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 | |
|---|---|---|---|---|---|
| 1981-2100 | RCP 2.6; RCP 8.5 | A comparison of the projected CMI between the reference period and different climate change scenarios and time periods. | Download (2.2 MB) | ||
| 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. | Download (1.2 MB) | ||
| 2011-2040 | RCP 2.6 | The projected CMI for the period of 2011 to 2040 under RCP 2.6, which assumes greenhouse gas emissions will be rapidly reduced. | Download (1.5 MB) | ||
| 2041-2070 | RCP 2.6 | The projected CMI for the period of 2041 to 2070 under RCP 2.6, which assumes greenhouse gas emissions will be rapidly reduced. | Download (1.5 MB) | ||
| 2071-2100 | RCP 2.6 | The projected CMI for the period of 2071 to 2100 under RCP 2.6, which assumes greenhouse gas emissions will be rapidly reduced. | Download (1.2 MB) | ||
| 2011-2040 | RCP 4.5 | The projected CMI for the period of 2011 to 2040 under RCP 4.5, which assumes moderate reductions in greenhouse gas emissions. | Download (1.2 MB) | ||
| 2041-2070 | RCP 4.5 | The projected CMI for the period of 2041 to 2070 under RCP 4.5, which assumes moderate reductions in greenhouse gas emissions. | Download (1.2 MB) | ||
| 2071-2100 | RCP 4.5 | The projected CMI for the period of 2071 to 2100 under RCP 4.5, which assumes moderate reductions in greenhouse gas emissions. | Download (1.2 MB) | ||
| 2011-2040 | RCP 8.5 | The projected CMI for the period of 2011 to 2040 under RCP 8.5, which assumes continued increases in greenhouse gas emissions. | Download (1.2 MB) | ||
| 2041-2070 | RCP 8.5 | The projected CMI for the period of 2041 to 2070 under RCP 8.5, which assumes continued increases in greenhouse gas emissions. | Download (1.2 MB) | ||
| 2071-2100 | RCP 8.5 | The projected CMI for the period of 2071 to 2100 under RCP 8.5, which assumes continued increases in greenhouse gas emissions. | Download (1.2 MB) |