CO: TES-MOPITT Comparisons

1
CO TES-MOPITT Comparisons monthly
means

• Ming Luo
• September 2006
• MOPITT Data Provided by the MOPITT Team

2

• Comparisons are made at two pressure levels for
  four typical months
• Lower troposphere 681 hPa (TES) and 700 hPa
  (MOPITT).
• Mid troposphere 511 hPa (TES) and 500 hPa
  (MOPITT).
• Oct 2005, Jan, Apr, and July 2006.
• Data screen
• TES typical QA flags including excluding scenes
  with large cloud OD/variability.
• MOPITT cloud free, day/night average with a
  priori fraction lt 50.
• Bin boxes
• TES 30Lat X 100 Lon, weighted inversely by
  distance.
• MOPITT 10Lat X 10 Lon.

3
CO Monthly Means at 681.3 hPa (TES) 700 hPa
(MOPITT) Oct 2005
TES
MOPITT day/night ave, aPriori Frac lt 50
TES a Priori
MOPITT day/night ave, all data
MOPITT a priori 94 ppb
4
CO Monthly Means at 681.3 hPa (TES) 700 hPa
(MOPITT) Jan 2006
MOPITT day/night ave, aPriori Frac lt 50
TES
TES a Priori
MOPITT day/night ave, all data
MOPITT a priori 94 ppb
5
CO Monthly Means at 681.3 hPa (TES) 700 hPa
(MOPITT) April 2006
MOPITT day/night ave, aPriori Frac lt 50
TES
TES a Priori
MOPITT day/night ave, all data
MOPITT a priori 94 ppb
6
CO Monthly Means at 681.3 hPa (TES) 700 hPa
(MOPITT) July 2006
MOPITT day/night ave, aPriori Frac lt 50
TES
TES a Priori
MOPITT day/night ave, all data
MOPITT a priori 94 ppb
7
CO Monthly Means at 510.9 hPa (TES) 500 hPa
(MOPITT) Oct 2005
TES
MOPITT day/night ave, aPriori Frac lt 50
TES a Priori
MOPITT day/night ave, all data
MOPITT a priori 86 ppb
8
CO Monthly Means at 510.9 hPa (TES) 500 hPa
(MOPITT) Jan 2006
TES
MOPITT day/night ave, aPriori Frac lt 50
MOPITT day/night ave, all data
TES a Priori
MOPITT a priori 86 ppb
9
CO Monthly Means at 510.9 hPa (TES) 500 hPa
(MOPITT) April 2006
MOPITT day/night ave, aPriori Frac lt 50
TES
TES a Priori
MOPITT day/night ave, all data
MOPITT a priori 86 ppb
10
CO Monthly Means at 510.9 hPa (TES) 500 hPa
(MOPITT) July 2006
MOPITT day/night ave, aPriori Frac lt 50
TES
TES a Priori
MOPITT day/night ave, all data
MOPITT a priori 86 ppb
11
Comparison of MOPITT day/night global maps at 700
hPa, April 2006
Day, aPriori Frac lt 50
Night, aPriori Frac lt 50
Night, all data
Day, all data
12
Conclusion

• Good agreement in global patterns, e.g., known
  biomass burning and heavy pollution sources for
  CO and the seasonal variability.
• Known artifacts to the maps
• Relative to MOPITT, TES is under sampled with
  much larger bin box, leading to much smoothed CO
  maps, e.g., smaller maximum CO values.
• The influence of a priori information in both TES
  and MOPITT retrieved CO data Largest in lower
  and upper troposphere, e.g., TES CO patterns in
  Oct, Jan Apr MOPITT day/night differences.