Dataset Identification:
- Terrapoint collected Light Detection and Ranging (LiDAR) data contributing to the Puget Sound Lowlands project of 2005. Lynnwood, Snohomish County, Washington. This data set covers approximately 14 square miles. The Airborne LiDAR survey was conducted using Terrapoint's 40 kHz ALTMS (Airborne Laser Terrain Mapping System), flying at an optimum height of 3500 ft AGL at 140 knots. The system consists of a 36-degree full angle laser, a Trimble 4700 GPS receiver and a Honeywell H764 IMU unit. This metadata is a collaboration of metadata reports from each of the individual 15 projects. The Puget Sound Lowlands project covers more areas over 2000-2004, these areas were excluded for this project.
- Title 2005 Puget Sound LiDAR Consortium (PSLC) Bare-Earth Topographic LiDAR: Lynnwood
- publication Date 2013-10-29
- organisation Name NOAA's Ocean Service, Office for Coastal Management (OCM)
- Contact information
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- Address
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- , Charleston, SC
- organisation Name Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Office for Coastal Management (OCM)
- organisation Name Puget Sound LiDAR Consortium (PSLC)
- organisation Name Terrapoint
- organisation Name
- Contact information
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- Linkage for online resource
- organisation Name
- Contact information
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- Linkage for online resource
- organisation Name
- Contact information
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- Linkage for online resource
- organisation Name
- Contact information
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- Linkage for online resource
Theme keywords (theme):
Topography
Elevation
Model
LiDAR
LAZ
LAS
Remote Sensing
- Title none
Location keywords:
US
Washington
Snohomish County
City of Lynnwood
- Title None
Theme keywords (theme):
- Title Activity > Observation
- publication Date 2016-11-13
Theme keywords (theme):
- Title Realm > Geosphere
- publication Date 2016-11-13
Theme keywords (theme):
- Title Resource Type > Document
- publication Date 2016-11-13
Theme keywords (theme):
- Title Property > Measure
- publication Date 2016-11-13
Theme keywords (theme):
- Title Equipment > Instrument
- publication Date 2016-11-13
Theme keywords (theme):
- Title Feature > Physiographic Feature
- publication Date 2016-11-13
purpose:
Browse image (thumbnail):
- maintenance or update frequency: asNeeded
- Constraints
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- Use limitation statement:
- Any conclusions drawn from the analysis of this information are not the responsibility of Terrapoint, PSLC, NOAA, the Office for Coastal Management or its partners.
- Legal Constraints
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- use constraint: otherRestrictions
- Other constraints
- Use Constraints: Users should be aware that temporal changes may have occurred since this data set was collected and some parts of this data may no longer represent actual surface conditions. Users should not use this data for critical applications without a full awareness of its limitations. These data depict the heights at the time of the survey and are only accurate for that time.
- Legal Constraints
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- Access Constraints otherRestrictions
- Other constraints
- Access Constraints: None
Resource extent
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- westBoundLongitude -122.33900240
- eastBoundLongitude -122.24458739
- northBoundLatitude 47.870104799
- southBoundLatitude 47.801011900
Geographic Bounding Box - Temporal Extent
Geographic Extent
2005-02-27T1200
- A footprint of this data set may be viewed in Google Earth at: ftp://coast.noaa.gov/pub/DigitalCoast/lidar1_z/geoid12a/data/2583/supplemental/wa2005_pslc_lynnwood_be.KMZ Reports explaining collection and quality assurance is available at: ftp://coast.noaa.gov/pub/DigitalCoast/lidar1_z/geoid12a/data/2583/supplemental/wa2005_pslc_lynnwood_be.pdf
- Please credit the Puget Sound LiDAR Consortium (PSLC) for these data. The PSLC is supported by the Puget Sound Regional Council, the National Aeronautical and Space Administration (NASA), the United States Geological Survey (USGS) and numerous partners in local, state, and tribal government.
Grid spatial representation
- number of grid dimensions: 2
- Grid axis property:
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- Grid Dimension
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- Dimension Name: column
- Dimension Size
- Grid Dimension
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- Dimension Name: row
- Dimension Size
- transformation parameter availability: false
Content information: feature catalog description
- Included With Dataset false
Data quality information
Scope of quality information
- name Of Measure Horizontal Positional Accuracy Report
- evaluation Method Description Horizontal positional accuracy for LiDAR is dependent upon the quality of the GPS/INS solution, sensor calibration and ground conditions at the time of data capture. The standard system results for horizontal accuracy are less than 1 meter.
- name Of Measure Horizontal Positional Accuracy
- measure Description Reporting highest reported values with uncertainty of likelihood of less than 0.60 m horizontal accuracy values. 20 - 60 centimeters on all but extremely hilly terrain.
- Quantitative Result
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- result value 0.60
- value Units
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- name Of Measure Vertical Positional Accuracy Report
- evaluation Method Description Laser point returns were optimized for internal consistency based on independent data from the LiDAR system, IMU, and aircraft. Noise points (e.g. pits and birds) were filtered from the data based on known elevation ranges. This data was then compared to 10,000+ real time kinematic ground survey points collected to verify the vertical and horizontal accuracies of the data set.
- name Of Measure Vertical Positional Accuracy
- measure Description Averaged to 25 cm. 10-15 centimeters on Hard Surfaces (roads and buildings), 15-25 centimeters on Soft/Vegetated Surfaces (flat to rolling terrain), 25-40 centimeters on Soft/Vegetated Surfaces (hilly terrain)
- Quantitative Result
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- result value 0.25
- value Units
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- evaluation Method Description LiDAR data has been collected and processed for all areas within the project study area.
- evaluation Method Description LiDAR data has been collected and processed for all areas within the project study area.
- measure Description LiDAR flight lines have been examined to ensure that there was at least 50% sidelap, there are no gaps between flightlines, and overlapping flightlines have consistent elevation values. Shaded relief images have been visually inspected for data errors such as pits, border artifacts, gaps, and shifting. The data was examined at a 1:3500 scale. A comparison of LIDAR data with 639 kinematic checkpoints collected along a roadway within the project site yielded the results given in Table 2 (values in meters).
Resource distribution information
Distributor
- organisation Name NOAA Office for Coastal Management
- Contact information
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- Telephone
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- Voice 843-740-1202
- Address
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- 2234 South Hobson Avenue, Charleston, SC, 29405-2413
- electronic Mail Address coastal.info@noaa.gov
- maintenance or update frequency: annually
- notes: This metadata was automatically generated from the FGDC Content Standards for Digital Geospatial Metadata standard (version FGDC-STD-001-1998) using the 2012-06-20T17:21:00 version of the FGDC RSE to ISO 19115-2 transform.
- organisation Name NOAA Office for Coastal Management
- Contact information
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- Telephone
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- Voice 843-740-1202
- Address
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- 2234 South Hobson Avenue, Charleston, SC, 29405-2413
- electronic Mail Address coastal.info@noaa.gov