{"id":"eclipse","type":"Collection","links":[{"rel":"items","type":"application/geo+json","href":"https://planetarycomputer.microsoft.com/api/stac/v1/collections/eclipse/items"},{"rel":"parent","type":"application/json","href":"https://planetarycomputer.microsoft.com/api/stac/v1/"},{"rel":"root","type":"application/json","href":"https://planetarycomputer.microsoft.com/api/stac/v1/"},{"rel":"self","type":"application/json","href":"https://planetarycomputer.microsoft.com/api/stac/v1/collections/eclipse"},{"rel":"license","href":"https://ai4edatasetspublicassets.blob.core.windows.net/assets/aod_docs/Microsoft%20Project%20Eclipse%20API%20Terms%20of%20Use_Mar%202022.pdf","type":"application/pdf","title":"Terms of use"},{"rel":"cite-as","href":"https://www.microsoft.com/en-us/research/uploads/prod/2022/05/ACM_2022-IPSN_FINAL_Eclipse.pdf","type":"application/pdf","title":"Eclipse: An End-to-End Platform for Low-Cost, Hyperlocal Environment Sensing in Cities"},{"rel":"http://www.opengis.net/def/rel/ogc/1.0/queryables","type":"application/schema+json","title":"Queryables","href":"https://planetarycomputer.microsoft.com/api/stac/v1/collections/eclipse/queryables"},{"rel":"describedby","href":"https://planetarycomputer.microsoft.com/dataset/eclipse","title":"Human readable dataset overview and reference","type":"text/html"}],"title":"Urban Innovation Eclipse Sensor Data","assets":{"data":{"href":"abfs://eclipse/Chicago/","type":"application/x-parquet","roles":["data"],"title":"Full dataset","description":"Full parquet dataset","table:storage_options":{"account_name":"ai4edataeuwest"}},"thumbnail":{"href":"https://ai4edatasetspublicassets.blob.core.windows.net/assets/pc_thumbnails/eclipse-thumbnail.png","type":"image/png","roles":["thumbnail"],"title":"Urban Innovation Chicago Sensors"},"geoparquet-items":{"href":"abfs://items/eclipse.parquet","type":"application/x-parquet","roles":["stac-items"],"title":"GeoParquet STAC items","description":"Snapshot of the collection's STAC items exported to GeoParquet format.","msft:partition_info":{"is_partitioned":false},"table:storage_options":{"account_name":"pcstacitems"}}},"extent":{"spatial":{"bbox":[[-87.94011408252348,41.64454312178303,-87.5241371038952,42.023038586147585]]},"temporal":{"interval":[["2021-01-01T00:00:00Z",null]]}},"license":"proprietary","keywords":["Eclipse","PM25","air pollution"],"providers":[{"url":"https://www.microsoft.com/en-us/research/urban-innovation-research/","name":"Urban Innovation","roles":["producer","licensor","processor"]},{"url":"https://planetarycomputer.microsoft.com","name":"Microsoft","roles":["host"]}],"description":"The [Project Eclipse](https://www.microsoft.com/en-us/research/project/project-eclipse/) Network is a low-cost air quality sensing network for cities and a research project led by the [Urban Innovation Group]( https://www.microsoft.com/en-us/research/urban-innovation-research/) at Microsoft Research.\n\nProject Eclipse currently includes over 100 locations in Chicago, Illinois, USA.\n\nThis network was deployed starting in July, 2021, through a collaboration with the City of Chicago, the Array of Things Project, JCDecaux Chicago, and the Environmental Law and Policy Center as well as local environmental justice organizations in the city. [This talk]( https://www.microsoft.com/en-us/research/video/technology-demo-project-eclipse-hyperlocal-air-quality-monitoring-for-cities/) documents the network design and data calibration strategy.\n\n## Storage resources\n\nData are stored in [Parquet](https://parquet.apache.org/) files in Azure Blob Storage in the West Europe Azure region, in the following blob container:\n\n`https://ai4edataeuwest.blob.core.windows.net/eclipse`\n\nWithin that container, the periodic occurrence snapshots are stored in `Chicago/YYYY-MM-DD`, where `YYYY-MM-DD` corresponds to the date of the snapshot.\nEach snapshot contains a sensor readings from the next 7-days in Parquet format starting with date on the folder name YYYY-MM-DD.\nTherefore, the data files for the first snapshot are at\n\n`https://ai4edataeuwest.blob.core.windows.net/eclipse/chicago/2022-01-01/data_*.parquet\n\nThe Parquet file schema is as described below. \n\n## Additional Documentation\n\nFor details on Calibration of Pm2.5, O3 and NO2, please see [this PDF](https://ai4edatasetspublicassets.blob.core.windows.net/assets/aod_docs/Calibration_Doc_v1.1.pdf).\n\n## License and attribution\nPlease cite: Daepp, Cabral, Ranganathan et al. (2022) [Eclipse: An End-to-End Platform for Low-Cost, Hyperlocal Environmental Sensing in Cities. ACM/IEEE Information Processing in Sensor Networks. Milan, Italy.](https://www.microsoft.com/en-us/research/uploads/prod/2022/05/ACM_2022-IPSN_FINAL_Eclipse.pdf)\n\n## Contact\n\nFor questions about this dataset, contact [`msrurbanops@microsoft.com`](mailto:msrurbanops@microsoft.com?subject=eclipse%20question) \n\n\n## Learn more\n\nThe [Eclipse Project](https://www.microsoft.com/en-us/research/urban-innovation-research/) contains an overview of the Project Eclipse at Microsoft Research.\n\n","item_assets":{"data":{"type":"application/x-parquet","roles":["data"],"title":"Weekly dataset","table:storage_options":{"account_name":"ai4edataeuwest"}}},"sci:citation":"Daepp, Cabral, Ranganathan et al. (2022) Eclipse: An End-to-End Platform for Low-Cost, Hyperlocal Environmental Sensing in Cities. ACM/IEEE Information Processing in Sensor Networks. Milan, Italy. Eclipse: An End-to-End Platform for Low-Cost, Hyperlocal Environmental Sensing in Cities","stac_version":"1.0.0","table:columns":[{"name":"City","type":"byte_array","description":"City where the Microsoft Eclipse device is deployed"},{"name":"DeviceId","type":"int32","description":"Id for a given device"},{"name":"LocationName","type":"byte_array","description":"Unique string describing the device location"},{"name":"Latitude","type":"double","description":"Latitude of the device location"},{"name":"Longitude","type":"double","description":"Longitude of the device location"},{"name":"ReadingDateTimeUTC","type":"int96","description":"The UTC date time string (like 2022-03-04 20:27:25.000) when the reading from the Eclipse sensor was recorded"},{"name":"PM25","type":"double","description":"Uncalibrated Fine particulate matter (PM 2.5) in µg/m³"},{"name":"CalibratedPM25","type":"double","description":"Calibrated PM 2.5 in µg/m³"},{"name":"CalibratedO3","type":"double","description":"Calibrated Ozone in PPB"},{"name":"CalibratedNO2","type":"double","description":"Calibrated Nitrogen Dioxide in PPB"},{"name":"CO","type":"double","description":"Uncalibrated Carbon monoxide (CO) in PPM"},{"name":"Temperature","type":"double","description":"Degree Celsius"},{"name":"Humidity","type":"double","description":"Relative humidity"},{"name":"BatteryLevel","type":"double","description":"Device battery level in Volts"},{"name":"PercentBattery","type":"double","description":"Percent of device battery"},{"name":"CellSignal","type":"double","description":"Cellular signal strength in dB"}],"msft:container":"eclipse","stac_extensions":["https://stac-extensions.github.io/item-assets/v1.0.0/schema.json","https://stac-extensions.github.io/scientific/v1.0.0/schema.json","https://stac-extensions.github.io/table/v1.2.0/schema.json"],"msft:storage_account":"ai4edataeuwest","msft:short_description":"A network of low-cost air quality sensing network for cities and led by the Urban Innovation Group at Microsoft Research","msft:region":"westeurope"}