Footprint

Footprint

Footprint
FLEXCPP is a Lagrangian particle dispersion program written in C++ based on FLEXPART Version 6.4. The intention is to implement parallel computing to accelerate modelling. In our experiment with multi-cores computers, the performance gain was proportional to the number of cores. In a computer with a NVIDIA GPU, the performance improvement was more than 20 times. The program have been used to compute the footprint (mean residence time of Lagrangian particles near the surface) for Hateruma and Ochi-ishi stations.
  • [Software] FLEXCPP
  • [Reference] Zeng, J., H. Nakajima, T. Matsunaga, H. Mukai, K. Hiraki, and Y. Yokota, 2013. Linking carbon dioxide variability at Hateruma Station to East Asia emissions by Bayesian Inversion. Lagrangian Modeling of the Atmosphere. Geophysical Monograph 200. Eds. J. Lin, D. Brunner, C. Gerbig, A. Stohl, A. Luhar, and P. Webley., p.163-172. doi:10.1029/2012GM001245.
  • [Calculation Period] 2006/01/01 - Present
  • [Location of Calculation] Hateruma (Latitude : 24.0608N, Longitude : 123.8093E), Cape Ochiishi (Latitude : 43.1602N, Longitude : 145.4973E)
  • [Parameters of Calculation] Mean residence time of Lagrangian particles in 1x1 grid cells