Print all CALIOP v3 01kmCLay SDS names and attributes in python 2.7

Outputs of a code (see bottom of the page) written in python 2.7 to print all CALIOP v3 01kmCLay SDS names and attributes. All SDS infos:

Id	Name	Nb_Dim	Dim	Type	Nb_attributes
0	Profile_ID	2	[21120, 1]	24	3
1	Latitude	2	[21120, 1]	5	3
2	Longitude	2	[21120, 1]	5	3
3	Profile_Time	2	[21120, 1]	6	3
4	Profile_UTC_Time	2	[21120, 1]	6	3
5	Day_Night_Flag	2	[21120, 1]	20	3
6	Off_Nadir_Angle	2	[21120, 1]	5	3
7	Solar_Zenith_Angle	2	[21120, 1]	5	3
8	Solar_Azimuth_Angle	2	[21120, 1]	5	3
9	Scattering_Angle	2	[21120, 1]	5	3
10	Spacecraft_Position	2	[21120, 3]	6	4
11	Parallel_Column_Reflectance_532	2	[21120, 1]	5	3
12	Parallel_Column_Reflectance_Uncertainty_532	2	[21120, 1]	5	3
13	Perpendicular_Column_Reflectance_532	2	[21120, 1]	5	3
14	Perpendicular_Column_Reflectance_Uncertainty_532	2	[21120, 1]	5	3
15	Column_Integrated_Attenuated_Backscatter_532	2	[21120, 1]	5	3
16	Column_IAB_Cumulative_Probability	2	[21120, 1]	5	3
17	Tropopause_Height	2	[21120, 1]	5	3
18	Tropopause_Temperature	2	[21120, 1]	5	3
19	IGBP_Surface_Type	2	[21120, 1]	20	3
20	NSIDC_Surface_Type	2	[21120, 1]	21	3
21	Lidar_Surface_Elevation	2	[21120, 2]	5	3
22	DEM_Surface_Elevation	2	[21120, 1]	5	3
23	Number_Layers_Found	2	[21120, 1]	20	3
24	Layer_Top_Altitude	2	[21120, 10]	5	3
25	Layer_Base_Altitude	2	[21120, 10]	5	3
26	Layer_Top_Pressure	2	[21120, 10]	5	3
27	Midlayer_Pressure	2	[21120, 10]	5	3
28	Layer_Base_Pressure	2	[21120, 10]	5	3
29	Layer_Top_Temperature	2	[21120, 10]	5	3
30	Midlayer_Temperature	2	[21120, 10]	5	3
31	Layer_Base_Temperature	2	[21120, 10]	5	3
32	Attenuated_Backscatter_Statistics_532	2	[21120, 60]	5	3
33	Integrated_Attenuated_Backscatter_532	2	[21120, 10]	5	3
34	Integrated_Attenuated_Backscatter_Uncertainty_532	2	[21120, 10]	5	3
35	Attenuated_Backscatter_Statistics_1064	2	[21120, 60]	5	3
36	Integrated_Attenuated_Backscatter_1064	2	[21120, 10]	5	3
37	Integrated_Attenuated_Backscatter_Uncertainty_1064	2	[21120, 10]	5	3
38	Volume_Depolarization_Ratio_Statistics	2	[21120, 60]	5	3
39	Integrated_Volume_Depolarization_Ratio	2	[21120, 10]	5	3
40	Integrated_Volume_Depolarization_Ratio_Uncertainty	2	[21120, 10]	5	3
41	Attenuated_Total_Color_Ratio_Statistics	2	[21120, 60]	5	3
42	Integrated_Attenuated_Total_Color_Ratio	2	[21120, 10]	5	3
43	Integrated_Attenuated_Total_Color_Ratio_Uncertainty	2	[21120, 10]	5	3
44	Overlying_Integrated_Attenuated_Backscatter_532	2	[21120, 10]	5	3
45	Layer_IAB_QA_Factor	2	[21120, 10]	5	3
46	CAD_Score	2	[21120, 10]	20	3
47	Feature_Classification_Flags	2	[21120, 10]	23	3

SDS attributes

Profile ID

units NoUnits
valid_range 1...3153600000
format Int_32

Latitude

units deg
valid_range 90.0...90.0
format Float_32

Longitude

units deg
valid_range 180.0...180.0
format Float_32

Profile Time

units sec
valid_range 4.204E8...7.389E8
format Float_64

Profile UTC Time

units NoUnits
valid_range 60426...160601
format Float_64

Day Night Flag

units NoUnits
valid_range 0...1
format Int_8

Off Nadir Angle

units deg
valid_range 0.0...5.0
format Float_32

Solar Zenith Angle

units deg
valid_range 0.0...180.0
format Float_32

Solar Azimuth Angle

units deg
valid_range 180.0...180.0
format Float_32

Scattering Angle

units deg
valid_range 0.0...180.0
format Float_32

Spacecraft Position

units km
valid_range 8000.0 ... 8000.0
fillvalue 9999.0
format Float_64

Parallel Column Reflectance 532

units NoUnits
valid_range 0.0...2.0
format Float_32

Parallel Column Reflectance Uncertainty 532

units NoUnits
valid_range 0.0...TBD
format Float_32

Perpendicular Column Reflectance 532

units NoUnits
valid_range 0.0...2.0
format Float_32

Perpendicular Column Reflectance Uncertainty 532

units NoUnits
valid_range 0.0...TBD
format Float_32

Column Integrated Attenuated Backscatter 532

units 1/sr
valid_range 0.0...2.0
format Float_32

Column IAB Cumulative Probability

units NoUnits
valid_range 0.0...1.0
format Float_32

Tropopause Height

units km
valid_range 4...22
format Float_32

Tropopause Temperature

units degrees C
valid_range 100...20
format Float_32

IGBP Surface Type

units NoUnits
valid_range 1...18
format Int_8

NSIDC Surface Type

units NoUnits
valid_range 0...255
format Uint_8

Lidar Surface Elevation

units km
valid_range 1.0...9.0
format Float_32

DEM Surface Elevation

units km
valid_range 1.0...9.0
format Float_32

Number Layers Found

units NoUnits
valid_range 0...10
format Int_8

Layer Top Altitude

units km
valid_range 0.5...20.2
format Float_32

Layer Base Altitude

units km
valid_range 0.5...20.2
format Float_32

Layer Top Pressure

units hPA
valid_range 1...1086
format Float_32

Midlayer Pressure

units hPA
valid_range 1...1086
format Float_32

Layer Base Pressure

units hPA
valid_range 1...1086
format Float_32

Layer Top Temperature

units degrees C
valid_range 110...60
format Float_32

Midlayer Temperature

units degrees C
valid_range 110...60
format Float_32

Layer Base Temperature

units degrees C
valid_range 110...60
format Float_32

Attenuated Backscatter Statistics 532

units 1/km 1/sr
valid_range N/A
format Float_32

Integrated Attenuated Backscatter 532

units 1/sr
valid_range 0.0...1.8
format Float_32

Integrated Attenuated Backscatter Uncertainty 532

units 1/sr
valid_range 0.0...0.5
format Float_32

Attenuated Backscatter Statistics 1064

units 1/km 1/sr
valid_range N/A
format Float_32

Integrated Attenuated Backscatter 1064

units 1/sr
valid_range 0.0...1.8
format Float_32

Integrated Attenuated Backscatter Uncertainty 1064

units 1/sr
valid_range 0.0...0.5
format Float_32

Volume Depolarization Ratio Statistics

units NoUnits
valid_range N/A
format Float_32

Integrated Volume Depolarization Ratio

units NoUnits
valid_range 0.0...1.0
format Float_32

Integrated Volume Depolarization Ratio Uncertainty

units NoUnits
valid_range 0.0...2.0
format Float_32

Attenuated Total Color Ratio Statistics

units NoUnits
valid_range N/A
format Float_32

Integrated Attenuated Total Color Ratio

units NoUnits
valid_range 0.0...2.0
format Float_32

Integrated Attenuated Total Color Ratio Uncertainty

units NoUnits
valid_range 0.0...3.0
format Float_32

Overlying Integrated Attenuated Backscatter 532

units 1/sr
valid_range 0.0...2.0
format Float_32

Layer IAB QA Factor

units NoUnits
valid_range 0.0...1.0
format Float_32

CAD Score

units NoUnits
valid_range 101...105
format Int_8

Feature Classification Flags

units NoUnits
valid_range 1...49146
format Uint_16

Code source

#!/usr/bin/env python

from pyhdf.SD import SD, SDC

import pprint

file_name = 'CAL_LID_L2_01kmCLay-ValStage1-V3-01.2008-01-08T13-55-27ZD.hdf'

file = SD(file_name, SDC.READ)

file_info = file.info()
print file_info

#----------------------------------------------------------------------------------------#
# print SDS names

datasets_dic = file.datasets()

sds_dic = {}
for key, value in datasets_dic.iteritems():
    #print key, value, value[3]
    sds_dic[value[3]] = key

pprint.pprint( sds_dic )

#----------------------------------------------------------------------------------------#
# print SDS info

for i in range(file_info[0]):
    sds_obj = file.select(sds_dic[i])
    sds_info = sds_obj.info()
    print i, ' | ', sds_dic[i], \
             ' | ', sds_info[1] , \
             ' | ', sds_info[2] , \
             ' | ', sds_info[3] , \
             ' | ', sds_info[4]

#----------------------------------------------------------------------------------------#
# print SDS Attributes

for i in range(127):
    sds_obj = file.select(sds_dic[i])
    sds_attributes = sds_obj.attributes()
    attributes = ''
    for key, value in sds_attributes.iteritems():
        attributes = attributes + key + ' ' + str(value) + '\n'
    print i ,  sds_dic[i]
    print attributes

Greetings, I am Ben! I completed my PhD in Atmospheric Science from the University of Lille, France. Subsequently, for 12 years I was employed at NASA as a Research Scientist focusing on Earth remote sensing. Presently, I work with NOAA concentrating on satellite-based Active Fire detection. Python, Machine Learning and Open Science are special areas of interest to me.

Print all CALIOP v3 01kmCLay SDS names and attributes in python 2.7

Profile ID

Latitude

Longitude

Profile Time

Profile UTC Time

Day Night Flag

Off Nadir Angle

Solar Zenith Angle

Solar Azimuth Angle

Scattering Angle

Spacecraft Position

Parallel Column Reflectance 532

Parallel Column Reflectance Uncertainty 532

Perpendicular Column Reflectance 532

Perpendicular Column Reflectance Uncertainty 532

Column Integrated Attenuated Backscatter 532

Column IAB Cumulative Probability

Tropopause Height

Tropopause Temperature

IGBP Surface Type

NSIDC Surface Type

Lidar Surface Elevation

DEM Surface Elevation

Number Layers Found

Layer Top Altitude

Layer Base Altitude

Layer Top Pressure

Midlayer Pressure

Layer Base Pressure

Layer Top Temperature

Midlayer Temperature

Layer Base Temperature

Attenuated Backscatter Statistics 532

Integrated Attenuated Backscatter 532

Integrated Attenuated Backscatter Uncertainty 532

Attenuated Backscatter Statistics 1064

Integrated Attenuated Backscatter 1064

Integrated Attenuated Backscatter Uncertainty 1064

Volume Depolarization Ratio Statistics

Integrated Volume Depolarization Ratio

Integrated Volume Depolarization Ratio Uncertainty

Attenuated Total Color Ratio Statistics

Integrated Attenuated Total Color Ratio

Integrated Attenuated Total Color Ratio Uncertainty

Overlying Integrated Attenuated Backscatter 532

Layer IAB QA Factor

CAD Score

Feature Classification Flags

Benjamin

Skills