August 23, 2000 l2l_adv.f This program inputs the biological advection terms from the layer model and outputs fields interpolated to 1m levels to be used for forcing a level model. There are 5 records per time step output: Record 1:Julian day, layer thicknesses h1,h2,h3,h4 Record 2:N advection terms for layers 1,2,3,4 Record 3:P advection terms for layers 1,2,3,4 Record 4:Z advection terms for layers 1,2,3,4 Record 5:N advection terms for layers 1,2,3,4 The input data file is bioadv_layer.asc (formatted, sequential). The output fields are the advection terms for N, P, Z, and D at each depth level(m/s). The output data file is bioadv_level.dat (binary, sequential). The number of depth levels set by the variable maxlev.