UARS MLS PARAMETER: TEMP

UARS MONTH: 9206
UARS DAYS: 0307 - 0336 ( Jul. 14, 1992 - Aug. 12, 1992 )

• Inspection Date: 27-Jan-1997
  
  
• Quality Indicator for Month (QIM) [for v422 ] = A
  
  
• Further actions recommended: None.
  
  
• Comments: MLS was turned off for UARS days 307 through most of 310. NCEP data (both hemispheres) were missing for UARS day 311 (this has a minor impact on MLS retrievals). In addition, this UARS month has an unusually large number of V4 profiles (for ClO, HNO3, O3_205, and SO2) with spikes and poor retrieval quality (data quality indicator value of 2), although this number is rarely larger than 2% of any given day's profiles; this problem is related to a V4 retrieval software problem, but does not affect TEMP, H2O, or O3_183. These spikes occur on many days, towards the end of the day.
  
  A group of 4 sigma spikes occur near 34S in Australia and the south Pacific, but no indication that these were systematic.
  
  
• 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.
  
  

  Quality	MMAF STAT
  (TEMP Band)	B	S	P	M	T	t	G
  4	0	0	0	1	1317	0	32958
  3	0	0	0	0	0	0	0
  2	0	0	0	0	0	0	0
  1	0	0	0	0	0	0	0
  0	0	1	0	0	0	0	0

• Number of spikes
• 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: 34275
• Total records with MMAF_STAT = G/T/t and DQI = 4 with at least one spike greater than 5 sigma: 9 (fraction = 2.63e-04 )
• Total records with MMAF_STAT = G/T/t and DQI = 4 with at least one spike greater than 4 sigma: 137 (fraction = 4.00e-03 )




P (hPa)	4 to 5 sigma	5 to 10 sigma	> 10 sigma	total
0.464	34	3	0	37
1	38	2	0	40
2	33	2	0	35
5	12	0	0	12
10	3	0	0	3
22	3	0	0	3
46	10	2	0	12



• Records with spikes > 5 sigma




Day	Record	MMAF STAT	DQI	Lat	Lon	P (hPa)	TEMP (K)	UNCERT (K)	sigma factor
318	820	G	4	33S	140	0.464	214.9	7.2	5.1
318	914	G	4	33S	140	0.464	210.7	7.3	5.7
318	915	G	4	32S	144	0.464	211.3	7.3	5.7
319	641	G	4	24S	161	46	233.1	6.6	5.1
319	642	G	4	26S	164	46	234.0	6.8	5.2
319	922	G	4	26S	152	1	225.4	4.1	5.6
319	924	G	4	22S	159	2	228.7	2.6	5.1
319	925	G	4	20S	162	2	233.3	2.7	5.3
321	559	G	4	25S	176	1	228.8	4.1	5.2