Trace gas measurements at Hateruma station in 2018
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The present data set is time series of trace gases (ethane, propane, ozone, NO, NO2, NOy, and CO) and meteorological parameters measured at Hateruma Island, Japan. Hateruma is the southernmost inhabited island in Japan. It is approximately 250 km east of Taiwan and 500 km southwest of Okinawa Island. The prevailing winds at Hateruma are southeastely in summer and northwesterly in winter.
Description
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Creator
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Takuya Saito*1 (
 orcid.org/0000-0001-6055-7263), Shigeru Hashimoto*1, Hitoshi Mukai*2, Hiroshi Tanimoto*1 (orcid.org/0000-0002-5424-9923), Yasunori Tohjima*1, Motoki Sasakawa*1 (orcid.org/0000-0003-2273-5131)*1 Earth System Division, National Institute for Environmental Studies (NIES) *2 Center for Climate Change Adaptation, National Institute for Environmental Studies (NIES) |
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Release date
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2023/02/17
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Temporal coverage
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2018/01/01 - 2018/12/31
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Data provider
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NIES
Email: cgerdb_admin(at)nies.go.jp |
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DOI
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File format
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Data volume
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1.80 MB
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Version
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ver.1.0 (Last updated: 2023/02/17)
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Language
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English
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Data Set
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Parameters
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Ethane, propane, ozone, NO, NO2, NOy, CO, and meteorological parameters
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| Observation period |
From Jan. 1, 2018 (ongoing)
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| Location | 24.0608°N, 123.8093°E |
| Altitude | Elevation: 10.8 m Sampling height: 36.5 m above ground |
| Measurement method |
Measurements of CO, ethane, and propane were made with outside air drawn from a main tower (sampling inlet: 36.5 m above ground and 46.5 m above sea level). CO was measured with a gas chromatograph/reduction gas detector (GC/RGD; Peak Performer 2, Peak Laboratories) (Tohjima et al., 2014). Ethane and propane were measured with an automated preconcentration/gas chromatography/mass spectrometry (GC/MS) instrument (7890B/5977B, Agilent Technologies) designed for hourly measurements of natural and anthropogenic halocarbons (Yokouchi et al., 2006; Saito et al., 2010). Air for NO/NO2/NOy and O3 measurements were drawn from a sub tower (sampling inlet: 14.8 m above ground and 24.8m above sea level). Measurements of NO, NO2, and NOy were made by HSS-100 (Sonoma Technology Inc. (STI)) with a blue light converter for NO2 (NOx converter) and a molybdenum converter for NOy (NOy converter) (Galbally, 2020). Ozone concentration was observed by UV absorption method with an ozone monitor (Dylec 1100, Dylec Co., Ltd).
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| Calculation method |
Ethane and propane measurements were calibrated using a gravimetrically prepared standard gas (Taiyo Nippon Sanso Co. Ltd.). The conversion efficiencies of the converters were daily monitored with NO2 gas (≈5 ppb) generated by a gas dilution system with gas phase titration (NOx: 79±3%, NOy: 98±1%). Detection limit of the NO measurement was about 2 ppt in 1 minute acquisition. The ozone monitor was calibrated with Standard Reference Photometer No. 35 (National Institute for Standard and Technology) located at NIES.
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Keywords
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[Free Keywords]
VOC,SLCP
[GCMD_Platform]
Land-based Platforms > Permanent Land Sites > GROIND STATIONS
[GCMD_Science]
EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC CHEMISTRY > CARBON AND HYDROCARBON COMPOUNDS > ATMOSPHERIC
CARBON MONOXIDE > CARBON MONOXIDE SURFACE EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC CHEMISTRY > CARBON AND HYDROCARBON COMPOUNDS > ETHANE EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC CHEMISTRY > CARBON AND HYDROCARBON COMPOUNDS > NON-METHANE HYDROCARBONS/VOLATILE ORGANIC COMPOUNDS EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC CHEMISTRY > OXYGEN COMPOUNDS > ATMOSPHERIC OZONE > OZONE SURFACE EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC CHEMISTRY > NITROGEN COMPOUNDS > NITROGEN OXIDES EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC CHEMISTRY > NITROGEN COMPOUNDS > NITROGEN DIOXIDE EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC TEMPERATURE > SURFACE TEMPERATURE > AIR TEMPERATURE EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WINDS > SURFACE WINDSWIND DIRECTION EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WATER VAPOR > WATER VAPOR INDICATORS > HUMIDITY > RELATIVE HUMIDITY EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WINDS > SURFACE WINDS > WIND SPEED |
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Update history
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[2023/02/17]
Version 1.0 was released (ver.1.0)
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Reference Information
| References |
Measurement report: Assessment of Asian emissions of ethane, propane, carbon monoxide, and NOx based on observations from the island of Hateruma, doi:10.5194/acp-2022-703.
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Saito T, Hashimoto S, Mukai H, Tanimoto H, Tohjima Y, and Sasakawa M (2023), Trace gas measurements at Hateruma station in 2018, Ver.x.x*1, NIES, DOI:10.17595/20230217.001. (Reference date*2: YYYY/MM/DD)
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