%0 Journal Article %T Penumbra: A spatially distributed, mechanistic model for simulating ground-level incident solar energy across heterogeneous landscapes %A Halama, Jonathan J. %A Kennedy, Robert E. %A Graham, James J. %A McKane, Robert B. %A Barnhart, Brad L. %A Djang, Kevin S. %A Pettus, Paul B. %A Brookes, Allen F. %A Wingo, Patrick C. %J PLoS ONE %V 13 %N 12 %D 2018-12-19 %I Public Library of Science %~ DeepDyve