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readahi8fulldisk_vis.py
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readahi8fulldisk_vis.py
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# -*- coding: utf-8 -*-
"""
Created on Thu Jul 9 09:31:28 2020
@author: guoyuchen
@e-mail：guoyc1994@163.com
@tel: 15801369263
"""
import numpy as np
def read_Himawari(inputfile):
resolution=int(inputfile[-12])
if resolution==1:
res=12100000
nlin=1100
ncol=11000
elif resolution==2:
res=3025000
nlin=550
ncol=5500
else:
res=48400000
nlin=2200
ncol=22000
band=int(inputfile[-21:-19])
if band < 7:
formation = [('Block number1', 'i1', 1), \
('Block length1', 'i2', 1), \
('Total number of header blocks ', 'i2', 1), \
('Byte order', 'i1', 1), \
('Satellite name', 'S1', 16), \
('Processing center name', 'S1', 16), \
('Observation area', 'S1', 4), \
('Other observation information', 'S1', 2), \
('Observation timeline', 'i2', 1), \
('Observation start time', 'float64', 1), \
('Observation end time', 'float64', 1), \
('File creation time', 'float64', 1), \
('Total header length', 'i4', 1), \
('Total data length', 'i4', 1), \
('Quality flag 1', 'i1', 1), \
('Quality flag 2 ', 'i1', 1), \
('Quality flag 3', 'i1', 1), \
('Quality flag 4', 'i1', 1), \
('File format version', 'S1', 32), \
('File name ', 'S1', 128), \
('Spare1', 'S1', 40), \
('Block number2', 'i1', 1), \
('Block length2', 'i2', 1), \
('Number of bits per pixel', 'i2', 1), \
('Number of columns', 'i2', 1), \
('Number of lines', 'i2', 1), \
('Compression flag for data', 'i1', 1), \
('Spare2', 'S1', 40), \
('Block number3', 'i1', 1), \
('Block length3', 'i2', 1), \
('sub_lon', 'float64', 1), \
('Column scaling factor', 'i4', 1), \
('Line scaling factor', 'i4', 1), \
('Column offset', 'float32', 1), \
('Line offset', 'float32', 1), \
('Distance from Earth’s center to virtual satellite', 'float64', 1), \
('Earth’s equatorial radius', 'float64', 1), \
('Earth’s polar radius', 'float64', 1), \
('var1', 'float64', 1), \
('var2', 'float64', 1), \
('var3', 'float64', 1), \
('Coefficient for sd', 'float64', 1), \
('Resampling types', 'i2', 1), \
('Resampling size', 'i2', 1), \
('Spare3', 'S1', 40), \
('Block number4', 'i1', 1), \
('Block length4', 'i2', 1), \
('Navigation information time', 'float64', 1), \
('SSP longitude', 'float64', 1), \
('SSP latitude', 'float64', 1), \
('Distance from Earth’s center to Satellite', 'float64', 1), \
('Nadir longitude', 'float64', 1), \
('Nadir latitude', 'float64', 1), \
('Sun’s position', 'float64', 3), \
('Moon’s position', 'float64', 3), \
('Spare4', 'S1', 40), \
('Block number5', 'i1', 1), \
('Block length5', 'i2', 1), \
('Band number', 'i2', 1), \
('Central wave length', 'float64', 1), \
('Valid number of bits per pixel', 'i2', 1), \
('Count value of error pixels', 'uint16', 1), \
('Count value of pixels outside scan area', 'uint16', 1), \
('Slope for count-radiance conversion equation ', 'float64', 1), \
('Intercept for count-radiance conversion equation', 'float64', 1), \
('Coefficient for transformation from radiance to albedo', 'float64', 1), \
('Update time of the values of the following No. 12 and No. 13', 'float64', 1), \
('Calibrated Slope for count-radiance conversion equation_updated value of No. 8 of this block ', 'float64', 1),\
('Calibrated Intercept for count-radiance conversion equation_updated value of No. 9 of this block ', 'float64', 1),\
('Spare5', 'S1', 80), \
('Block number6', 'i1', 1), \
('Block length6', 'i2', 1), \
('GSICS calibration coefficient_Intercept', 'float64', 1), \
('GSICS calibration coefficient_Slope', 'float64', 1), \
('GSICS calibration coefficient_Quadratic term', 'float64', 1), \
('Radiance bias for standard scene', 'float64', 1), \
('Uncertainty of radiance bias for standard scene', 'float64', 1), \
('Radiance for standard scene', 'float64', 1), \
('Start time of GSICS Correction validity period', 'float64', 1), \
('End time of GSICS Correction validity period', 'float64', 1), \
('Radiance validity range of GSICS calibration coefficients_upper limit', 'float32', 1), \
('Radiance validity range of GSICS calibration coefficients_lower limit', 'float32', 1), \
('File name of GSICS Correction', 'S1', 128), \
('Spare6', 'S1', 56), \
('Block number7', 'i1', 1), \
('Block length7', 'i2', 1), \
('Total number of segments', 'i1', 1), \
('Segment sequence number', 'i1', 1), \
('First line number of image segment', 'i2', 1), \
('Spare7', 'S1', 40), \
('Block number8', 'i1', 1), \
('Block length8', 'i2', 1), \
('Center column of rotation', 'float32', 1), \
('Center line of rotation', 'float32', 1), \
('Amount of rotational correction', 'float64', 1), \
('Number of correction information data for column and line direction', 'i2', 1), \
('Line number after rotation', 'i2', 1), \
('Shift amount for column direction', 'float32', 1), \
('Shift amount for line direction8', 'float32', 1), \
('Spare8', 'S1', 50), \
('Block number9', 'i1', 1), \
('Block length9', 'i2', 1), \
('Number of observation times9', 'i2', 1), \
('Line number9', 'i2', 1), \
('Observation time9', 'float64', 1), \
('Spare9', 'S1', 70), \
('Block number10', 'i1', 1), \
('Block length10', 'i4', 1), \
('Number of error information data', 'i2', 1), \
('Line number10', 'i2', 1), \
('Number of error pixels per line10', 'i2', 1), \
('Spare10', 'S1', 36), \
('Block number11', 'i1', 1), \
('Block length11', 'i2', 1), \
('Spare11', 'S1', 256), \
('Count value of each pixel', 'i2', res)]
else:
formation=[('Block number1','i1',1),\
('Block length1','i2',1),\
('Total number of header blocks ','i2',1),\
('Byte order','i1',1),\
('Satellite name','S1',16),\
('Processing center name','S1',16),\
('Observation area','S1',4),\
('Other observation information','S1',2),\
('Observation timeline','i2',1),\
('Observation start time','float64',1),\
('Observation end time','float64',1),\
('File creation time','float64',1),\
('Total header length','i4',1),\
('Total data length','i4',1),\
('Quality flag 1','i1',1),\
('Quality flag 2 ','i1',1),\
('Quality flag 3','i1',1),\
('Quality flag 4','i1',1),\
('File format version','S1',32),\
('File name ','S1',128),\
('Spare1','S1',40),\
('Block number2','i1',1),\
('Block length2','i2',1),\
('Number of bits per pixel','i2',1),\
('Number of columns','i2',1),\
('Number of lines','i2',1),\
('Compression flag for data','i1',1),\
('Spare2','S1',40),\
('Block number3','i1',1),\
('Block length3','i2',1),\
('sub_lon','float64',1),\
('Column scaling factor','i4',1),\
('Line scaling factor','i4',1),\
('Column offset','float32',1),\
('Line offset','float32',1),\
('Distance from Earth’s center to virtual satellite','float64',1),\
('Earth’s equatorial radius','float64',1),\
('Earth’s polar radius','float64',1),\
('var1','float64',1),\
('var2','float64',1),\
('var3','float64',1),\
('Coefficient for sd','float64',1),\
('Resampling types','i2',1),\
('Resampling size','i2',1),\
('Spare3','S1',40),\
('Block number4','i1',1),\
('Block length4','i2',1),\
('Navigation information time','float64',1),\
('SSP longitude','float64',1),\
('SSP latitude','float64',1),\
('Distance from Earth’s center to Satellite','float64',1),\
('Nadir longitude','float64',1),\
('Nadir latitude','float64',1),\
('Sun’s position','float64',3),\
('Moon’s position','float64',3),\
('Spare4','S1',40),\
('Block number5','i1',1),\
('Block length5','i2',1),\
('Band number','i2',1),\
('Central wave length','float64',1),\
('Valid number of bits per pixel','i2',1),\
('Count value of error pixels','i2',1),\
('Count value of pixels outside scan area','i2',1),\
('Slope for count-radiance conversion equation ','float64',1),\
('Intercept for count-radiance conversion equation','float64',1),\
('radiance to brightness temperature_c0','float64',1),\
('radiance to brightness temperature_c1','float64',1),\
('radiance to brightness temperature_c2','float64',1),\
('brightness temperature to radiance_C0','float64',1),\
('brightness temperature to radianceC1','float64',1),\
('brightness temperature to radianceC2','float64',1),\
('Speed of light','float64',1),\
('Planck constant','float64',1),\
('Boltzmann constant','float64',1),\
('Spare5','S1',40), \
('Block number6', 'i1', 1), \
('Block length6', 'i2', 1), \
('GSICS calibration coefficient_Intercept', 'float64', 1), \
('GSICS calibration coefficient_Slope', 'float64', 1), \
('GSICS calibration coefficient_Quadratic term', 'float64', 1), \
('Radiance bias for standard scene', 'float64', 1), \
('Uncertainty of radiance bias for standard scene', 'float64', 1), \
('Radiance for standard scene', 'float64', 1), \
('Start time of GSICS Correction validity period', 'float64', 1), \
('End time of GSICS Correction validity period', 'float64', 1), \
('Radiance validity range of GSICS calibration coefficients_upper limit', 'float32', 1), \
('Radiance validity range of GSICS calibration coefficients_lower limit', 'float32', 1), \
('File name of GSICS Correction', 'S1', 128), \
('Spare6', 'S1', 56), \
('Block number7', 'i1', 1), \
('Block length7', 'i2', 1), \
('Total number of segments', 'i1', 1), \
('Segment sequence number', 'i1', 1), \
('First line number of image segment', 'i2', 1), \
('Spare7', 'S1', 40), \
('Block number8', 'i1', 1), \
('Block length8', 'i2', 1), \
('Center column of rotation', 'float32', 1), \
('Center line of rotation', 'float32', 1), \
('Amount of rotational correction', 'float64', 1), \
('Number of correction information data for column and line direction', 'i2', 1), \
('Line number after rotation', 'i2', 1), \
('Shift amount for column direction', 'float32', 1), \
('Shift amount for line direction8', 'float32', 1), \
('Spare8', 'S1', 50), \
('Block number9', 'i1', 1), \
('Block length9', 'i2', 1), \
('Number of observation times9', 'i2', 1), \
('Line number9', 'i2', 1), \
('Observation time9', 'float64', 1), \
('Spare9', 'S1', 70), \
('Block number10', 'i1', 1), \
('Block length10', 'i4', 1), \
('Number of error information data', 'i2', 1), \
('Line number10', 'i2', 1), \
('Number of error pixels per line10', 'i2', 1), \
('Spare10', 'S1', 36), \
('Block number11', 'i1', 1), \
('Block length11', 'i2', 1), \
('Spare11', 'S1', 256), \
('Count value of each pixel', 'i2', res)]
data=np.fromfile(inputfile,dtype=formation)
band=data['Count value of each pixel'].reshape(nlin,ncol)
return band
def read_Himawari_info(inputfile):
resolution=int(inputfile[-12])
if resolution==1:
res=12100000
elif resolution==2:
res=3025000
else:
res=48400000
band=int(inputfile[-21:-19])
if band < 7:
formation = [('Block number1', 'i1', 1), \
('Block length1', 'i2', 1), \
('Total number of header blocks ', 'i2', 1), \
('Byte order', 'i1', 1), \
('Satellite name', 'S1', 16), \
('Processing center name', 'S1', 16), \
('Observation area', 'S1', 4), \
('Other observation information', 'S1', 2), \
('Observation timeline', 'i2', 1), \
('Observation start time', 'float64', 1), \
('Observation end time', 'float64', 1), \
('File creation time', 'float64', 1), \
('Total header length', 'i4', 1), \
('Total data length', 'i4', 1), \
('Quality flag 1', 'i1', 1), \
('Quality flag 2 ', 'i1', 1), \
('Quality flag 3', 'i1', 1), \
('Quality flag 4', 'i1', 1), \
('File format version', 'S1', 32), \
('File name ', 'S1', 128), \
('Spare1', 'S1', 40), \
('Block number2', 'i1', 1), \
('Block length2', 'i2', 1), \
('Number of bits per pixel', 'i2', 1), \
('Number of columns', 'i2', 1), \
('Number of lines', 'i2', 1), \
('Compression flag for data', 'i1', 1), \
('Spare2', 'S1', 40), \
('Block number3', 'i1', 1), \
('Block length3', 'i2', 1), \
('sub_lon', 'float64', 1), \
('Column scaling factor', 'i4', 1), \
('Line scaling factor', 'i4', 1), \
('Column offset', 'float32', 1), \
('Line offset', 'float32', 1), \
('Distance from Earth’s center to virtual satellite', 'float64', 1), \
('Earth’s equatorial radius', 'float64', 1), \
('Earth’s polar radius', 'float64', 1), \
('var1', 'float64', 1), \
('var2', 'float64', 1), \
('var3', 'float64', 1), \
('Coefficient for sd', 'float64', 1), \
('Resampling types', 'i2', 1), \
('Resampling size', 'i2', 1), \
('Spare3', 'S1', 40), \
('Block number4', 'i1', 1), \
('Block length4', 'i2', 1), \
('Navigation information time', 'float64', 1), \
('SSP longitude', 'float64', 1), \
('SSP latitude', 'float64', 1), \
('Distance from Earth’s center to Satellite', 'float64', 1), \
('Nadir longitude', 'float64', 1), \
('Nadir latitude', 'float64', 1), \
('Sun’s position', 'float64', 3), \
('Moon’s position', 'float64', 3), \
('Spare4', 'S1', 40), \
('Block number5', 'i1', 1), \
('Block length5', 'i2', 1), \
('Band number', 'i2', 1), \
('Central wave length', 'float64', 1), \
('Valid number of bits per pixel', 'i2', 1), \
('Count value of error pixels', 'uint16', 1), \
('Count value of pixels outside scan area', 'uint16', 1), \
('Slope for count-radiance conversion equation ', 'float64', 1), \
('Intercept for count-radiance conversion equation', 'float64', 1), \
('Coefficient for transformation from radiance to albedo', 'float64', 1), \
('Update time of the values of the following No. 12 and No. 13', 'float64', 1), \
('Calibrated Slope for count-radiance conversion equation_updated value of No. 8 of this block ', 'float64', 1),\
('Calibrated Intercept for count-radiance conversion equation_updated value of No. 9 of this block ', 'float64', 1),\
('Spare5', 'S1', 80), \
('Block number6', 'i1', 1), \
('Block length6', 'i2', 1), \
('GSICS calibration coefficient_Intercept', 'float64', 1), \
('GSICS calibration coefficient_Slope', 'float64', 1), \
('GSICS calibration coefficient_Quadratic term', 'float64', 1), \
('Radiance bias for standard scene', 'float64', 1), \
('Uncertainty of radiance bias for standard scene', 'float64', 1), \
('Radiance for standard scene', 'float64', 1), \
('Start time of GSICS Correction validity period', 'float64', 1), \
('End time of GSICS Correction validity period', 'float64', 1), \
('Radiance validity range of GSICS calibration coefficients_upper limit', 'float32', 1), \
('Radiance validity range of GSICS calibration coefficients_lower limit', 'float32', 1), \
('File name of GSICS Correction', 'S1', 128), \
('Spare6', 'S1', 56), \
('Block number7', 'i1', 1), \
('Block length7', 'i2', 1), \
('Total number of segments', 'i1', 1), \
('Segment sequence number', 'i1', 1), \
('First line number of image segment', 'i2', 1), \
('Spare7', 'S1', 40), \
('Block number8', 'i1', 1), \
('Block length8', 'i2', 1), \
('Center column of rotation', 'float32', 1), \
('Center line of rotation', 'float32', 1), \
('Amount of rotational correction', 'float64', 1), \
('Number of correction information data for column and line direction', 'i2', 1), \
('Line number after rotation', 'i2', 1), \
('Shift amount for column direction', 'float32', 1), \
('Shift amount for line direction8', 'float32', 1), \
('Spare8', 'S1', 50), \
('Block number9', 'i1', 1), \
('Block length9', 'i2', 1), \
('Number of observation times9', 'i2', 1), \
('Line number9', 'i2', 1), \
('Observation time9', 'float64', 1), \
('Spare9', 'S1', 70), \
('Block number10', 'i1', 1), \
('Block length10', 'i4', 1), \
('Number of error information data', 'i2', 1), \
('Line number10', 'i2', 1), \
('Number of error pixels per line10', 'i2', 1), \
('Spare10', 'S1', 36), \
('Block number11', 'i1', 1), \
('Block length11', 'i2', 1), \
('Spare11', 'S1', 256), \
('Count value of each pixel', 'i2', res)]
else:
formation=[('Block number1','i1',1),\
('Block length1','i2',1),\
('Total number of header blocks ','i2',1),\
('Byte order','i1',1),\
('Satellite name','S1',16),\
('Processing center name','S1',16),\
('Observation area','S1',4),\
('Other observation information','S1',2),\
('Observation timeline','i2',1),\
('Observation start time','float64',1),\
('Observation end time','float64',1),\
('File creation time','float64',1),\
('Total header length','i4',1),\
('Total data length','i4',1),\
('Quality flag 1','i1',1),\
('Quality flag 2 ','i1',1),\
('Quality flag 3','i1',1),\
('Quality flag 4','i1',1),\
('File format version','S1',32),\
('File name ','S1',128),\
('Spare1','S1',40),\
('Block number2','i1',1),\
('Block length2','i2',1),\
('Number of bits per pixel','i2',1),\
('Number of columns','i2',1),\
('Number of lines','i2',1),\
('Compression flag for data','i1',1),\
('Spare2','S1',40),\
('Block number3','i1',1),\
('Block length3','i2',1),\
('sub_lon','float64',1),\
('Column scaling factor','i4',1),\
('Line scaling factor','i4',1),\
('Column offset','float32',1),\
('Line offset','float32',1),\
('Distance from Earth’s center to virtual satellite','float64',1),\
('Earth’s equatorial radius','float64',1),\
('Earth’s polar radius','float64',1),\
('var1','float64',1),\
('var2','float64',1),\
('var3','float64',1),\
('Coefficient for sd','float64',1),\
('Resampling types','i2',1),\
('Resampling size','i2',1),\
('Spare3','S1',40),\
('Block number4','i1',1),\
('Block length4','i2',1),\
('Navigation information time','float64',1),\
('SSP longitude','float64',1),\
('SSP latitude','float64',1),\
('Distance from Earth’s center to Satellite','float64',1),\
('Nadir longitude','float64',1),\
('Nadir latitude','float64',1),\
('Sun’s position','float64',3),\
('Moon’s position','float64',3),\
('Spare4','S1',40),\
('Block number5','i1',1),\
('Block length5','i2',1),\
('Band number','i2',1),\
('Central wave length','float64',1),\
('Valid number of bits per pixel','i2',1),\
('Count value of error pixels','i2',1),\
('Count value of pixels outside scan area','i2',1),\
('Slope for count-radiance conversion equation ','float64',1),\
('Intercept for count-radiance conversion equation','float64',1),\
('radiance to brightness temperature_c0','float64',1),\
('radiance to brightness temperature_c1','float64',1),\
('radiance to brightness temperature_c2','float64',1),\
('brightness temperature to radiance_C0','float64',1),\
('brightness temperature to radianceC1','float64',1),\
('brightness temperature to radianceC2','float64',1),\
('Speed of light','float64',1),\
('Planck constant','float64',1),\
('Boltzmann constant','float64',1),\
('Spare5','S1',40), \
('Block number6', 'i1', 1), \
('Block length6', 'i2', 1), \
('GSICS calibration coefficient_Intercept', 'float64', 1), \
('GSICS calibration coefficient_Slope', 'float64', 1), \
('GSICS calibration coefficient_Quadratic term', 'float64', 1), \
('Radiance bias for standard scene', 'float64', 1), \
('Uncertainty of radiance bias for standard scene', 'float64', 1), \
('Radiance for standard scene', 'float64', 1), \
('Start time of GSICS Correction validity period', 'float64', 1), \
('End time of GSICS Correction validity period', 'float64', 1), \
('Radiance validity range of GSICS calibration coefficients_upper limit', 'float32', 1), \
('Radiance validity range of GSICS calibration coefficients_lower limit', 'float32', 1), \
('File name of GSICS Correction', 'S1', 128), \
('Spare6', 'S1', 56), \
('Block number7', 'i1', 1), \
('Block length7', 'i2', 1), \
('Total number of segments', 'i1', 1), \
('Segment sequence number', 'i1', 1), \
('First line number of image segment', 'i2', 1), \
('Spare7', 'S1', 40), \
('Block number8', 'i1', 1), \
('Block length8', 'i2', 1), \
('Center column of rotation', 'float32', 1), \
('Center line of rotation', 'float32', 1), \
('Amount of rotational correction', 'float64', 1), \
('Number of correction information data for column and line direction', 'i2', 1), \
('Line number after rotation', 'i2', 1), \
('Shift amount for column direction', 'float32', 1), \
('Shift amount for line direction8', 'float32', 1), \
('Spare8', 'S1', 50), \
('Block number9', 'i1', 1), \
('Block length9', 'i2', 1), \
('Number of observation times9', 'i2', 1), \
('Line number9', 'i2', 1), \
('Observation time9', 'float64', 1), \
('Spare9', 'S1', 70), \
('Block number10', 'i1', 1), \
('Block length10', 'i4', 1), \
('Number of error information data', 'i2', 1), \
('Line number10', 'i2', 1), \
('Number of error pixels per line10', 'i2', 1), \
('Spare10', 'S1', 36), \
('Block number11', 'i1', 1), \
('Block length11', 'i2', 1), \
('Spare11', 'S1', 256), \
('Count value of each pixel', 'i2', res)]
data=np.fromfile(inputfile,dtype=formation)
return data
def latlon2idx(lon,lat,B,A,H,pi,STAR_POINT_LON,COFF,CFAC):
ANG = np.pi / 180
lon = np.array(lon)
lat = np.array(lat)
lon = lon * ANG
lat = lat * ANG
f = np.arctan(np.tan(lat) * (A * A) / (B * B))
re = B / (np.sqrt(1 - (np.cos(f) * np.cos(f)) * (A * A - B * B) / (A * A)))
r1 = H - re * np.cos(f) * np.cos(lon - (STAR_POINT_LON * ANG))
r2 = 0 - re * np.cos(f) * np.sin(lon - (STAR_POINT_LON * ANG))
r3 = re * np.sin(f)
rn = np.sqrt(r1 * r1 + r2 * r2 + r3 * r3)
x = np.arctan(0 - r2 / r1) * 180 / np.pi
y = np.arcsin(0 - r3 / rn) * 180 / np.pi
col = (COFF + x * CFAC / 2**16).astype(int)
row = (COFF + y * CFAC / 2**16).astype(int)
return col, row
def mergeAHI8(un_path,time,bd,res):
DATA = {}
for i in np.arange(1,11,1):
inputfile = un_path+'/HS_H08_'+time+'_'+bd+'_FLDK_'+res+'_S{:02d}10.DAT'.format(i)
data = read_Himawari(inputfile)
DATA[i] = data
BAND = np.vstack((DATA[1],DATA[2],DATA[3],DATA[4],DATA[5],DATA[6],DATA[7],DATA[8],DATA[9],DATA[10])).astype(int)
return BAND,inputfile
def bandextraction(un_path,time,bd,res):
band,inputfile = mergeAHI8(un_path,time,bd,res)
info = read_Himawari_info(inputfile)
BAND = ToALBEDOorBT(band,info)
band_ccl,longitude,latitude = fulldisktoCCL(BAND,info)
return band_ccl,longitude,latitude
def ToALBEDOorBT(BAND,info):
index = np.where(BAND>0)
indexunvalid = np.where(BAND<=0)
rad = BAND
Slop = float(info['Slope for count-radiance conversion equation '][0])
Int = float(info['Intercept for count-radiance conversion equation'][0])
if int(bd[1:])<7:
c = float(info['Coefficient for transformation from radiance to albedo'])
BAND = (BAND*Slop+Int)*c
BAND[indexunvalid] = -2
else:
h = float(info['Planck constant'][0])
c = float(info['Speed of light'][0])
k = float(info['Boltzmann constant'][0])
wv = float(info['Central wave length'][0])* 1e-6
c0 = float(info['radiance to brightness temperature_c0'][0])
c1 = float(info['radiance to brightness temperature_c1'][0])
c2 = float(info['radiance to brightness temperature_c2'][0])
rad = (rad*Slop+Int)*1e6
Te = h*c/((k*wv)*(np.log(2*h*c*c/((wv**5)*rad)+1)))
BT = c0 + c1 * Te + c2 * Te * Te
BAND[index] = BT
return BAND
def fulldisktoCCL(BAND,info):
B = float(info['Earth’s equatorial radius'][0])
#地球短半轴KM
A = float(info['Earth’s polar radius'][0])
#卫星到质心的距离KM
H = float(info['Distance from Earth’s center to virtual satellite'][0])
#pi
pi = np.pi
#星下点所在经度
STAR_POINT_LON = 140.7
#2KM偏移量
COFF = float(info['Column offset'][0])
#2KM偏移因子
CFAC = float(info['Column scaling factor'][0])
longitude = np.arange(73-1,135+70-22-1,0.02)
latitude = np.arange(55,-55,-0.02)
lon,lat = np.meshgrid(longitude,latitude)
col,row = latlon2idx(lon,lat,B,A,H,pi,STAR_POINT_LON,COFF,CFAC)
#####
band_ccl = np.zeros(lon.shape)
band_ccl = BAND[row,col]
return band_ccl,longitude,latitude
time = '20200701_0800'
un_path="C://Users/guoyuchen/Desktop/fulldisk/output/"
bandlist = ['B03']#,'B02']#['B03','B04','B05','B06','B07','B08','B09','B10','B11','B12','B13','B14','B15','B16']
reslist = ['R10']#,'R20','R05']
bd = 'B01'
#ALLBAND = {}
#for bd in bandlist:
# band_ccl,longitude,latitude = bandextraction(un_path,time,bd,'R05')
# ALLBAND[bd] = band_ccl
res = reslist[0]
DATA = {}
for i in np.arange(1,11,1):
inputfile = un_path+'/HS_H08_'+time+'_'+bd+'_FLDK_'+res+'_S{:02d}10.DAT'.format(i)
data = read_Himawari(inputfile)
DATA[i] = data
BAND = np.vstack((DATA[1],DATA[2],DATA[3],DATA[4],DATA[5],DATA[6],DATA[7],DATA[8],DATA[9],DATA[10])).astype(int)
info = read_Himawari_info(inputfile)
BAND = ToALBEDOorBT(BAND,info)
band_ccl,longitude,latitude = fulldisktoCCL(BAND,info)
'''
img = np.zeros((5500,5500,3))
img[:,:,0] = np.clip(ALLBAND['B01'],0,1)
img[:,:,1] = np.clip(ALLBAND['B02'],0,1)
img[:,:,2] = np.clip(ALLBAND['B01'],0,1)
'''