This large vector dataset contains high resolution air pollution mapping of
NO, NO2, O3, CH4, CO2, BC, PN2.5, and UFP concentrations in California
between June 2015 and June 2019.
The dataset consists of measurements collected using four Google Street View
vehicles equipped with the Aclima mobile measurement and data integration
platform from 2015-05-28 to 2019-06-07. Not all four cars were actively
mapping over the entire time frame. Note that there may be gaps in the data
when an individual car was not mapping due to operational, mechanical, or
system difficulties.
Dates of operation for each of the four cars:
Car A: 2016-05-03 - 2019-04-30
Car B: 2016-05-03 - 2018-06-08
Car C: 2015-05-28 - 2019-06-07
Car D: 2015-06-24 - 2018-11-05
Data was collected in several geographic regions of California including the
San Francisco Bay Area, Los Angeles, and the northern San Joaquin Valley.
Mapping occurred in targeted neighborhoods or cities within these regions.
The data set contains a table titled "California_Unified_2015_2019" which
consists of the concentration of the pollutants Ozone (O3), Nitrogen Dioxide
(NO2), Nitrogen Monoxide (NO), Methane (CH4), Carbon Dioxide (CO2),
Black Carbon (BC), particle number less than 2.5 micrometers in size
(PN2.5), and Ultrafine Particles (UFP) measured using four Google Street
View cars equipped with fast time-response, laboratory-grade instruments.
The data was collected at 1-Hz time resolution from 20150528 to 20190607 for
roads in three regions of California - the San Francisco Bay area,
Los Angeles, and the northern San Joaquin Valley. Specific areas mapped
varied by region based on desired spatial data coverage and science
questions. Each data point is geolocated with latitude and longitude as
well as the identity and speed of the car.
For details including methodologies, standards, data providers,
metadata field definitions and descriptions, refer to the
metadata.
Table Schema
Table Schema
Name
Type
Description
BC
DOUBLE
Black carbon concentration
CH4
DOUBLE
Methane dry air mixing ratio
CO2
DOUBLE
Carbon dioxide mixing ratio
Car_Identifier
STRING
Unique identifier for the four vehicles (Car_A/B/C/D)
Car_Speed
DOUBLE
Car speed
Date_Time
STRING
Time in UTC, format YYYY-MM-DD hh:mm:ss
Metadata_Link
STRING
Link to the document
NO
DOUBLE
Nitrogen monoxide mixing ratio
NO2
DOUBLE
Nitrogen dioxide mixing ratio
NO2_Overrange
STRING
Boolean flag indicating the measured value was higher than the
operating range of the instrument's specification. This field can
be empty.
NO_Overrange
STRING
Boolean flag indicating the measured value was higher than the
operating range of the instrument's specification. This field can
be empty.
O3
DOUBLE
Ozone mixing ratio
PN1
DOUBLE
Particle number concentration between 0.3 and 0.5 μm
PN2
DOUBLE
Particle number concentration between 0.5 and 0.7 μm
PN3
DOUBLE
Particle number concentration between 0.7 and 1.0 μm
PN4
DOUBLE
Particle number concentration between 1.0 and 1.5 μm
PN5
DOUBLE
Particle number concentration between 1.5 and 2.5 μm
PN_Overrange
STRING
Boolean flag indicating the measured value was higher than the
operating range of the instrument's specification. This field can
be empty.
UFP
DOUBLE
Total particle number concentration greater than 3 nm
UFP_Overrange
STRING
Boolean flag indicating the measured value was higher than the
operating range of the instrument's specification. This field can
be empty.
This large vector dataset contains high resolution air pollution mapping of NO, NO2, O3, CH4, CO2, BC, PN2.5, and UFP concentrations in California between June 2015 and June 2019. The dataset consists of measurements collected using four Google Street View vehicles equipped with the Aclima mobile measurement and data integration …
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],[],[[["\u003cp\u003eThis dataset provides high-resolution air pollution data for California, including NO, NO2, O3, CH4, CO2, BC, PN2.5, and UFP concentrations.\u003c/p\u003e\n"],["\u003cp\u003eData was collected from 2015 to 2019 using four Google Street View cars equipped with Aclima's mobile measurement platform.\u003c/p\u003e\n"],["\u003cp\u003eThe dataset covers regions in California including the San Francisco Bay Area, Los Angeles, and the northern San Joaquin Valley.\u003c/p\u003e\n"],["\u003cp\u003eMeasurements were taken at 1-Hz time resolution and include geolocation data (latitude, longitude) along with car speed and identifier.\u003c/p\u003e\n"],["\u003cp\u003eThe dataset is available under a CC-BY-NC-4.0 license and requires attribution to Google and Aclima.\u003c/p\u003e\n"]]],["The dataset provides air pollution data for California from May 2015 to June 2019, gathered by four Google Street View vehicles. These vehicles measured concentrations of NO, NO2, O3, CH4, CO2, BC, PN2.5, and UFP in regions like the San Francisco Bay Area and Los Angeles. Data points are geolocated and include car identity and speed. The table schema, available for use in earth engine, includes the concentration of pollutants and details like date, time, and car identifier.\n"],null,["# Google Street View Air Quality: High Resolution Air Pollution Mapping in California\n\nDataset Availability\n: 2015-05-28T00:00:00Z--2019-06-07T00:00:00Z\n\nDataset Provider\n:\n\n\n [Google / Aclima](https://medium.com/google-earth/powering-new-research-with-hyperlocal-air-pollution-data-c9947359e87e)\n\nTags\n:\n[air-quality](/earth-engine/datasets/tags/air-quality) [atmosphere](/earth-engine/datasets/tags/atmosphere) [nitrogen-dioxide](/earth-engine/datasets/tags/nitrogen-dioxide) [pollution](/earth-engine/datasets/tags/pollution) [table](/earth-engine/datasets/tags/table) \n\n#### Description\n\nThis large vector dataset contains high resolution air pollution mapping of\nNO, NO2, O3, CH4, CO2, BC, PN2.5, and UFP concentrations in California\nbetween June 2015 and June 2019.\n\nThe dataset consists of measurements collected using four Google Street View\nvehicles equipped with the Aclima mobile measurement and data integration\nplatform from 2015-05-28 to 2019-06-07. Not all four cars were actively\nmapping over the entire time frame. Note that there may be gaps in the data\nwhen an individual car was not mapping due to operational, mechanical, or\nsystem difficulties.\n\nDates of operation for each of the four cars:\n\n- Car A: 2016-05-03 - 2019-04-30\n- Car B: 2016-05-03 - 2018-06-08\n- Car C: 2015-05-28 - 2019-06-07\n- Car D: 2015-06-24 - 2018-11-05\n\nData was collected in several geographic regions of California including the\nSan Francisco Bay Area, Los Angeles, and the northern San Joaquin Valley.\nMapping occurred in targeted neighborhoods or cities within these regions.\nThe data set contains a table titled \"California_Unified_2015_2019\" which\nconsists of the concentration of the pollutants Ozone (O3), Nitrogen Dioxide\n(NO2), Nitrogen Monoxide (NO), Methane (CH4), Carbon Dioxide (CO2),\nBlack Carbon (BC), particle number less than 2.5 micrometers in size\n(PN2.5), and Ultrafine Particles (UFP) measured using four Google Street\nView cars equipped with fast time-response, laboratory-grade instruments.\nThe data was collected at 1-Hz time resolution from 20150528 to 20190607 for\nroads in three regions of California - the San Francisco Bay area,\nLos Angeles, and the northern San Joaquin Valley. Specific areas mapped\nvaried by region based on desired spatial data coverage and science\nquestions. Each data point is geolocated with latitude and longitude as\nwell as the identity and speed of the car.\n\nFor details including methodologies, standards, data providers,\nmetadata field definitions and descriptions, refer to the\n[metadata](https://docs.google.com/document/d/1If15JccoJcN01Jg3ljN3V-qUFS0HywKAd4OsQ-_JXJo/view).\n\n### Table Schema\n\n**Table Schema**\n\n| Name | Type | Description |\n|----------------|--------|--------------------------------------------------------------------------------------------------------------------------------------------|\n| BC | DOUBLE | Black carbon concentration |\n| CH4 | DOUBLE | Methane dry air mixing ratio |\n| CO2 | DOUBLE | Carbon dioxide mixing ratio |\n| Car_Identifier | STRING | Unique identifier for the four vehicles (Car_A/B/C/D) |\n| Car_Speed | DOUBLE | Car speed |\n| Date_Time | STRING | Time in UTC, format YYYY-MM-DD hh:mm:ss |\n| Metadata_Link | STRING | Link to the document |\n| NO | DOUBLE | Nitrogen monoxide mixing ratio |\n| NO2 | DOUBLE | Nitrogen dioxide mixing ratio |\n| NO2_Overrange | STRING | Boolean flag indicating the measured value was higher than the operating range of the instrument's specification. This field can be empty. |\n| NO_Overrange | STRING | Boolean flag indicating the measured value was higher than the operating range of the instrument's specification. This field can be empty. |\n| O3 | DOUBLE | Ozone mixing ratio |\n| PN1 | DOUBLE | Particle number concentration between 0.3 and 0.5 μm |\n| PN2 | DOUBLE | Particle number concentration between 0.5 and 0.7 μm |\n| PN3 | DOUBLE | Particle number concentration between 0.7 and 1.0 μm |\n| PN4 | DOUBLE | Particle number concentration between 1.0 and 1.5 μm |\n| PN5 | DOUBLE | Particle number concentration between 1.5 and 2.5 μm |\n| PN_Overrange | STRING | Boolean flag indicating the measured value was higher than the operating range of the instrument's specification. This field can be empty. |\n| UFP | DOUBLE | Total particle number concentration greater than 3 nm |\n| UFP_Overrange | STRING | Boolean flag indicating the measured value was higher than the operating range of the instrument's specification. This field can be empty. |\n\n### Terms of Use\n\n**Terms of Use**\n\n[CC-BY-NC-4.0](https://spdx.org/licenses/CC-BY-NC-4.0.html)\n\n### Citations\n\nCitations:\n\n- with the text \"Air Quality Data from Google and Aclima\"\n\n Citation for publications: Google and Aclima 2019: Project Air View California 2015-2019\n\n### Explore with Earth Engine\n\n| **Important:** Earth Engine is a platform for petabyte-scale scientific analysis and visualization of geospatial datasets, both for public benefit and for business and government users. Earth Engine is free to use for research, education, and nonprofit use. To get started, please [register for Earth Engine access.](https://console.cloud.google.com/earth-engine)\n\n### Code Editor (JavaScript)\n\n```javascript\nvar fc = ee.FeatureCollection('GOOGLE/AirView/California_Unified_2015_2019');\n\nvar normal = fc.filter('NO2 \u003e= 0 && NO2 \u003c 1');\nvar mild = fc.filter('NO2 \u003e= 1 && NO2 \u003c 2');\nvar strong = fc.filter('NO2 \u003e= 2');\n\nMap.addLayer(normal, {color: 'green'}, 'NO2 [0; 1)');\nMap.addLayer(mild, {color: 'yellow'}, 'NO2 [1; 2)');\nMap.addLayer(strong, {color: 'red'}, 'NO2 \u003e= 2');\nMap.setCenter(-122.827746, 38.4001353, 20);\nMap.setOptions('SATELLITE');\n```\n[Open in Code Editor](https://code.earthengine.google.com/?scriptPath=Examples:Datasets/GOOGLE/GOOGLE_AirView_California_Unified_2015_2019) \n[Google Street View Air Quality: High Resolution Air Pollution Mapping in California](/earth-engine/datasets/catalog/GOOGLE_AirView_California_Unified_2015_2019) \nThis large vector dataset contains high resolution air pollution mapping of NO, NO2, O3, CH4, CO2, BC, PN2.5, and UFP concentrations in California between June 2015 and June 2019. The dataset consists of measurements collected using four Google Street View vehicles equipped with the Aclima mobile measurement and data integration ... \nGOOGLE/AirView/California_Unified_2015_2019, air-quality,atmosphere,nitrogen-dioxide,pollution,table \n2015-05-28T00:00:00Z/2019-06-07T00:00:00Z \n-90 -180 90 180 \nGoogle Earth Engine \nhttps://developers.google.com/earth-engine/datasets\n\n- [](https://doi.org/https://medium.com/google-earth/powering-new-research-with-hyperlocal-air-pollution-data-c9947359e87e)\n- [](https://doi.org/https://developers.google.com/earth-engine/datasets/catalog/GOOGLE_AirView_California_Unified_2015_2019)"]]
