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Commit 1b49ba8f authored by Paul Eckhardt's avatar Paul Eckhardt
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ADD examples for finding variables by characteristics

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Yttri, Karl Espen; Someone, Else
NO01L, Norwegian Institute for Air Research, NILU, , Instituttveien 18, , 2007, Kjeller, Norway
Hjellbrekke, Anne
EMEP GAW-WDCA
1 1
2018 01 01 2020 10 15
0.166667
days from file reference point
17
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
9.999999 9999.99 9999.99 9.999 9.999 9.999 9.999 9.999 9.999 9.999 9.999 9.999 9.999 9.999 99.999 9.999 9.999
end_time of measurement, days from the file reference point
pressure, hPa
temperature, K
elemental_carbon, ug C/m3, Detection limit=0.4 ug C/m3
elemental_carbon, ug C/m3, Statistics=uncertainty
organic_carbon, ug C/m3, Detection limit=0.4 ug C/m3
organic_carbon, ug C/m3, Statistics=uncertainty
organic_carbon, ug C/m3, Artifact=positive
organic_carbon, ug C/m3, Artifact=positive, Statistics=uncertainty
organic_carbon, ug C/m3, Fraction=OC1
organic_carbon, ug C/m3, Fraction=OC2
organic_carbon, ug C/m3, Fraction=OC3
organic_carbon, ug C/m3, Fraction=OC4
organic_carbon, ug C/m3, Fraction=OCPyr
total_carbon, ug C/m3, Detection limit=0.4 ug C/m3
total_carbon, ug C/m3, Statistics=uncertainty
numflag, no unit
0
70
Data definition: EBAS_1.1
Set type code: TU
Timezone: UTC
File name: NO0002R.20180101000000.20201015093000.online_thermal-optical_analysis.oc_ec_tc.pm25.1y.4h.NO01L_NILU_sunset_mod4_Bir.NO01L_thermal-optical_analysis_EUSAAR_2.lev2.nas
Startdate: 20180101000000
Revision date: 20201015093000
Version: 1
Version description: initial revision, manually inspected
Statistics: arithmetic mean
Data level: 2
Period code: 1y
Resolution code: 4h
Sample duration: 225mn
Orig. time res.: 4h
Station code: NO0002R
Platform code: NO0002S
Station name: Birkenes II
Station WDCA-ID: GAWANO__BIR
Station GAW-ID: BIR
Station GAW-Name: Birkenes Atmospheric Observatory
Station land use: Forest
Station setting: Rural
Station GAW type: R
Station WMO region: 6
Station latitude: 58.38853
Station longitude: 8.252
Station altitude: 219.0 m
Measurement latitude: 58.2318
Measurement longitude: 8.1507
Measurement altitude: 212.0 m
Measurement height: 4.0 m
Regime: IMG
Component: oc_ec_tc
Unit: ug C/m3
Matrix: pm25
Laboratory code: NO01L
Instrument type: online_thermal-optical_analysis
Instrument name: NILU_sunset_mod4_Bir
Instrument manufacturer: Sunset Laboratory
Instrument model: Model-4 Semi-Continuous Field Analyzer
Instrument serial number: 9635
Method ref: NO01L_thermal-optical_analysis_EUSAAR_2
Standard method: TEMP=EUSAAR_2
Inlet type: Cyclone
Inlet description: with rain hat
Flow rate: 8.0 l/min
Filter face velocity: 108.4 cm/s
Exposed filter area: 1.23 cm2
Filter description: Circular 16.5 mm diameter punches cut from WhatmanQM-A47mm
Medium: Quartz
Filter prefiring: Prefired by previous analysis
Filter conditioning: None
Sample preparation: None
Blank correction: Not blank corrected
Artifact correction: Positive only
Artifact correction description: The positive artifact of OC was accounted for by placing a denuder upstream of the instrument. The denuder collection efficiency is 91 %. The remaining positive artifact due to the inefficiency is reported in a separate variable (Artifact=positive).
Charring correction: By laser transmission
Humidity/temperature control: None
Volume std. temperature: ambient
Volume std. pressure: ambient
Detection limit expl.: Determined by taking 3 times standard deviation of ensemble of field blanks
Measurement uncertainty expl.: Measurement uncertainty includes quantifiable uncertainty
Zero/negative values code: Zero/negative possible
Zero/negative values: Zero/negative values reported as measured if within detection limit, flagged with 780
Originator: Yttri, Karl Espen, key@nilu.no, Norwegian Institute for Air Research, NILU, Atmosphere and Climate Department, Instituttveien 18, , 2007, Kjeller, Norway
Originator: Someone, Else, Someone@somewhere.no, Some nice Institute, WOW, Super interesting division, Street 18, , X-9999, Paradise, Noway
Submitter: Hjellbrekke, Anne, agh@nilu.no, Norwegian Institute for Air Research, NILU, Atmosphere and Climate Department, Instituttveien 18, , 2007, Kjeller, Norway
Acknowledgement: Request acknowledgement details from data originator
Comment:
starttime endtime press temp EC EC_unc OC OC_unc OC_pos OC_unc_pos OC_peak1 OC_peak2 OC_peak3 OC_peak4 OC_Pyr TC TC_unc flag
0.000000 0.156250 997.21 251.71 0.066 0.006 0.306 0.076 0.028 0.003 0.038 0.059 0.068 0.049 0.092 0.372 0.079 0.000
0.166667 0.322917 997.73 250.23 0.150 0.014 0.923 0.126 0.083 0.008 0.097 0.132 0.076 0.080 0.535 1.073 0.136 0.000
0.333333 0.489583 998.43 249.88 0.086 0.008 0.430 0.100 0.039 0.004 0.063 0.080 0.073 0.059 0.156 0.516 0.103 0.000
0.500000 0.656250 998.62 249.21 0.175 0.017 0.419 0.099 0.038 0.004 0.042 0.059 0.076 0.066 0.174 0.594 0.107 0.000
0.666667 0.822917 9999.99 9999.99 9.999 9.999 9.999 9.999 9.999 9.999 9.999 9.999 9.999 9.999 9.999 99.999 9.999 0.999
......@@ -133,6 +133,29 @@ def use_file_example(nas, time):
print(('\n found variable ozone, ug/m3: '
'var_index={}'.format(i)))
# ec/oc find variable witth Fraction=OC2
for i in nas.find_variables({
'comp_name': 'organic_carbon',
'characteristics': {'Fraction': 'OC2'}}):
print(('\n found variable organic_carbon, Fraction=OC2: '
'var_index={}'.format(i)))
# ec/oc find all variable where characteristics Fraction is set
# (no matter which value)
for i in nas.find_variables({
'comp_name': 'organic_carbon',
'characteristics': {'Fraction': True}}):
print(('\n found variable organic_carbon, with any Fraction: '
'var_index={}'.format(i)))
# ec/oc find variable organic_carbon, arithmetic mean, without a characteristic
# Fraction or Artifact specified
for i in nas.find_variables({
'comp_name': 'organic_carbon',
'statistics': 'arithmetic mean',
'characteristics': {'Fraction': False, 'Artifact': False}}):
print(('\n found variable organic_carbon, arithmetic mean, without '
'any Fraction or Artifact: var_index={}'.format(i)))
EbasCommandline(
ebas_read_example,
custom_args=['CONFIG', 'LOGGING', 'TIME_CRIT', 'NASA_READ'],
......
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