Temperature Monitoring Station:
BIRMINGHAM MUNICIPAL ARPT

Monthly Mean Temperature Data

Raw Data relative to Expected Monthly Means

Difference from Regional Expectation

Breakpoint Adjusted Annual Average Comparison

Mean Rate of Change ( °C / Century )

Raw monthly anomalies		-0.14
After quality control		-0.16
After breakpoint alignment		0.49
Regional expectation during same months		0.55 ± 0.15
National average during same months		0.86 ± 0.11
Global land average during same months		1.18 ± 0.06

Regional Consistency

Comparison of monthly mean station data to regional expectation

	Typical Difference (°C, 95% range)	Correlation (R value)
Raw Monthly Anomalies	± 1.1	0.95
After Quality Control	± 1.1	0.95
After Breakpoint Adjustment	± 0.8	0.97

Quality Control Summary

Months missing 10 or more days	1
Serially repeated daily or monthly values	2
Extreme local outliers	0
Regional climatology outliers	0
Abrupt jumps	1
Marked as bad or manually changed by source	0
Exceeds global climatological range	0
Isolated observations	0
Frame shift repetitions	0
TMAX / TMIN inconsistency	0
TAVG outside TMAX / TMIN range	0
Total Observations Rejected by Quality Control	3

Station ID Codes

COOP	10831
FAA	BHM
GHCND	USW00013876
GHCNM	42572228000
GSOD	722280-13876
GSOD	999999-13876
HADCRU	722280
ICAO	KBHM
NCDC	20000236
NWS	BHM
USAF	722280
WBAN	13876
WMO	72228
WMSSC	722280
WWR	72228

ID codes may be repeated if the identification of the station changed during its history or if two different records were found to contain the same data, in which case the records would be merged.