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-0.50
After quality control-0.82
After breakpoint alignment1.04
Regional expectation during same months1.09 ± 0.20
National average during same months 1.02 ± 0.12
Global land average during same months 1.18 ± 0.03

Regional Consistency

Comparison of monthly mean station data to regional expectation

Typical Difference
(°C, 95% range)
Correlation
(R value)
Raw Monthly Anomalies ± 1.9 0.14
After Quality Control ± 1.6 0.09
After Breakpoint Adjustment ± 0.6 0.82

Quality Control Summary

Months missing 10 or more days 45
Serially repeated daily or monthly values 5
Extreme local outliers 20
Regional climatology outliers 28
Abrupt jumps 2
Marked as bad or manually changed by source 0
Exceeds global climatological range 0
Isolated observations 2
Frame shift repetitions 2
TMAX / TMIN inconsistency 0
TAVG outside TMAX / TMIN range 0
Total Observations Rejected by Quality Control 75

Station ID Codes

CA151
GHCNM50396581000
GSOD965810-99999
GSOD965830-99999
HADCRU965810
ICAOWIOO
USAF965810
USAF965830
WMO96581
WMSSC965810
WMSSC965830

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.