Temperature Monitoring Station:
ALERT,N.W.T.

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		17.68
After quality control		1.37
After breakpoint alignment		1.37
Regional expectation during same months		1.67 ± 0.60
National average during same months		2.40 ± 0.17
Global land average during same months		1.69 ± 0.09

Regional Consistency

Comparison of monthly mean station data to regional expectation

	Typical Difference (°C, 95% range)	Correlation (R value)
Raw Monthly Anomalies	± 11.5	0.50
After Quality Control	± 4.4	0.68
After Breakpoint Adjustment	± 4.4	0.68

Quality Control Summary

Months missing 10 or more days	1
Serially repeated daily or monthly values	1
Extreme local outliers	0
Regional climatology outliers	82
Abrupt jumps	0
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	83

Station ID Codes

FAA	YLT
GHCND	CA002400300
GHCND	CA002400306
GHCNM	40371082000
GSOD	710820-99999
GSOD	710823-99999
GSOD	740820-99999
HADCRU	710820
ICAO	CWLT
ICAO	CYLT
NCDC	20028515
USAF	710820
USAF	710823
USAF	740820
WBAN	18601
WMO	71082
WMSSC	710820
WWR	71082

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.