable to within 0.02C, 1998-2005 * Use 4 channels for entire period * Regressed against N-14 7/98-6/00 to simulate SSU  AQUA data 1/03 – present * Regressed against N-14 1/03-12/03 to simulate SSU * Use 6 channels

5 John Nash (UKMO) SSU Channels Channel Peak of Weighting Function 47X 0.5 hPa 27 1.5 36X 2.0 266.0 25 15.0 26X 20.0 15X 50.0

6 NOAA N-14 minus NASH N-14

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8 NOAA N-11 minus NASH N-14

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11 AMSU => SSU via Statistical Regression 14 SSU 25, etc = a 0 + 3 a i x AMSU i i=9

12 AMSU N-15 SD of Simulation of N-14 SSU 7/98- 6/00

13 AQUA AMSU SD of Simulation of N-14 SSU 1/03- 12/03

14 Integrated Temperature 70N-70S

15 Data Availability The URL for the SSU dataset will be ftp://ftp.cpc.ncep.noaa.gov/wd53rl/ssu/cohesive/


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