AERONET AREA ASCII DATA EXTRACTION

The goal is to perform automatically a SDS extraction from a MODIS product (here a LEVEL1B image) for several defined areas (here AERONET photometer locations)

HDFLook command file

verbose 
clear_data
set_home_directory /users/louis
set_tmp_directory  /tmp
set_map_directory  /users/louis/MAPS/

set_output_directory /users/louis/OUTPUTS
set_input_directory  /users/louis/RIEDI/

set_input_hdf_file MOD021KM.A2003040.1810.004.2003041082614.hdf

# OUTPUT RECORD DESCRIPTION

pixel_dump_set linefeed \
	       SDSName="Height" format="%.0f" \
	       SDSName="SensorZenith" format="%.2f" \
	       SDSName="SensorAzimuth" format="%.2f" \
	       SDSName="SolarZenith" format="%.2f" \
	       SDSName="SolarAzimuth" format="%.2f"  \
               linefeed \
	       SDSName="EV_1KM_RefSB" scaling=Reflectance format="%.2f" DataNb=yes \
               linefeed \
	       SDSName="EV_1KM_Emissive" scaling=Radiance format="%.2f" DataNb=yes \
               linefeed \
	       SDSName="EV_250_Aggr1km_RefSB" scaling=Reflectance format="%.2f" DataNb=yes \
               linefeed \
	       SDSName="EV_500_Aggr1km_RefSB" scaling=Reflectance format="%.2f" DataNb=yes

# PERFORM EXTRACTIONS

# EXTRACTION FOR A SINGLE POINT

pixel_dump  Annotation="Maricopa pixel" FileName= "AERONET" Point=33.071,-111.972
pixel_dump  Annotation="La Jolla"   Point=32.5,-117.16

# EXTRACTION FOR A SMALL AREA

pixel_dump  Annotation="Maricopa area" LatitudeMin=33.06 LatitudeMax=33.08 LongitudeMin=-112.0 LongitudeMax=-111.9

Result file


# SHOW OUTPUT RESULT USER SELECTED FORMAT

scaling: None         : "Box number"
scaling: None         : "Raw"
scaling: None         : "Column"
scaling: None         : "Latitude"
scaling: None         : "Longitude"
    LineFeed
scaling: Default      : "Height" format=" %.0f" 
scaling: Default      : "SensorZenith" format=" %.2f" 
scaling: Default      : "SensorAzimuth" format=" %.2f" 
scaling: Default      : "SolarZenith" format=" %.2f" 
scaling: Default      : "SolarAzimuth" format=" %.2f" 
    LineFeed
scaling: Reflectance  : "EV_1KM_RefSB" format=" %.2f"  DataNb=Yes 
    LineFeed
scaling: Radiance     : "EV_1KM_Emissive" format=" %.2f"  DataNb=Yes 
    LineFeed
scaling: Reflectance  : "EV_250_Aggr1km_RefSB" format=" %.2f"  DataNb=Yes 
    LineFeed
scaling: Reflectance  : "EV_500_Aggr1km_RefSB" format=" %.2f"  DataNb=Yes 

# OUTPUT FOR SINGLE POINTS

Maricopa pixel 2003/40 18:10   1   121   460 33.0761 -111.9826
 338 19.51 99.76 52.49 151.61
 15  0.13 0.12 0.10 0.10 0.10 0.15 0.11 0.15 0.08 0.15 0.19 0.15 0.09 0.12 0.01
 16  0.47 0.53 0.52 0.49 0.14 0.40 1.09 2.60 6.94 4.73 7.55 7.09 4.65 3.62 3.16 2.41
 2  0.11 0.17
 5  0.11 0.10 0.20 0.18 0.14
La Jolla 2003/40 18:10   2   244   149 32.5095 -117.1636
 -33 49.34 96.26 54.30 145.85
 15  0.20 0.18 0.15 0.13 0.24 0.15 0.11 0.15 0.08 0.15 0.19 0.09 0.08 0.09 0.06
 16  0.20 0.22 0.23 0.22 0.07 0.20 0.83 1.78 4.24 3.08 4.78 4.52 3.21 2.72 2.49 2.07
 2  0.10 0.10
 5  0.16 0.12 0.09 0.07 0.05

# OUTPUT FOR THE SMALL AREA

Maricopa area 2003/40 18:10   3   119   463 33.0794 -111.9335
 332 19.50 98.41 52.52 151.64
 15  0.13 0.12 0.11 0.10 0.10 0.15 0.11 0.15 0.08 0.15 0.19 0.13 0.08 0.10 0.01
 16  0.44 0.51 0.47 0.44 0.13 0.38 1.15 2.60 6.56 4.41 7.27 6.92 4.56 3.65 3.12 2.34
 2  0.11 0.15
 5  0.11 0.10 0.17 0.16 0.13
Maricopa area 2003/40 18:10   3   119   464 33.0779 -111.9216
 332 19.50 98.41 52.52 151.64
 15  0.13 0.12 0.10 0.10 0.10 0.15 0.11 0.15 0.08 0.15 0.19 0.13 0.08 0.09 0.01
 16  0.42 0.45 0.45 0.43 0.13 0.38 1.14 2.57 6.48 4.37 7.18 6.82 4.51 3.63 3.10 2.36
 2  0.11 0.14
 5  0.11 0.10 0.16 0.15 0.13
Maricopa area 2003/40 18:10   3   119   465 33.0763 -111.9098
 354 19.05 98.44 52.49 151.70
 15  0.14 0.13 0.12 0.11 0.11 0.15 0.11 0.15 0.08 0.15 0.19 0.14 0.09 0.11 0.02
 16  0.41 0.41 0.44 0.41 0.12 0.35 1.09 2.41 6.09 4.19 6.72 6.33 4.26 3.46 3.00 2.33
 2  0.12 0.16
 5  0.12 0.11 0.18 0.17 0.14
 ..............................
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 ..............................
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Maricopa area 2003/40 18:10   3   122   463 33.0621 -111.9486
 338 19.51 99.76 52.49 151.61
 15  0.11 0.09 0.07 0.07 0.06 0.06 0.11 0.06 0.08 0.15 0.19 0.11 0.06 0.08 0.01
 16  0.33 0.42 0.42 0.42 0.14 0.41 1.16 2.70 6.92 4.54 7.63 7.21 4.79 3.80 3.27 2.45
 2  0.06 0.12
 5  0.08 0.06 0.12 0.10 0.06
Maricopa area 2003/40 18:10   3   122   464 33.0606 -111.9367
 338 19.51 99.76 52.49 151.61
 15  0.11 0.09 0.07 0.06 0.06 0.06 0.11 0.06 0.08 0.15 0.19 0.09 0.05 0.07 0.01
 16  0.34 0.44 0.41 0.41 0.14 0.40 1.15 2.67 6.81 4.50 7.53 7.16 4.74 3.77 3.27 2.41
 2  0.06 0.10
 5  0.08 0.06 0.10 0.09 0.06