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MIPAS2D: nighttime-daytime CFC11 E. Arnone, M. Carlotti, E. Papandrea, M. Ridolfi

MIPAS2D: nighttime-daytime CFC11 E. Arnone, M. Carlotti, E. Papandrea, M. Ridolfi DCFI, University of Bologna, Italy B.M. Dinelli ISAC-CNR, Bologna, Italy. EuroSprite2005. ESRIN-ESA Frascati, 4 December 2008. Night-daytime differences in CFC11. ACTION ITEM AI_L1_17.06

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MIPAS2D: nighttime-daytime CFC11 E. Arnone, M. Carlotti, E. Papandrea, M. Ridolfi

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  1. MIPAS2D: nighttime-daytime CFC11 E. Arnone, M. Carlotti, E. Papandrea, M. Ridolfi DCFI, University of Bologna, Italy B.M. Dinelli ISAC-CNR, Bologna, Italy EuroSprite2005 ESRIN-ESA Frascati, 4 December 2008

  2. Night-daytime differences in CFC11 ACTION ITEMAI_L1_17.06 check Day/Night CFC-11 for the GMTR data ISSUE: day-nighttime difference in CFC11 of the order of 10% in IMK data (Stiller QWG17) IMK Nighttime-daytime “daily” mean CFC11 within latitude band 60S/40S EuroSprite2005

  3. MIPAS2D: night-daytime differences in CFC11 EuroSprite2005 Nighttime-daytime “daily” mean CFC11 within latitude band 60S/40S a) Left: Oxford b) Right: IMK

  4. MIPAS2D: night-daytime differences in CFC11 EuroSprite2005 Nighttime-daytime “daily” mean CFC11 within latitude band 60S/40S a) Left: MIPAS2D (about 5000 orbits)‏ b) Right: IMK Note that roughly the same colourbar is applied to the two figures.

  5. MIPAS2D: night-daytime differences in CFC11 IMK night-daytime CFC11 Dec 2002 Jul 2003 Dec 2003 NP SP NP NP SP NP NP SP NP 280 150 Temperature (K)‏ Dec 2002 Jul 2003 Dec 2003

  6. MIPAS2D: night-daytime differences in CFC11 IMK night-daytime CFC11 Dec 2002 Jul 2003 Dec 2003 Temperature lat gradient (K/deg)‏ 2 -2 Dec 2002 Jul 2003 Dec 2003

  7. T: Dec 2002 Jul 2003 Dec 2002 Jul 2003 Dec 2003 EuroSprite2005 T_grad: Dec 2002 Jul 2003

  8. Conclusions IMK MIPAS2D The above analysis suggests that an inadequate modeling of the horizontal variability of temperature fields could explain the day-night differences observed in the IMK data as well as their reversal when changing season.

  9. HNO3 issue Oxford day-nighttime CFC11 (left) and HNO3 (right). The opposite VMR vertical gradient induces a reversal of the day-nighttime difference.

  10. MIPAS2D: FR and RR 36 km 36 km 52 km Temperature (K)‏ Ozone (ppmv)‏ North Pole Equator Temperature (K)‏ Ozone (ppmv)‏ EuroSprite2005 2002 2005 2008 2002 2005 2008 Time (years)‏ Time (years)‏ The DCFI-ISAC MIPAS2D database can be accessed via scp. For credentials, please send an e-mail to: mipas2d@safire.fci.unibo.it. Web: http://www.mbf.fci.unibo.it, http://www.isac.cnr.it/rss/mipas2d.htm

  11. MIPAS2D: night-daytime differences in F11 MIPAS2D nighttime-daytime “daily” mean F11 in latitude bands a) Left: 60S/40S (equivalent to Stiller's example)‏ b) Centre:40S/40N c) Right: 40N/60N Results are obtained performing a weighted average, a 3-sigma clipping filtering and are then smoothed over a 3-day running box. EuroSprite2005

  12. MIPAS2D: night-daytime differences in F11 MIPAS2D daytime F11 “daily” standard deviation in latitude bands a) Left: 60S/40S (Stiller's example band)‏ b) Centre:40S/40N c) Right: 40N/60N No significant difference with nighttime standard deviation (not shown). EuroSprite2005

  13. MIPAS2D: night-daytime differences in F11 MIPAS2D daytime F11 “daily” mean ESD in latitude bands a) Left: 60S/40S (Stiller's example band)‏ b) Centre:40S/40N c) Right: 40N/60N No significant difference with nighttime mean ESD (not shown). EuroSprite2005

  14. MIPAS2D: night-daytime differences in F11 MIPAS2D number of daytime F11 measurements in latitude bands a) Left: 60S/40S (Stiller's example band)‏ b) Centre:40S/40N c) Right: 40N/60N No significant difference with number of nighttime measurements (not shown). EuroSprite2005

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