MLS V4

UARS MLS PARAMETER: H2O

Inspection Date: 6-Feb-1997
Quality Indicator for Month (QIM) [for v422 ] = B
Further actions recommended: None.
Comments: There were some moon scan tests (for calibration) on UARS day 396 (about 280 records are not good for atmospheric viewing). Approximately 20 of the moon scan records on day 396 have not been flagged as bad, and indicate unreasonable water mixing ratios. The Quality Indicator for Month 9208 has been set to 'B' to bring these 20 scans to the user's attention.

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 H2O 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: 48468
Total records with MMAF_STAT = G/T/t and DQI = 4 with at least one spike greater than 5 sigma: 32 (fraction = 6.60e-04 )
Total records with MMAF_STAT = G/T/t and DQI = 4 with at least one spike greater than 4 sigma: 135 (fraction = 2.79e-03 )

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

0.215	13	1	0	14
0.464	16	4	0	20
1	6	2	0	8
2	5	0	0	5
5	31	6	0	37
10	22	2	5	29
22	9	5	7	21
46	7	10	0	17

Day	Record	MMAF STAT	DQI	Lat	Lon	P (hPa)	H2O (ppmv)	UNCERT (ppmv)	sigma factor

377	1245	G	4	28S	71	1	7.7	0.5	5.1
380	547	G	4	24S	243	22	5.6	0.7	5.0
386	813	G	4	18N	102	0.215	9.2	-1.5	5.6
388	597	G	4	4N	290	0.464	2.6	-1.1	5.4
388	640	G	4	24N	136	46	5.2	0.9	5.1
389	909	G	4	19N	60	46	4.7	0.7	5.1
396	571	G	4	31N	105	22,10	-0.3, 2.4	1.0, -1.6	9.5, 6.7
396	659	G	4	31N	80	22,10	-6.2, 0.4	-1.2, -1.9	21.5, 12.3
396	673	G	4	11S	111	22	2.8	-1.5	6.4
396	747	G	4	31N	56	22	1.0	1.0	6.8
396	836	G	4	28N	33	46,22,10	5.8, -7.9, -0.5	0.8, -1.2, -1.9	5.2, 24.8, 14.2
396	925	G	4	25N	10	22,10	-5.0, 1.1	-1.1, -1.9	25.7, 13.5
396	1015	G	4	18N	349	22	-0.0	0.9	10.7
396	1103	G	4	18N	325	22,10	-5.0, 1.2	-1.1, -1.9	22.9, 14.3
396	1191	G	4	19N	300	46,22,10	1.8, -1.7, 2.9	0.9, 1.0, -1.8	5.4, 14.9, 6.8
396	1280	G	4	15N	278	46,22,10	1.6, -3.6, 1.7	0.7, -1.2, -1.9	6.2, 19.6, 12.2
397	52	G	4	12N	261	46	4.2	-1.9	5.6
399	984	G	4	20N	138	46	4.9	-2.0	5.9
401	39	G	4	78N	97	5	5.3	0.8	5.5
402	199	G	4	18N	339	5	5.6	0.2	5.8
403	202	G	4	18N	333	5	5.5	0.2	5.4
404	544	G	4	21S	202	22	5.4	0.7	5.4
404	950	G	4	18N	334	5	5.8	0.2	6.7
404	1049	G	4	15S	331	46	4.3	0.7	5.1
405	952	G	4	18N	328	5	5.5	0.2	5.2
405	1051	G	4	15S	325	46	4.3	0.7	5.2
407	212	G	4	18N	310	5	5.5	0.2	5.0
408	1042	G	4	39N	277	1	2.9	-1.5	5.5
411	10	G	4	14S	223	46	4.4	0.8	5.5
411	1265	G	4	24S	322	0.464	3.3	1.0	5.6
412	740	G	4	23S	104	0.464	3.5	-1.1	5.3
412	1122	G	4	70N	74	0.464	3.3	0.4	5.1