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 anomalies1.68
After quality control1.47
After breakpoint alignment2.33
Regional expectation during same months2.34 ± 0.16
National average during same months 2.20 ± 0.10
Global land average during same months 1.59 ± 0.06

Regional Consistency

Comparison of monthly mean station data to regional expectation

Typical Difference
(°C, 95% range)
Correlation
(R value)
Raw Monthly Anomalies ± 1.8 0.95
After Quality Control ± 1.7 0.94
After Breakpoint Adjustment ± 1.7 0.94

Quality Control Summary

Months missing 10 or more days 2
Serially repeated daily or monthly values 2
Extreme local outliers 4
Regional climatology outliers 34
Abrupt jumps 2
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 36

Station ID Codes

FAAYDL
GHCNDCA001192340
GHCNDCA001192345
GHCNDCA00119BLM0
GHCNM40371958000
GSOD712220-25305
GSOD716860-99999
GSOD719580-99999
GSOD719584-99999
GSOD729580-99999
HADCRU719580
ICAOCWDL
ICAOCYDL
ICAOYDL
NCDC20028214
USAF712220
USAF716860
USAF719580
USAF719584
USAF729580
WBAN25305
WMO71686
WMO71958
WMO72958

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.