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 anomalies1.21
After quality control1.06
After breakpoint alignment0.38
Regional expectation during same months0.47 ± 0.09
National average during same months 0.73 ± 0.08
Global land average during same months 1.07 ± 0.02

Regional Consistency

Comparison of monthly mean station data to regional expectation

Typical Difference
(°C, 95% range)
Correlation
(R value)
Raw Monthly Anomalies ± 2.1 0.84
After Quality Control ± 1.9 0.83
After Breakpoint Adjustment ± 1.7 0.85

Quality Control Summary

Months missing 10 or more days 16
Serially repeated daily or monthly values 13
Extreme local outliers 2
Regional climatology outliers 289
Abrupt jumps 0
Marked as bad or manually changed by source 0
Exceeds global climatological range 0
Isolated observations 5
Frame shift repetitions 0
TMAX / TMIN inconsistency 0
TAVG outside TMAX / TMIN range 0
Total Observations Rejected by Quality Control 309

Station ID Codes

COOP420519
COOP425477
GHCNDUSC00420519
GHCNDUSC00425477
GHCNM42500425477
GHCNM42572471004
HADCRU724707
NCDC20026168
NCDC20026183
NWSBVRU1
NWSMRYU1

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.