MODELING COOL-SEASON SOIL-WATER EROSION ON A FINE SANDY LOAM SOIL IN PRINCE-EDWARD-ISLAND

Selected concepts from the ANSWERS model were used to facilitate a lin kage between laboratory and field data from cool season soil erosion r esearch in Prince Edward Island (PEI). ANSWERS was split into three se quential programs and was substantially revised to facilitate extended periods of winter modelling and to accommodate crop-by-field input, e lement sequencing, and perennial streamflow. Based on laboratory and f ield rainfall simulator data, the sediment algorithm was revised. Due to the substantial modifications and a change in emphasis, the new mod el has been designated COSSEM (COol Season Soil Erosion Model). Sample simulations using COSSEM are presented for laboratory and field rainf all simulator runs and for spring runoff from a combined rainfall and snowmelt event on a USLE erosion plot and an adjacent monitored 140 ha catchment which is commercially farmed. The simulations showed that C OSSEM can link laboratory and field data.