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 anomalies0.81
After quality control0.99
After breakpoint alignment1.18
Regional expectation during same months0.94 ± 0.27
National average during same months 0.92 ± 0.28
Global land average during same months 1.08 ± 0.03

Regional Consistency

Comparison of monthly mean station data to regional expectation

Typical Difference
(°C, 95% range)
Correlation
(R value)
Raw Monthly Anomalies ± 2.5 0.54
After Quality Control ± 1.7 0.73
After Breakpoint Adjustment ± 0.9 0.89

Quality Control Summary

Months missing 10 or more days 35
Serially repeated daily or monthly values 12
Extreme local outliers 7
Regional climatology outliers 53
Abrupt jumps 0
Marked as bad or manually changed by source 0
Exceeds global climatological range 0
Isolated observations 4
Frame shift repetitions 2
TMAX / TMIN inconsistency 0
TAVG outside TMAX / TMIN range 0
Total Observations Rejected by Quality Control 94

Station ID Codes

CA529
CA535
GHCNDSU000062840
GHCNM14862840000
GHCNM14862840001
GSOD628400-99999
HADCRU628400
ICAOHSSM
USAF628400
WMO62840
WMSSC628400
WWR62840

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.