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 anomalies3.51
After quality control1.39
After breakpoint alignment0.60
Regional expectation during same months2.45 ± 0.76
National average during same months 2.69 ± 0.33
Global land average during same months 2.73 ± 0.20

Regional Consistency

Comparison of monthly mean station data to regional expectation

Typical Difference
(°C, 95% range)
Correlation
(R value)
Raw Monthly Anomalies ± 4.2 0.65
After Quality Control ± 3.3 0.71
After Breakpoint Adjustment ± 3.4 0.69

Quality Control Summary

Months missing 10 or more days 25
Serially repeated daily or monthly values 22
Extreme local outliers 4
Regional climatology outliers 5
Abrupt jumps 0
Marked as bad or manually changed by source 0
Exceeds global climatological range 0
Isolated observations 4
Frame shift repetitions 0
TMAX / TMIN inconsistency 0
TAVG outside TMAX / TMIN range 0
Total Observations Rejected by Quality Control 39

Station ID Codes

FAAWNL
GSOD714620-04812
GSOD714620-99999
ICAOCWNL
NCDC20028714
USAF714620
WBAN4812
WMO71462

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.