2011 NOAA National Geodetic Survey (NGS) Lidar: Fire Island, NY and Cape May to Absecon Inlet, NJ

These data were collected by the National Oceanic Atmospheric Administration National Geodetic Survey Remote Sensing Division using a

Riegl Q680i-D system. The data includes topographic data in an LAS 1.2 format file classified as unclassified (1), ground (2), and water (9)in accordance with the American Society for Photogrammetry and Remote Sensing (ASPRS) classification standards. This data set also includes lidar intensity values and encoded RGB image values. Fire Island, NY data collected on Nov 25, 2011 and the Cape May to Absecon

Inlet, NJ data was collected on July 16, 2011.

This lidar was acquired by the NOAA Remote Sensing Division to support NOAA's Coastal Mapping Program. It is not intended for mapping,charting, or navigation. In addition, it will be used for ongoing research efforts for testing and developing standards for airborne lidar.

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Data include all lidar returns. Outliers or false returns (e.g., returns from birds, atmospheric particles, and or system noise) maybe present in the data. An automated ground classification algorithm was used to determine bare earth point classification. It should be noted that not all water returns were correctly classified, therefore the ground classification could proceed into water bodies, and should be removed by the user.

A footprint of this data set may be viewed in Google Earth at:

https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/1170/supplemental/2011_NGS_Lidar_Fire_Island_NY_and_Cape_May_to_Abecon_Inlet_NJ.kmz

Any conclusions drawn from the analysis of this information are not the responsibility of NGS, the Office for Coastal Management or its partners.

This lidar was obtained for use by NGS during the course of its development of potential final products to fulfill its statutory mission.

Although NGS is making this lidar available to others who may find the data of value, NGS does not warrant, endorse, or recommend the use

of this data for any given purpose. NGS is providing this lidar as is, and NGS disclaims any and all warranties, whether expressed or

implied, including (without limitation) any implied warranties of merchantability or fitness for a particular purpose. In no event will

NGS be liable to you or any third party for any direct, indirect, incidental, consequential, special, or exemplary damages, or lost profits

resulting from any use or misuse of these data.

This data can be obtained on-line at the following URL:

https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=1170

This data set is dynamically generated based on user-specified parameters.

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These data depict the heights at the time of the survey and are only accurate for that time. 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. Any conclusions drawn from analysis

of this information are not the responsibility of NOAA. We request that you credit the National Oceanic and Atmospheric Administration (NOAA)

when you use these data in a report, publication, or presentation.

OS Independent

The data positions were obtained using post processed KGPS methods. The horizontal accuracy of the data is better than plus or minus 1.0 m.; Quantitative Value: 1.0 meters, Test that produced the value: 2 Sigma

The data positions were obtained using post processed KGPS methods. The vertical accuracy of the data is better than plus or minus 0.30 m.; Quantitative Value: 0.30 meters, Test that produced the value: 2 Sigma

Not applicable

Not applicable