Mean Summer Vulnerability Mean monthly radiation Predicted mean Summer (Dec-Mar) Continuous variable Fine scale data (1 degree) on net solar radiation surfaces for Australia at 1 net radiation from 1980 to 2006. binned to 3 states: topography and past solar (1980 to 2006) arc-second resolution by Predictions based on solar 1= 0-10 MJ.m-2.d-1 exposure can be used to Jenet Austin, John Gallant, geometry, elevation, slope, aspect, 2= 10-15 MJ.m-2.d-1 identify which alpine bogs Tom Van Niel, CSIRO Land albedo, cloud cover, air 3= 15-20 MJ.m-2.d-1 may be most susceptible to and Water Date: 19.03.2014 temperature, vapour pressure and increased solar radiation in vegetation cover. the future. Projected change Threat Climate Futures - Change in maximum precipitation Continuous variable Declines in rainfall may impact in daily rainfall Landscapes and Policy Hub rate in a time-step (mm/day). binned to 5 states: bog vegetation and (2100) Calculated by subtracting the 1= -22 to -20 mm hydrology. average value for 1960-1989 from 2= -20 to -19 mm the average value from 2070-2099. 3= -19 to -18.5 mm 4= -18.5 to -17 mm 5= -17 to -15.5 mm Projected change Threat Climate Futures - Change in maximum temperature Continuous variable Higher temperatures will in max Temp Landscapes and Policy Hub (K). Calculated by subtracting the binned to 5 states influence plant growth and (2100) average value for 1961-1990 from (positive values may be too high for some bog – the average value from 2070-2099. increasing temperature): taxa. Higher temperatures (in 1= 3-3.5 Kelvin/ oC association with winds) also 2= 3.5-3.8 Kelvin/ oC result in higher rates of 3= 3.9-4.3 Kelvin/ oC evaporation and 4= 4.3-4.7 Kelvin/ oC evapotranspiration of water 5= 4.7-5.1 Kelvin/ oC from alpine bogs. Evapotranspiration in the hottest month is the current limiting factor for Sphagnum peatlands ().
Mean Summer net solar radiation (1980 to 2006) Vulnerability Mean monthly radiation surfaces for Australia at 1 arc-second resolution by Jenet Austin, John Gallant, Tom Van Niel, CSIRO Land and Water Date: 19.03.2014 Predicted mean Summer (Dec-Mar) net radiation from 1980 to 2006. Predictions based on solar geometry, elevation, slope, aspect, albedo, cloud cover, air temperature, vapour pressure and vegetation cover. Continuous variable binned to 3 states: 1= 0-10 MJ.m-2.d-1 2= 10-15 MJ.m-2.d-1 3= 15-20 MJ.m-2.d-1 Fine scale data (1 degree) on topography and past solar exposure can be used to identify which alpine bogs may be most susceptible to increased solar radiation in the future. Projected change in daily rainfall (2100) Threat Climate Futures - Landscapes and Policy Hub Change in maximum precipitation rate in a time-step (mm/day). Calculated by subtracting the average value for 1960-1989 from the average value from 2070-2099. Continuous variable binned to 5 states: 1= -22 to -20 mm 2= -20 to -19 mm 3= -19 to -18.5 mm 4= -18.5 to -17 mm 5= -17 to -15.5 mm Declines in rainfall may impact bog vegetation and hydrology. Projected change in max Temp (2100) Threat Climate Futures - Landscapes and Policy Hub Change in maximum temperature (K). Calculated by subtracting the average value for 1961-1990 from the average value from 2070-2099. Continuous variable binned to 5 states (positive values – increasing temperature): 1= 3-3.5 Kelvin/ oC 2= 3.5-3.8 Kelvin/ oC 3= 3.9-4.3 Kelvin/ oC 4= 4.3-4.7 Kelvin/ oC 5= 4.7-5.1 Kelvin/ oC Higher temperatures will influence plant growth and may be too high for some bog taxa. Higher temperatures (in association with winds) also result in higher rates of evaporation and evapotranspiration of water from alpine bogs. Evapotranspiration in the hottest month is the current limiting factor for Sphagnum peatlands ().
nerp-aligning-protocols-for-assessing-the-status-of-alpine-sphagnum-bogs-and-associated-fens-of-the-australian-alps.docx