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Hourly monitoring data of air quality and meteorology at Atmospheric Measurement and Experiment Laboratory of National Institute for Environmental Studies in Tsukuba, Japan

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Continuous hourly monitoring data of air quality and meteorology at Atmospheric Measurement and Experiment Laboratory (Air Quality Research Station) of National Institute for Environmental Studies in Tsukuba, Japan from 1995 to 2022. This facility was established to evaluate the accuracy and stability of automatic measurement instruments for air quality and meteorology, to make intercomparisons, and to study interfering factors. The air quality components include sulfur dioxide (SO2), nitric oxide (NO), nitrogen dioxide (NO2), ozone (O3), methane (CH4), non-methane hydrocarbons (NMHC), suspended particulate matter (SPM), and fine particulate matter (PM2.5). The meteorological elements include wind direction, wind speed, temperature, relative humidity (RH), pressure, solar radiation, ultraviolet-A radiation (UV-A), and precipitation.

Description

Creator
Release date
2025/04/18
Temporal coverage
1995/01/01 - 2022/12/31
Data provider
NIES
Email: cgerdb_admin(at)nies.go.jp
DOI
File format
Data volume
31.7 MB
Version
ver.1.0 (Last updated: 2025/04/18)
Language
English

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Data Set

Parameters
SO2, NO, NO2, O3, CH4, NMHC, SPM, PM2.5, Wind direction, Wind speed, Temperature, RH, Pressure, Solar radiation, UV-A, Precipitation
Time resolution
1 hour
Observation period
From Jan. 1st, 1978 (ongoing)
Location
36.0484°N, 140.1201°E
Altitude
Elevation: 23.5 m;
Sampling height (above ground):
  • [SO2, NO, NO2, O3, CH4, NMHC] 5.1 m
  • [SPM] 5.0 m
  • [PM2.5] 3.0 m
  • [Wind direction, Wind speed] 15 m
  • [Temperature, RH, Pressure] 2.1 m
  • [Solar radiation, UV-A] 4.8 m
  • [Precipitation] 4.2 m
Measurement method
  • SO2: DKK, GFS-32 (1998-, UV fluorescence method), DKK-TOA, GFS-352 (April 2007-, UV absorption method), Thermo Fisher Scientific, 43i-TLE (April 2016-, UV absorption method).
  • NO, NO2: DKK, GLN-32 (1995-), DKK-TOA, GLN-254 (August 2002-), Thermo Fisher Scientific, 42i-TL (April 2016-). Chemiluminescence method.
  • O3: Dylec, 1006AHJ (1995-), Dylec, 1150 (April 2004-), Kimoto Electric, OA-787 (April 2016-). UV absorption method.
  • CH4, NMHC: Yanaco, AG-203 (1995-), DKK-TOA, GHC-255 (January 2016-). GC/FID method.
  • SPM: SIBATA, BAM-102S (1996-), DKK-TOA, DUB-357 (January 2006-), Kimoto Electric, PM-711 (April 2016-). β-ray absorption method.
  • PM2.5: Thermo Scientific, TEOM (April 2013-). Tapered Element Oscillating Microbalance method. Kimoto Electric, PM-712 (January 2016-). β-ray absorption method (instrument that has passed equivalency assessment by Ministry of the Environment).
  • Wind direction, Wind speed: KAIJO, SA-200 (probe: TJ-51). Ultrasonic method.
  • Temperature: Ogasawara, HMP-14U (1995-), ANEOS, JS-157 (12 January 2015-). Platinum thermometer method.
  • RH: Ogasawara, HMP-14U (1995-), Ogasawara, HMP-223L (12 January 2015-). Capacitive type.
  • Pressure: Yokogawa Electric, INSXJ6226. Aneroid type.
  • Solar radiation: EKO Instruments, MS-42. Wavelength range (300-2800 nm)
  • UV-A: Ogasawara, SR-900 (1995-), EKO Instruments, MS-210A. Wavelength range (300-400 nm).
  • Precipitation: Ogasawara, RS-102 (1995-), Komatsu Factory Co. Ltd., R1-502. Tumbling box (0.5 mm unit).
Calculation method
  • SO2, NO, NO2, O3, CH4, NMHC: 1-hour average of instantaneous values.
  • SPM: 1-hour average.
  • PM2.5: 1-hour average.
  • Wind direction: 10-minute moving average. The value of 0: Calm (wind speed <0.4 m/s).
  • Wind speed: 10-minute moving average.
  • Temperature, RH, Pressure: instantaneous values.
  • Solar radiation, UV-A: 1-hour integrated value of instantaneous value.
  • Precipitation: 1-hour integrated value.
*Analog signals were input to a data logger (DKK, RDL-30, 32) and converted to numerical values. Digital data was used as-is.
Keywords
[Free keywords]
monitoring, air quality, meteorology, PM2.5, Tsukuba, Ibaraki, air pollutants, National Institute for Environmental Studies, Air Quality Research Station, Continuous monitoring
[GCMD_Platform]
Land-based Platforms > Permanent Land Sites > GROUND STATIONS
[GCMD_Science]
ATMOSPHERE > AIR QUALITY > PARTICULATE MATTER (PM 2.5)
ATMOSPHERE > AIR QUALITY > NITROGEN OXIDE
ATMOSPHERE > AIR QUALITY > SULFUR OXIDES
ATMOSPHERE > AIR QUALITY > TROPOSPHERIC OZONE
ATMOSPHERE > AIR QUALITY > VOLATILE ORGANIC COMPOUNDS
ATMOSPHERE > ATMOSPHERIC TEMPERATURE
ATMOSPHERE > ATMOSPHERIC RADIATION
ATMOSPHERE > ATMOSPHERIC WINDS
ATMOSPHERE > PRECIPITATION ATMOSPHERE > ATMOSPHERIC PRESSURE
Update history
[2025/04/18]
Ver1.0 was released

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Contributors

Project manager
Data manager

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Acknowledgements

Acknowledgements
Other contributors: Dr. Takashi Imamura, Dr. Akinori Takami, Dr. Hideki Nara, Dr. Masahide Aikawa, Dr. Shunji Hashimoto, Dr. Yuji Fujitani, Dr. Hitoshi Mukai, Dr. Hiroshi Tanimoto, Dr. Kiyoshi Tanabe, Dr. Yukio Terao, Dr. Tomoaki Nishizawa, Dr. Yoshitaka Jin, Dr. Masahide Nishihashi, Dr. Mirai Watanabe, Dr. Katsuyuki Takahashi, Dr. Shuichi Hasegawa, Dr.Sumito Matoba, Dr.Ikuko Mori, Dr. Tomoko Shirai, Dr. Yousuke Yamashita, Ms. Satoko Hirano, Ms. Keiko Higo, Mr. Shigeru Hashimoto, Ms. Toshiko Miyajima, Ms. Chisato Wada, Mr. Yasuhiro Tsukada, Mr. Haoran Zhang, and Ms. Lai Xiang of NIES (at the time of observation or data release). Green Blue Co., Ltd (Mr. Toyohiko Kanari et al.), GSK Ibaraki Co., Ltd. (Mr. Yukio Ueno et al.), Toa-DKK Co., Ltd. (Mr. Koji Tabuchi et al.).

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Reference Information

Site name
Atmospheric Measurement and Experiment Laboratory (Air Quality Research Station)
Site address
16-2 Onogawa, Tsukuba, Ibaraki 305-8506 Japan
References
Tsukuba Air Quality Monitoring Data, https://www.nies.go.jp/aqrs/index.html.

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License
Citation format
When this data set is referred to in publications, it should be cited in the following format.
Fushimi et al. (2025), Hourly monitoring data of air quality and meteorology at Atmospheric Measurement and Experiment Laboratory of National Institute for Environmental Studies in Tsukuba, Japan, ver.x.x *1, NIES, DOI:10.17595/20250418.001. (Reference date*2: YYYY/MM/DD)
*1 The version number is indicated in the name of each data file.
*2 As the reference date, please indicate the date you downloaded the files.

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