Table 6 Trend in annual total precipitation, daily maximum and minimum temperature, daily temperature range, daily solar radiation, total evapotranspiration and March snow water equivalent over Thompson sub-basins from 1959 to 2004 (change per 46 years).
Variable (units) | Data Set | Trend by Basin | ||||
|---|---|---|---|---|---|---|
CLEAS | NTHMB | NTHMM | STHOM | THOMS | ||
Precipitation (mm) | PBCmet | 196 | 283 | 192 | 2 | 54 |
NRCANmet | 38 | 49 | 69 | 162 | 108 | |
PNWNAmet | 25 | 34 | 27 | 73 | 46 | |
Maximum Temperature (°C) | PBCmet | 1.0 | 1.1 | 1.1 | 0.9 | 1.0 |
NRCANmet | 0.9 | 0.7 | 0.8 | 0.3 | 0.7 | |
PNWNAmet | 0.3 | 0.2 | 0.2 | 0.6 | 0.5 | |
Minimum Temperature (°C) | PBCmet | 1.2 | 1.0 | 1.2 | 1.4 | 1.5 |
NRCANmet | 1.2 | 1.8 | 1.4 | 1.7 | 1.6 | |
PNWNAmet | 1.2 | 1.0 | 1.2 | 1.4 | 1.5 | |
Daily Temperature Range (°C) | PBCmet | −0.2 | 0.1 | −0.1 | −0.4 | −0.4 |
NRCANmet | 0.0 | −0.7 | −0.4 | −1.1 | −0.7 | |
PNWNAmet | −0.9 | −0.8 | −0.9 | −0.7 | −0.8 | |
Solar Radiation (W m−2) | PBCmet | −13 | −11 | −12 | −13 | −12 |
NRCANmet | −10 | −7 | −10 | −12 | −12 | |
PNWNAmet | −11 | −12 | −11 | −14 | −11 | |
Evapotranspiration (mm) | PBCmet | 24 | 21 | 28 | 28 | 34 |
NRCANmet | 45 | 28 | 43 | 35 | 57 | |
PNWNAmet | 17 | 10 | 15 | 22 | 21 | |
March Snow Water Equivalent (mm) | PBCmet | 68 | 148 | 67 | −68 | −26 |
NRCANmet | −22 | 15 | −1 | 44 | −10 | |
PNWNAmet | −14 | 0 | −11 | −20 | −22 | |
