COMMON ATTRIBUTES

Title: 	Manually categorized initial training data for open-water/sea-ice/cloud discrimination
Author: 	Stephan Paul
Mail: 		stephan.paul@awi.de
Date:		2021-01-22
Reference:	Paul, S. and Huntemann, M.: Improved machine-learning based open-water/sea-ice/cloud discrimination over wintertime Antarctic sea ice using MODIS thermal-infrared imagery, The Cryosphere Discuss. [preprint], https://doi.org/10.5194/tc-2020-159, in review, 2020.
DOI:		https://doi.org/10.5194/tc-2020-159


DATA DESCRIPTION

Filenames:
Filenames of open-water/sea-ice/cloud discrimination (OSCD) initial training data (itd) follow the following convention oscd_itd_[sentinel_reference_swath].txt; where the sentinel-1 reference swaths are in accordance with Table 2 of the 
provided reference article

Columns:
modfile_before_2	Identification [SSS_YYYYJJJ_HHMM] of MODIS swath used temporarily preceding the center MODIS swath [mod_file_center]
modfile_before_1	Identification [SSS_YYYYJJJ_HHMM] of MODIS swath used temporarily preceding the center MODIS swath [mod_file_center]
mod_file_center	Identification [SSS_YYYYJJJ_HHMM] of the center MODIS swath [S=MOD/MYD for Terra or Aqua; Y=Year; J=Day of Year; H=Hour; M=Minute]
modfile_after_1	Identification [SSS_YYYYJJJ_HHMM] of MODIS swath used temporarily following the center MODIS swath [mod_file_center]
modfile_after_2	Identification [SSS_YYYYJJJ_HHMM] of MODIS swath used temporarily following the center MODIS swath [mod_file_center]
lon			Center grid-cell longitude in decimal degree
lat			Center grid-cell latitude in decimal degree
class			Result of the manual categorization [0=open-water/thin-ice; 1=cloud; 2=sea ice]
ch20			Calculated brightness temperatures from MODIS channel 20
ch25			Calculated brightness temperatures from MODIS channel 25
ch31			Calculated brightness temperatures from MODIS channel 31
ch33			Calculated brightness temperatures from MODIS channel 33
ch20norm		Normalized MODIS channel 20 data [(ch20-mean)/std]
ch25norm		Normalized MODIS channel 25 data [(ch25-mean)/std]
ch31norm		Normalized MODIS channel 31 data [(ch31-mean)/std]
ch33norm		Normalized MODIS channel 33 data [(ch33-mean)/std]
ist			Ice-surface temperature (IST) of the center MODIS swath [mod_file_center] calculated from MODIS channels 31 and 32
ist_dm2		IST of MODIS swath [modfile_before_2]
ist_dm1		IST of MODIS swath [modfile_before_1]
ist_dp1		IST of MODIS swath [modfile_after_1]
ist_dp2		IST of MODIS swath [modfile_after_2]
dt_ist_dm2		Time-normalized IST difference to MODIS swath [modfile_before_2]
dt_ist_dm1		Time-normalized IST difference to MODIS swath [modfile_before_1]
dt_ist_dp1		Time-normalized IST difference to MODIS swath [modfile_after_1]
dt_ist_dp2		Time-normalized IST difference to MODIS swath [modfile_after_2]
glcm_ch20_avg		Gray-level co-occurrence matrix (GLCM) metric MEAN for MODIS channel 20
glcm_ch25_avg		GLCM MEAN for MODIS channel 25
glcm_ch31_avg		GLCM MEAN for MODIS channel 31
glcm_ch33_avg		GLCM MEAN for MODIS channel 33
glcm_ch20_var		Gray-level co-occurrence matrix (GLCM) metric VARIANCE for MODIS channel 20
glcm_ch25_var		GLCM VARIANCE for MODIS channel 25
glcm_ch31_var		GLCM VARIANCE for MODIS channel 31
glcm_ch33_var		GLCM VARIANCE for MODIS channel 33
glcm_ch20_con		Gray-level co-occurrence matrix (GLCM) metric CONTRAST for MODIS channel 20
glcm_ch25_con		GLCM CONTRAST for MODIS channel 25
glcm_ch31_con		GLCM CONTRAST for MODIS channel 31
glcm_ch33_con		GLCM CONTRAST for MODIS channel 33
glcm_ch20_ent		Gray-level co-occurrence matrix (GLCM) metric ENTROPY for MODIS channel 20
glcm_ch25_ent		GLCM ENTROPY for MODIS channel 25
glcm_ch31_ent		GLCM ENTROPY for MODIS channel 31
glcm_ch33_ent		GLCM ENTROPY for MODIS channel 33