Temperature Monitoring Station:
ANCHORAGE MERRILL FIELD

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		1.98
After quality control		1.94
After breakpoint alignment		1.18
Regional expectation during same months		1.15 ± 0.18
National average during same months		0.90 ± 0.07
Global land average during same months		1.14 ± 0.03

Regional Consistency

Comparison of monthly mean station data to regional expectation

	Typical Difference (°C, 95% range)	Correlation (R value)
Raw Monthly Anomalies	± 2.8	0.86
After Quality Control	± 2.8	0.86
After Breakpoint Adjustment	± 2.8	0.86

Quality Control Summary

Months missing 10 or more days	1
Serially repeated daily or monthly values	2
Extreme local outliers	1
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	4

Station ID Codes

COOP	500280
COOP	500285
FAA	ACG
FAA	ANC
FAA	MRI
GHCND	USW00026409
GHCND	USW00026451
GHCNM	42570273000
GSOD	702735-26409
GSOD	702735-99999
GSOD	999999-26451
HADCRU	702730
ICAO	PAMR
ICAO	PANC
NCDC	20022040
NCDC	20022052
NWS	ACG
NWS	ANC
USAF	702735
WBAN	26409
WBAN	26451
WMO	70273
WMSSC	702730
WWR	70273

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.