Dataset
TRANSITION Clean Air Network: Exposures to particles and volatile organic compounds across multiple transportation modes
Abstract
This dataset contains volatile organic compounds (VOC) and ultrafine particle measurements collected onboard several vehicles for the TRANSITION Clean air Network during May 2021 in the London and surrounding area.
The particles measured include VOCs captured in the field using thermal desorption tubes, and then analysed into the component species using highly sensitive Markes International GCxGC-TOF-MS system, and ultrafines data captured using a V2000 sensor from National Air Quality Testing Services by Emissions Analytics. Therefore, a much wider range of pollutants have been tested than in standard air quality monitoring.
The harm caused by emissions from vehicles to air quality and the health of humans outside is increasing well understood and It is generally accepted that it is a policy priority to remove high-emitting vehicles from the road and to swap for low-emission vehicles or public transport. What is less well understood is the exposure of the occupants in various transportation modes. Aggregate time spent in vehicles is significant, and can be measured in hours per day for certain commuters and professional drivers. Existing research by Emissions Analytics shows that the worst-performing cars can have particle number concentrations more than three times than in the ambient air. With Net Zero, particles are likely to be the dominant traffic pollutant.
This dataset contains interior air quality measurements made on a range of modes of transport including diesel and electric trains, the London Underground, diesel and electric buses, and old and new cars, including a battery electric.
Details
| Previous Info: |
No news update for this record
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| Previously used record identifiers: |
No related previous identifiers.
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| Access rules: |
Public data: access to these data is available to both registered and non-registered users.
Use of these data is covered by the following licence(s): http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/ When using these data you must cite them correctly using the citation given on the CEDA Data Catalogue record. |
| Data lineage: |
VOC data was captured in the field using thermal desorption tubes, which were then analysed by Emissions Analytics on a Markes International GCxGC-TOF-MS system. The data was delivered to CEDA from Emissions Analytics. |
| Data Quality: |
Test methods internally developed at Emissions Analytics, validated by Markes Inter national. Data as supplied by the project team
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| File Format: |
Data are BADC-CSV formatted.
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Related Documents
| TRANSITION project webpage |
Process overview
Instrument/Platform pairings
| Emission Analytics- GCxGC-TOF-MS | Deployed on: Clear Air Network - Transition VOCs sites |
| NAQTS - V2000 | Deployed on: Clear Air Network - Transition VOCs sites |
| Output Description | TRANSITION Clean Air Network VOCs and particluates |
- var_id: 35
- units: G
- long_name: Accel X
- var_id: 36
- units: G
- long_name: Accel Y
- var_id: 37
- long_name: Accel Z
- units: G
- units: metres
- long_name: Altitude
- var_id: 82
- units: degrees Celsius
- var_id: 9
- long_name: Ambient dewpoint
- units: kPa
- long_name: Ambient pressure
- var_id: 7
- units: %
- var_id: 8
- long_name: Ambient relative humidity
- units: degrees Celsius
- var_id: 6
- long_name: Ambient temperature
- units: #/cm3
- var_id: 64
- long_name: CPC Concentration
- var_id: 62
- long_name: CPC Counts
- units: #/s
- units: Pa
- var_id: 56
- long_name: CPC Differential Pressure
- var_id: 68
- units: ignore
- long_name: CPC Error
- var_id: 59
- units: litres per minute
- long_name: CPC Exhaust Flow
- units: kPa
- var_id: 58
- long_name: CPC Exhaust Pressure
- var_id: 54
- units: ignore
- long_name: CPC Pump PWM
- units: kPa
- var_id: 55
- long_name: CPC Pump Pressure
- var_id: 57
- long_name: CPC Sample Flow
- units: cubic centimetres per minute
- var_id: 67
- long_name: CPC Status
- units: ignore
- units: degrees Celsius
- var_id: 96
- long_name: CPU Temperature
- units: %
- var_id: 97
- long_name: CPU Usage
- var_id: 8
- units: string
- long_name: Chemical formula
- var_id: 63
- units: ignore
- long_name: Coincidence Factor
- units: V
- var_id: 61
- long_name: Comp. Voltage
- var_id: 3
- units: string
- long_name: Compound name
- units: degrees Celsius
- var_id: 48
- long_name: Cond. Temperature
- units: degrees Celsius
- var_id: 88
- long_name: Coolant Temperature
- units: Pa
- var_id: 69
- long_name: Diluter Differential Pressure
- var_id: 74
- units: value
- long_name: Diluter Dilution Ratio
- var_id: 73
- units: litres per minute
- long_name: Diluter Main Flow
- var_id: 71
- units: ignore
- long_name: Diluter Pump PWM
- units: kPa
- var_id: 72
- long_name: Diluter Pump Pressure
- var_id: 70
- units: cubic centimetres per minute
- long_name: Diluter Sample Flow
- units: %
- var_id: 98
- long_name: Disk Usage
- var_id: 81
- units: string
- long_name: East/West
- units: mV
- var_id: 22
- long_name: Electrochemical CO
- units: ppm
- var_id: 29
- long_name: Electrochemical CO (ppm)
- units: mV
- var_id: 20
- long_name: Electrochemical NO
- units: mV
- var_id: 21
- long_name: Electrochemical NO2
- units: degrees Celsius
- var_id: 17
- long_name: Electrochemical Temperature
- var_id: 15
- long_name: Estimated mass based on toluene equivalence
- units: ng
- var_id: 66
- units: ignore
- long_name: Exterior Tank Level
- units: degrees Celsius
- var_id: 52
- long_name: Extract Temperature
- var_id: 13
- long_name: Functional group
- units: string
- var_id: 78
- units: string
- long_name: GPS Quality
- var_id: 79
- units: value
- long_name: GPS Satellites
- var_id: 83
- units: miles per hour
- long_name: GPS Speed
- var_id: 75
- units: string
- long_name: GPS Status
- var_id: 84
- long_name: GPS Time
- units: DD/MM/YYYY HH:MM:SS
- var_id: 3
- units: ignore
- long_name: Gas Only
- units: %
- var_id: 19
- long_name: Gas Relative Humidity
- var_id: 5
- units: ignore
- long_name: Geofence
- units: degrees per second
- var_id: 38
- long_name: Gyro X
- units: degrees per second
- var_id: 39
- long_name: Gyro Y
- units: degrees per second
- var_id: 40
- long_name: Gyro Z
- units: degrees Celsius
- var_id: 49
- long_name: Heatsink Temperature
- long_name: Height
- var_id: 12
- units: mV/minute
- units: V
- var_id: 16
- long_name: Input Voltage
- units: degrees Celsius
- var_id: 89
- long_name: Intake Air Temperature
- var_id: 65
- units: ignore
- long_name: Intertior Tank Level
- long_name: Latitude
- var_id: 76
- units: coordinates
- units: seconds
- var_id: 5
- long_name: Library Retention Index
- var_id: 4
- units: ignore
- long_name: Lockout
- long_name: Longitude
- var_id: 77
- units: coordinates
- units: #/cm3
- var_id: 10
- long_name: Loss Corrected Inlet Concentration
- var_id: 92
- units: value
- long_name: Loss Correction Factor
- units: ppm
- var_id: 30
- long_name: MOx CO #1
- units: ppm
- var_id: 31
- long_name: MOx CO #2
- units: ppm
- var_id: 32
- long_name: MOx NO2 #1
- units: mV
- var_id: 26
- long_name: MOx NO2 #2
- units: degrees Celsius
- var_id: 18
- long_name: MOx Temperature
- units: degrees Celsius
- var_id: 50
- long_name: Main Block Temperature
- var_id: 90
- long_name: Mass Air Flow
- units: pounds per minute
- var_id: 6
- long_name: Match Factor
- units: value
- units: degrees Celsius
- var_id: 13
- long_name: NDIR Temperature
- units: dB
- long_name: Noise
- var_id: 34
- var_id: 80
- units: string
- long_name: North/South
- var_id: 87
- long_name: OBD Speed
- units: miles per hour
- var_id: 85
- units: string
- long_name: OBD Status
- var_id: 12
- long_name: PM 10
- units: micrograms/m3
- var_id: 11
- units: micrograms/m3
- long_name: PM 2.5
- var_id: 11
- long_name: Peak area
- units: mV.minute
- var_id: 1
- units: string
- long_name: Peak identification
- units: V
- var_id: 60
- long_name: Photo. Voltage
- var_id: 86
- long_name: RPM
- units: revolution per minute
- units: ppm
- var_id: 14
- long_name: Raw CO2 #1
- units: ppm
- var_id: 15
- long_name: Raw CO2 #2
- units: degrees Celsius
- var_id: 53
- long_name: Recovery Temperature
- var_id: 93
- units: litres per minute
- long_name: Ref. Flow
- units: kPa
- var_id: 95
- long_name: Ref. Flow Pressure
- units: degrees Celsius
- var_id: 94
- long_name: Ref. Flow Temperature
- var_id: 7
- units: value
- long_name: Relative Match Factor
- var_id: 9
- units: value
- long_name: Retention Index
- units: minutes
- var_id: 10
- long_name: Retention Time
- units: seconds
- long_name: Seconds
- var_id: 1
- units: %
- var_id: 14
- long_name: Share of total peak area on chromatogram
- var_id: 41
- units: ignore
- long_name: Sol. 1 State
- var_id: 42
- units: ignore
- long_name: Sol. 2 State
- var_id: 43
- units: ignore
- long_name: Sol. 3 State
- var_id: 44
- units: ignore
- long_name: Sol. 4 State
- var_id: 2
- units: string
- long_name: Source
- var_id: 4
- units: string
- long_name: Synonyms
- var_id: 2
- units: DD/MM/YYYY HH:MM:SS
- long_name: System Time
- units: degrees Celsius
- var_id: 51
- long_name: Tank Temperature
- units: Pa
- var_id: 45
- long_name: Thermal Desorption Differential Pressure
- var_id: 46
- units: litres per minute
- long_name: Thermal Desorption Flow
- var_id: 47
- long_name: Thermal Desorption Integrated Flow
- units: litres per minute
- units: #/cm3
- var_id: 91
- long_name: Uncorrected Inlet Concentration
Co-ordinate Variables
Temporal Range
2021-05-17T00:00:00
2021-05-25T23:59:59
Geographic Extent
51.7500° |
||
-1.2700° |
0.1400° |
|
51.6000° |