Google Street View Air Quality: High Resolution Air Pollution Mapping in California

Dataset Availability

2015-05-28T00:00:00Z–2019-06-07T00:00:00Z

Dataset Provider

Google / Aclima

Earth Engine Snippet

ee.FeatureCollection("GOOGLE/AirView/California_Unified_2015_2019")

Tags

air-quality atmosphere nitrogen-dioxide pollution table

Description

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.

Terms of Use

Terms of Use

CC-BY-NC-4.0

Citations

Citations:

• with the text "Air Quality Data from Google and Aclima"

  Citation for publications: Google and Aclima 2019: Project Air View California 2015-2019

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Code Editor (JavaScript)

var fc = ee.FeatureCollection('GOOGLE/AirView/California_Unified_2015_2019');

var normal = fc.filter('NO2 >= 0 && NO2 < 1');
var mild = fc.filter('NO2 >= 1 && NO2 < 2');
var strong = fc.filter('NO2 >= 2');

Map.addLayer(normal, {color: 'green'}, 'NO2 [0; 1)');
Map.addLayer(mild, {color: 'yellow'}, 'NO2 [1; 2)');
Map.addLayer(strong, {color: 'red'}, 'NO2 >= 2');
Map.setCenter(-122.827746, 38.4001353, 20);
Map.setOptions('SATELLITE');

Open in Code Editor

Google Street View Air Quality: High Resolution Air Pollution Mapping in California

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 …

GOOGLE/AirView/California_Unified_2015_2019, air-quality,atmosphere,nitrogen-dioxide,pollution,table

2015-05-28T00:00:00Z/2019-06-07T00:00:00Z

-90 -180 90 180

Google Earth Engine

https://developers.google.com/earth-engine/datasets