# Data from the maize field campaign in Illinois 

# Download it from: http://people.atmos.ucla.edu/mchamecki/media/data/long_time_series_2011_july_07.txt.gz
# This is an ASCII file compressed with gzip (about 33MB for compressed file)

# The main reference for the experiment is
	S.C. Gleicher, M. Chamecki, S.A. Isard, Y. Pan and G.G. Katul
        Interpreting three-dimensional spore concentration measurements and escape fraction in a crop canopy using a coupled Eulerian-Lagrangian stochastic model
        Agricultural and Forest Meteorology, 194:118-131

# The main reference for data analysis for this period is
	M. Chamecki
        Persistence of velocity fluctuations in non-Gaussian turbulence within and above plant canopies
        Physics of Fluids, 2013, 25:1-14
        
# There is some additional information (mostly the numerical modeling of the experiment) in
	Y. Pan, M. Chamecki and S.A. Isard
        Large eddy simulation of spore dispersion within the canopy roughness sublayer
        Journal of Fluid Mechanics, 2014, 753:499-534 
         
# CSAT3 Sonic measurement heights(m) on 07/10/2011 (in order that appears in the datafile)

# Sonic		1	2	3	4	5
# Height	3.50    1.40    0.70    2.10    2.80

# Therefore, in order to read from the lowest to the highest sonic use (in Fortran):

     READ(1,*)timestamp,count,u_r(5,i),v_r(5,i),w_r(5,i),T_r(5,i), &
                              u_r(2,i),v_r(2,i),w_r(2,i),T_r(2,i), &
		              u_r(1,i),v_r(1,i),w_r(1,i),T_r(1,i), &
                              u_r(3,i),v_r(3,i),w_r(3,i),T_r(3,i), &
		              u_r(4,i),v_r(4,i),w_r(4,i),T_r(4,i),flags(1:20)


# This reading order will store the sonics from lowest to highest in each variable, so that
#  u_r(1,:) is the lowest and u_r(5,:) is the highest one

# Sampling frequency is 20Hz

# Plant Heights(m) on 07/10/2011						
# Date	Plant1	Plant2	Plant3	Plant4	Plant5	Plant6	Average
  0710    2.06    2.14    2.10    2.14    1.98    1.86     2.05

# We use an average canopy height of 2.05m

# Leaf area index measured is 3.3 m2/m2

# The field data were collected by M. Chamecki and S.A. Isard with funding from NSF grant AGS1005363

#The following citations are suggested if you use these data in your work:
# S.C. Gleicher, M. Chamecki, S.A. Isard, Y. Pan and G.G. Katul (2014), Interpreting three-dimensional spore concentration measurements and escape fraction in a crop canopy using a coupled Eulerian-Lagrangian stochastic model, Agricultural and Forest Meteorology, 194, 118-131.
# M. Chamecki (2013), Persistence of velocity fluctuations in non-Gaussian turbulence within and above plant canopies, Physics of Fluids, 25, 1-14.