MLS V4

UARS MLS PARAMETER: TEMP

Inspection Date: 30-Apr-1997
Quality Indicator for Month (QIM) [for v422 ] = A
Further actions recommended: None.
Comments: There was some moon interference (for space view calibration) on several records of UARS days 195 through 197 (and these records are flagged as bad). NCEP data (northern hemisphere) were missing for UARS day 208 (this has a minor impact on MLS retrievals). A UARS roll maneuver on UARS day 210 affected a significant part of that day's atmospheric data (flagged as non-good data).

A group of 4 sigma spikes are seen at 34N near the east China but seem normal.

Number of records in each DQI and MMAF_STAT category

MMAF_STAT: G, good data; t, missing NCEP temperatures below 22 hPa; T, missing NCEP temperatures below 100 hPa; M, missing tangent points; P, pointing anomaly; S, scan anomaly; B, bad data.
DQI (Data Quality Indicator): 4, good radiance fit/good radiances; 3, good radiance fit/some bad radiances; 2, bad radiance fit/good radiances; 1, bad radiance fit/some bad radiances; 0, anomaly/no fit.

These are spikes in the retrieved TEMP mixing ratios for records with MMAF_STAT = G/T/t and DQI = 4/2 (that is, good records with good radiances). Spikes are identified by comparison of their deviation from the monthly zonal mean with the rms variability (sigma) calculated in distinct 6 degree latitude bins.
Total records this month with MMAF_STAT = G/T/t and DQI = 4: 49029
Total records with MMAF_STAT = G/T/t and DQI = 4 with at least one spike greater than 5 sigma: 3 (fraction = 6.12e-05 )
Total records with MMAF_STAT = G/T/t and DQI = 4 with at least one spike greater than 4 sigma: 91 (fraction = 1.86e-03 )

P (hPa)	4 to 5 sigma	5 to 10 sigma	> 10 sigma	total

0.464	2	0	0	2
1	37	1	0	38
2	10	0	0	10
5	6	0	0	6
10	17	0	0	17
22	4	0	0	4
46	12	2	0	14

Day	Record	MMAF STAT	DQI	Lat	Lon	P (hPa)	TEMP (K)	UNCERT (K)	sigma factor

197	1237	G	4	33N	117	1	248.4	4.1	5.3
225	371	G	4	29S	281	46	226.2	6.9	5.0
226	373	G	4	28S	275	46	226.9	6.8	5.4