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

GOOGLE/AirView/California_Unified_2015_2019
Dataset Availability
2015-05-28T00:00:00Z–2019-06-07T00:00:00Z
Dataset Provider
Earth Engine Snippet
ee.FeatureCollection("GOOGLE/AirView/California_Unified_2015_2019")
Tags
air-quality 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

Explore with Earth Engine

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
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,nitrogen-dioxide,pollution,table
2015-05-28T00:00:00Z/2019-06-07T00:00:00Z
Google Earth Engine