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488 results returned

  1. Title: Solar Insolation, Minnesota] (2006-2012)

    Contributors:

    Summary: The Minnesota Solar Suitability Analysis attempts to provide solar insolation analysis for the entire State of Minnesota. As far as we are aware, it is the only project of its scale in existence; similar studies have been limited to metro areas or focus on rooftop insolation. The project's existence is feasible because of statewide, freely available aerial lidar coverage. And the commitment of the team to work long hours on this unfunded project. The project finds itself at the intersection of renewable energy, big data analysis, geospatial technology, and open data availability. This data provides a measure of incedent solar radiation as it is intercepted by the earth surface, or features (such as vegetation and buildings) standing above the earth surface. The data is intended to be used to assess the suitability of a site for solar panel (photovoltaic cell) installations. The analysis used to produce this dataset looks at geographic location, surface slope, surface aspect, and the effects of shading based on local topography and adjacent structures. A digital surface model was generated from raw LiDAR data. Then, using this DSM, an individual locations on a grid surface were assessed for the amount of direct and indirect radiation that reaches the surface. This analysis was conducted at a 1m resolution for the entire state of Minnesota.

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  2. Title: Digital Surface Model [Minnesota] (2006-2012)

    Contributors:

    Summary: A 1m resolution digital surface model that was generated from raw lidar data. This dataset was an intermediate product of a process to model potential solar insolation for the state of Minnesota. The Digital Surface Model (DSM) was created to represent the terrain and all object present on that terrain. This included buildings, tree cover, roads, and other natural and human-altered landscapes. In effect, the DSM is a three dimensional representation of Minnesota. It was generated using a Streaming Delauney Triangulation process through rapidlasso's LAStools software package. In this process, triangles are iteratively generated using nearby lidar returns and values for each point are determined by extracting interpolated elevation from the surface of the triangle. The result is a 1 meter resolution raster covering the state. Lidar is a form of active remote sensing technology that uses light pulses, most commonly in the near-infrared wavelengths, to collected surface elevation data. A laser scanner, mounted in an aircraft and combined with high-accuracy GPS, collects light returns that are interpolated into a point cloud. Each point represents one return from a laser pulse. The laser pulse has the ability to penetrate vegetation, multiple laser returns can be gathered for each pulse including the returns from below the vegetation.The accuracy of lidar returns allow for a unique, multi-faceted analytical dataset. The first point returns can be used to interpolate a topology of Minnesota that models the objects (i.e. building, trees, etc) and geography resting upon the terrain. The lidar point files for the state of Minnesota used in the study were collected between 2006 and 2012 through an intergovernmental initiative with the primary object of providing improved elevation data for flood mapping. In some regions, existing lidar data was acquired and transformed to new state standards. Areas where data did not exist or could not be transformed, were collected by contracted vendors. The composite data forms a seamless coverage of the state with a resolutions of at least 1.5 meters. Refer to metadata.html for full details.

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  3. Title: Block-level, non-work accessibility data for planned transitways in the Twin Cities [Minnesota]

    Contributors:

    Summary: Accessibility to grocery stores, primary healthcare, elementary, middle, and high schools by transit is measured for the Twin Cities. Census block-level minimum travel times to the first, second, third,...,tenth destination are calculated before and after incorporating services changes to the transit network. The transit network baseline includes the Green Line extension and Orange Line. Five planned transitways are evaluated against the baseline including the B Line and local route 21 changes, the D Line and local route 5 changes, the E Line and local route 6 changes, the Gold Line, and the Rush Line. The analysis is completed for four departure windows during the weekday. The report associated with this data aggregates across the Twin Cities metropolitan worker population and disaggregates by worker demographics. The data are organized by scenario then by departure window for a total of 28 scenarios. Each scenario has a Geopackage spatial file which is comprised of result layers for the five destination types studied. Travel times between blocks and X number of destinations are given in seconds. For example, this data answers the question "What is the minimum travel time on transit needed to reach 3 different grocery stores?"

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  4. Title: Block-level accessibility data for managed lanes in the Twin Cities] (2019)

    Contributors:

    Summary: The data are provided in 4 ESRI shapefiles. The shapefiles are segmented by the analysis day of the week and departure time. The fields include the Census block-level 15-digit identifier (GEOID10), baseline accessibility, tier 1 managed lane scenario accessibility, their absolute difference, their percent difference. CRS EPSG: 4326 - WGS 84. Users should be able to map the cumulative job accessibility by automobile for 4 comparisons between baseline (general purpose lanes) and managed lanes (tier 1 corridors).

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  5. Title: Block-level accessibility data for transit-way evaluation in the Twin Cities metropolitan region] (2019)

    Contributors:

    Summary: The data are provided in 20 shapefiles. The shapefiles are segmented by the scenario comparison and the analysis day/time. The fields include the Census block-level 15-digit identifiers, baseline accessibility, alternative scenario accessibility, their absolute difference, their percent difference. CRS EPSG: 4326 - WGS 84. Users should be able to map the cumulative job accessibility by transit for 5 transit network scenarios and 4 comparisons between transit networks.

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  6. Title: Access Across America Bike Data [Portland-Vancouver-Hillsboro, OR-WA] (2017)

    Contributors:

    Summary: This data was created as part of a study that examined the accessibility to jobs by biking in the 50 largest (by population) metropolitan areas in the United States, on low-stress and higher-stress streets via a Level of Traffic Stress analysis process. It is the most detailed evaluation to date of access to jobs by bike nationally, and it allows for a direct comparison of the bicycle accessibility performance of America's largest metropolitan areas. This data are part of a longitudinal study. Downloads are available for individual metropolitan regions, as well as states, in Geopackage format. Each individual ZIP file for a metropolitan area or state contains four ZIP-compressed Geopackage files of accessibility data, one for each of the four Level of Traffic Stress levels 1-4. A combined ZIP file containing the data for all metropolitan regions is also available in Geopackage format, and is labeled as "All Metropolitan Regions."

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  7. Title: Access Across America Bike Data [Virginia Beach-Norfolk-Newport News, VA-NC] (2017)

    Contributors:

    Summary: This data was created as part of a study that examined the accessibility to jobs by biking in the 50 largest (by population) metropolitan areas in the United States, on low-stress and higher-stress streets via a Level of Traffic Stress analysis process. It is the most detailed evaluation to date of access to jobs by bike nationally, and it allows for a direct comparison of the bicycle accessibility performance of America's largest metropolitan areas. This data are part of a longitudinal study. Downloads are available for individual metropolitan regions, as well as states, in Geopackage format. Each individual ZIP file for a metropolitan area or state contains four ZIP-compressed Geopackage files of accessibility data, one for each of the four Level of Traffic Stress levels 1-4. A combined ZIP file containing the data for all metropolitan regions is also available in Geopackage format, and is labeled as "All Metropolitan Regions."

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  8. Title: Access Across America Bike Data [San Jose-Sunnyvale-Santa Clara, CA] (2017)

    Contributors:

    Summary: This data was created as part of a study that examined the accessibility to jobs by biking in the 50 largest (by population) metropolitan areas in the United States, on low-stress and higher-stress streets via a Level of Traffic Stress analysis process. It is the most detailed evaluation to date of access to jobs by bike nationally, and it allows for a direct comparison of the bicycle accessibility performance of America's largest metropolitan areas. This data are part of a longitudinal study. Downloads are available for individual metropolitan regions, as well as states, in Geopackage format. Each individual ZIP file for a metropolitan area or state contains four ZIP-compressed Geopackage files of accessibility data, one for each of the four Level of Traffic Stress levels 1-4. A combined ZIP file containing the data for all metropolitan regions is also available in Geopackage format, and is labeled as "All Metropolitan Regions."

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  9. Title: Access Across America Bike Data [Jacksonville, FL] (2017)

    Contributors:

    Summary: This data was created as part of a study that examined the accessibility to jobs by biking in the 50 largest (by population) metropolitan areas in the United States, on low-stress and higher-stress streets via a Level of Traffic Stress analysis process. It is the most detailed evaluation to date of access to jobs by bike nationally, and it allows for a direct comparison of the bicycle accessibility performance of America's largest metropolitan areas. This data are part of a longitudinal study. Downloads are available for individual metropolitan regions, as well as states, in Geopackage format. Each individual ZIP file for a metropolitan area or state contains four ZIP-compressed Geopackage files of accessibility data, one for each of the four Level of Traffic Stress levels 1-4. A combined ZIP file containing the data for all metropolitan regions is also available in Geopackage format, and is labeled as "All Metropolitan Regions."

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  10. Title: Access Across America Bike Data [New Orleans-Metairie-Kenner, LA] (2017)

    Contributors:

    Summary: This data was created as part of a study that examined the accessibility to jobs by biking in the 50 largest (by population) metropolitan areas in the United States, on low-stress and higher-stress streets via a Level of Traffic Stress analysis process. It is the most detailed evaluation to date of access to jobs by bike nationally, and it allows for a direct comparison of the bicycle accessibility performance of America's largest metropolitan areas. This data are part of a longitudinal study. Downloads are available for individual metropolitan regions, as well as states, in Geopackage format. Each individual ZIP file for a metropolitan area or state contains four ZIP-compressed Geopackage files of accessibility data, one for each of the four Level of Traffic Stress levels 1-4. A combined ZIP file containing the data for all metropolitan regions is also available in Geopackage format, and is labeled as "All Metropolitan Regions."

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  11. Title: Access Across America Bike Data [Indianapolis-Carmel, IN] (2017)

    Contributors:

    Summary: This data was created as part of a study that examined the accessibility to jobs by biking in the 50 largest (by population) metropolitan areas in the United States, on low-stress and higher-stress streets via a Level of Traffic Stress analysis process. It is the most detailed evaluation to date of access to jobs by bike nationally, and it allows for a direct comparison of the bicycle accessibility performance of America's largest metropolitan areas. This data are part of a longitudinal study. Downloads are available for individual metropolitan regions, as well as states, in Geopackage format. Each individual ZIP file for a metropolitan area or state contains four ZIP-compressed Geopackage files of accessibility data, one for each of the four Level of Traffic Stress levels 1-4. A combined ZIP file containing the data for all metropolitan regions is also available in Geopackage format, and is labeled as "All Metropolitan Regions."

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  12. Title: Access Across America Bike Data [Minneapolis-St. Paul-Bloomington, MN-WI] (2017)

    Contributors:

    Summary: This data was created as part of a study that examined the accessibility to jobs by biking in the 50 largest (by population) metropolitan areas in the United States, on low-stress and higher-stress streets via a Level of Traffic Stress analysis process. It is the most detailed evaluation to date of access to jobs by bike nationally, and it allows for a direct comparison of the bicycle accessibility performance of America's largest metropolitan areas. This data are part of a longitudinal study. Downloads are available for individual metropolitan regions, as well as states, in Geopackage format. Each individual ZIP file for a metropolitan area or state contains four ZIP-compressed Geopackage files of accessibility data, one for each of the four Level of Traffic Stress levels 1-4. A combined ZIP file containing the data for all metropolitan regions is also available in Geopackage format, and is labeled as "All Metropolitan Regions."

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  13. Title: Access Across America Bike Data [Cleveland-Elyria-Mentor, OH] (2017)

    Contributors:

    Summary: This data was created as part of a study that examined the accessibility to jobs by biking in the 50 largest (by population) metropolitan areas in the United States, on low-stress and higher-stress streets via a Level of Traffic Stress analysis process. It is the most detailed evaluation to date of access to jobs by bike nationally, and it allows for a direct comparison of the bicycle accessibility performance of America's largest metropolitan areas. This data are part of a longitudinal study. Downloads are available for individual metropolitan regions, as well as states, in Geopackage format. Each individual ZIP file for a metropolitan area or state contains four ZIP-compressed Geopackage files of accessibility data, one for each of the four Level of Traffic Stress levels 1-4. A combined ZIP file containing the data for all metropolitan regions is also available in Geopackage format, and is labeled as "All Metropolitan Regions."

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  14. Title: Access Across America Bike Data [Denver-Aurora-Broomfield, CO] (2017)

    Contributors:

    Summary: This data was created as part of a study that examined the accessibility to jobs by biking in the 50 largest (by population) metropolitan areas in the United States, on low-stress and higher-stress streets via a Level of Traffic Stress analysis process. It is the most detailed evaluation to date of access to jobs by bike nationally, and it allows for a direct comparison of the bicycle accessibility performance of America's largest metropolitan areas. This data are part of a longitudinal study. Downloads are available for individual metropolitan regions, as well as states, in Geopackage format. Each individual ZIP file for a metropolitan area or state contains four ZIP-compressed Geopackage files of accessibility data, one for each of the four Level of Traffic Stress levels 1-4. A combined ZIP file containing the data for all metropolitan regions is also available in Geopackage format, and is labeled as "All Metropolitan Regions."

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  15. Title: Access Across America Bike Data [St. Louis, MO-IL] (2017)

    Contributors:

    Summary: This data was created as part of a study that examined the accessibility to jobs by biking in the 50 largest (by population) metropolitan areas in the United States, on low-stress and higher-stress streets via a Level of Traffic Stress analysis process. It is the most detailed evaluation to date of access to jobs by bike nationally, and it allows for a direct comparison of the bicycle accessibility performance of America's largest metropolitan areas. This data are part of a longitudinal study. Downloads are available for individual metropolitan regions, as well as states, in Geopackage format. Each individual ZIP file for a metropolitan area or state contains four ZIP-compressed Geopackage files of accessibility data, one for each of the four Level of Traffic Stress levels 1-4. A combined ZIP file containing the data for all metropolitan regions is also available in Geopackage format, and is labeled as "All Metropolitan Regions."

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  16. Title: Access Across America Bike Data [Memphis, TN-MS-AR] (2017)

    Contributors:

    Summary: This data was created as part of a study that examined the accessibility to jobs by biking in the 50 largest (by population) metropolitan areas in the United States, on low-stress and higher-stress streets via a Level of Traffic Stress analysis process. It is the most detailed evaluation to date of access to jobs by bike nationally, and it allows for a direct comparison of the bicycle accessibility performance of America's largest metropolitan areas. This data are part of a longitudinal study. Downloads are available for individual metropolitan regions, as well as states, in Geopackage format. Each individual ZIP file for a metropolitan area or state contains four ZIP-compressed Geopackage files of accessibility data, one for each of the four Level of Traffic Stress levels 1-4. A combined ZIP file containing the data for all metropolitan regions is also available in Geopackage format, and is labeled as "All Metropolitan Regions."

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  17. Title: Access Across America Bike Data [Providence-New Bedford-Fall River, RI-MA] (2017)

    Contributors:

    Summary: This data was created as part of a study that examined the accessibility to jobs by biking in the 50 largest (by population) metropolitan areas in the United States, on low-stress and higher-stress streets via a Level of Traffic Stress analysis process. It is the most detailed evaluation to date of access to jobs by bike nationally, and it allows for a direct comparison of the bicycle accessibility performance of America's largest metropolitan areas. This data are part of a longitudinal study. Downloads are available for individual metropolitan regions, as well as states, in Geopackage format. Each individual ZIP file for a metropolitan area or state contains four ZIP-compressed Geopackage files of accessibility data, one for each of the four Level of Traffic Stress levels 1-4. A combined ZIP file containing the data for all metropolitan regions is also available in Geopackage format, and is labeled as "All Metropolitan Regions."

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  18. Title: Access Across America Bike Data [Oklahoma City, OK] (2017)

    Contributors:

    Summary: This data was created as part of a study that examined the accessibility to jobs by biking in the 50 largest (by population) metropolitan areas in the United States, on low-stress and higher-stress streets via a Level of Traffic Stress analysis process. It is the most detailed evaluation to date of access to jobs by bike nationally, and it allows for a direct comparison of the bicycle accessibility performance of America's largest metropolitan areas. This data are part of a longitudinal study. Downloads are available for individual metropolitan regions, as well as states, in Geopackage format. Each individual ZIP file for a metropolitan area or state contains four ZIP-compressed Geopackage files of accessibility data, one for each of the four Level of Traffic Stress levels 1-4. A combined ZIP file containing the data for all metropolitan regions is also available in Geopackage format, and is labeled as "All Metropolitan Regions."

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  19. Title: Access Across America Bike Data [Boston-Cambridge-Quincy, MA-NH] (2017)

    Contributors:

    Summary: This data was created as part of a study that examined the accessibility to jobs by biking in the 50 largest (by population) metropolitan areas in the United States, on low-stress and higher-stress streets via a Level of Traffic Stress analysis process. It is the most detailed evaluation to date of access to jobs by bike nationally, and it allows for a direct comparison of the bicycle accessibility performance of America's largest metropolitan areas. This data are part of a longitudinal study. Downloads are available for individual metropolitan regions, as well as states, in Geopackage format. Each individual ZIP file for a metropolitan area or state contains four ZIP-compressed Geopackage files of accessibility data, one for each of the four Level of Traffic Stress levels 1-4. A combined ZIP file containing the data for all metropolitan regions is also available in Geopackage format, and is labeled as "All Metropolitan Regions."

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  20. Title: Access Across America Bike Data [Salt Lake City, UT] (2017)

    Contributors:

    Summary: This data was created as part of a study that examined the accessibility to jobs by biking in the 50 largest (by population) metropolitan areas in the United States, on low-stress and higher-stress streets via a Level of Traffic Stress analysis process. It is the most detailed evaluation to date of access to jobs by bike nationally, and it allows for a direct comparison of the bicycle accessibility performance of America's largest metropolitan areas. This data are part of a longitudinal study. Downloads are available for individual metropolitan regions, as well as states, in Geopackage format. Each individual ZIP file for a metropolitan area or state contains four ZIP-compressed Geopackage files of accessibility data, one for each of the four Level of Traffic Stress levels 1-4. A combined ZIP file containing the data for all metropolitan regions is also available in Geopackage format, and is labeled as "All Metropolitan Regions."

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