Geocat ch 11 (MSG ch 7) clear sky brightness temperature Variable Comparison

report produced with glance, version 0.2.6.23
comparison generated Wed Sep 29 04:07:24 2010 by user graemem on craackly.ssec.wisc.edu

file A:

path: /data/graemem/crtm_geocat_vs_fwait_20100922/test_data/rtm_output/geocatRTM.Meteosat-9.2008157.120000.hdf
md5sum for file A: bbdd281a6f1ce48ed84f1ab3274e2087
last modified: Wed Sep 22 22:25:04 2010

file B:

path: /data/graemem/crtm_geocat_vs_fwait_20100922/test_data/rtm_output/MSG9_SEVIRI_2008157_1200_00_CRTM.nc
md5sum for file B: ac4ac85a9b873ab7302901a4a9f3d1c3
last modified: Wed Sep 29 03:08:39 2010

A configuration file was used to control the production report.
Please see this copy of the configuration file for details.

latitude in A: pixel_latitude
latitude in B: Latitude
longitude in A: pixel_longitude
longitude in B: Longitude

WARNING: 10280820 data points (74.61% of all data) show possible mismatch in values stored in file a and file b longitude and latitude values. Depending on the degree of mismatch, some data value comparisons in this report may be distorted or spatially nonsensical. Please consider re-running this report and including an examination of your longitude and latitude variables with appropriate epsilons in order to analyze the significance of the difference.
View mismatching points in A's lon/lat system
View mismatching points in B's lon/lat system

Original Data

Comparison Information

variable name in A: channel_11_brightness_temperature_clear
variable name in B: BtClr11Pixel
epsilon value: None
"missing" data value in A: -32768
"missing" data value in B: -999.0

Statistical Summary

Finite Data Statistics
a_finite_count*: 9902855
a_finite_fraction*: 0.7187
b_finite_count*: 9902855
b_finite_fraction*: 0.7187
common_finite_count*: 9902855
common_finite_fraction*: 0.7187
finite_in_only_one_count*: 0
finite_in_only_one_fraction*: 0

General Statistics
a_missing_value*: -32768
b_missing_value*: -999
epsilon*: None
epsilon_percent*: None
max_a*: 321.3
max_b*: 317.2
min_a*: 245.4
min_b*: 244
num_data_points*: 13778944
shape*: (3712, 3712)
spatially_invalid_pts_ignored_in_a*: 3498123
spatially_invalid_pts_ignored_in_b*: 3498123

Missing Value Statistics
a_missing_count*: 377966
a_missing_fraction*: 0.02743
b_missing_count*: 377966
b_missing_fraction*: 0.02743
common_missing_count*: 377966
common_missing_fraction*: 0.02743

NaN Statistics
a_nan_count*: 0
a_nan_fraction*: 0
b_nan_count*: 0
b_nan_fraction*: 0
common_nan_count*: 0
common_nan_fraction*: 0

Numerical Comparison Statistics
correlation*: 0.4409
diff_outside_epsilon_count*: 0
diff_outside_epsilon_fraction*: 0
max_diff*: 21.13
mean_diff*: 1.205
median_diff*: 0.7725
perfect_match_count*: 0
perfect_match_fraction*: 0
r-squared correlation*: 0.1944
rms_diff*: 1.936
std_diff*: 1.515
trouble_points_count*: 0
trouble_points_fraction*: 0