Forest Change Data Catalogue
Drought
Climate Moisture Index (CMI) (Hogg, E.H., Price, D.T., McKenney, D.W.)
Climate Moisture Index (CMI) is an indicator of drought calculated as the difference between annual precipitation and potential evapotranspiration (the potential loss of water vapour from a landscape covered by vegetation). Positive CMI values indicate wet or moist conditions and show that precipitation is sufficient to sustain a closed-canopy forest. Negative CMI values indicate dry conditions that, at most, can support discontinuous parkland-type forests.
Data provided by: Ted Hogg, David Price, Dan McKenney
Reference: Wang, Y., Hogg, E.H., Price, D.T., Edwards, J. and Williamson, T., 2014. Past and projected future changes in moisture conditions in the Canadian boreal forest. The Forestry Chronicle, 90(5), pp.678-691.
| Years | Scenario | Description | Data Type | Link | |
|---|---|---|---|---|---|
| 1981-2010 | RCP Reference Period | The CMI calculated for the period from 1981-2010. This base line can be compared to the predicted CMI for various future climate scenarios. | raster | Download (0.4 MB) | |
| 2011-2100 | RCP 2.6 | The CMI projected for the periods 2011-2040, 2041-2070 and 2071-2100 under the RCP 2.6 scenario | raster | Download (1.2 MB) | |
| 2011-2100 | RCP 4.5 | The CMI projected for the periods 2011-2040, 2041-2070 and 2071-2100 under the RCP 4.5 scenario | raster | Download (1.2 MB) | |
| 2011-2100 | RCP 8.5 | The CMI projected for the periods 2011-2040, 2041-2070 and 2071-2100 under the RCP 8.5 scenario | raster | Download (1.3 MB) |