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Metadata Identifier: gov.noaa.csc.maps:2004-2008_FDEM_Southwest_m529
MD_DataIdentification
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2004 - 2008 Florida Division of Emergency Management (FDEM) Lidar Project:
Southwest Florida
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This Light Detection and Ranging (LiDAR) LAS dataset is a topographic survey
conducted for a coalition of GIS practitioners, including the Florida Division of
Emergency Management (FDEM), Florida Water Management Districts, Florida Fish and
Wildlife Conservation Commission, Florida Department of Environmental Protection,
Army Corps of Engineers Jacksonville District, and other state and federal agencies.
The goal for this project is to use the LiDAR data as new elevation inputs for updated
SLOSH data grids. The ultimate result is the update of the Regional Hurricane Evacuation
Studies (RHES) for the state. The State of Florida Division of Emergency Management
LiDAR Survey was collected under the guidance of a Professional Mapper/Surveyor. This
is a classified lidar data set, bare-earth points (class 2), noise points (class 7),
water returns (class 9), and unclassified data (class 1). Class 12 contains LiDAR
points removed from the overlap region between adjacent flight lines. The LiDAR data
was flown at a density sufficient to support a maximum final post spacing of 4 feet
for unobscured areas. This data set is a collection of smaller project areas collected
at different times in southwest Florida. Specifically, the data were collected within
portions of Pinellas, Hillsborough, Manatee, Sarasota, Charlotte, Lee, Collier, Monroe,
and a small portion of the coastal area of Pasco, Counties. Project Area A, also in
Pasco County, is data from the Southwest Florida Water Management District (SWFWMD),
collected in 2004, and was not part of the FDEM collection effort. Project Area A
has been added to this FDEM southwest Florida data set. The dates of collection are:
Project Area A: 2004 Project Area B: 20070706-20070810 Project Area C: 20070706-20070810
Project Area D: 20070717-20070729 Project Area E: 20070717-20070708 Project Area F:
20070618-20070806 Project Area G: 20070612-20070630, 20070702, 20070714, 20070804-20070805
Project Area H: 20070615-20070629 Lee Buy Up: 20070811-20070824 Sarasota Buy Up: 20070828-20070830
Pasco Coastal: 20080209
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SV_Identification
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2004 - 2008 Florida Division of Emergency Management (FDEM) Lidar Project: Southwest
Florida
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Lidar Final Reports |
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North American Datum 1983 |
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none |
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resourceProvider |
http://www.epsg-registry.org/export.htm?gml=urn:ogc:def:crs:EPSG::4269 |
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Citation URL |
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ftp://ftp.csc.noaa.gov/pub/crs/beachmap/qa_docs/fl/fdem/southwest/ |
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NOAA CSC (originator) |
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DOC/NOAA/NOS/CSC > Coastal Services Center, National Ocean Service, National Oceanic
and Atmospheric Administration, U.S. Department of Commerce
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csc.info@noaa.gov |
originator |
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NOAA CSC (publisher) |
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DOC/NOAA/NOS/CSC > Coastal Services Center, National Ocean Service, National Oceanic
and Atmospheric Administration, U.S. Department of Commerce
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csc.info@noaa.gov |
publisher |
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NOAA CSC(distributor) |
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DOC/NOAA/NOS/CSC > Coastal Services Center, National Ocean Service, National Oceanic
and Atmospheric Administration, U.S. Department of Commerce
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csc.info@noaa.gov |
distributor |
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NOAA CSC (processor) |
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DOC/NOAA/NOS/CSC > Coastal Services Center, National Ocean Service, National Oceanic
and Atmospheric Administration, U.S. Department of Commerce
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csc.info@noaa.gov |
processor |
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EPSG Registry |
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European Petroleum Survey Group |
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publisher |
http://www.epsg-registry.org/ |
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Florida Division of Emergency Management |
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gis@dca.state.fl.us |
pointOfContact |
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Florida Division of Emergency Management (FDEM) |
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originator |
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Mike Sutherland(author) |
Mike Sutherland |
DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department
of Commerce
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mike.sutherland@noaa.gov |
author |
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Mike Sutherland |
Mike Sutherland |
DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department
of Commerce
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mike.sutherland@noaa.gov |
distributor |
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Pamela Grothe |
DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department
of Commerce
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processor |
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Richard R. Hudson, PE, PSM, CP |
Woolpert, Inc. |
Project Manager |
www.woolpert.com |
processor |
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ftp://ftp.csc.noaa.gov/pub/crs/beachmap/qa_docs/fl/fdem/southwest/ |
Lidar Final Reports |
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information |
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http://www.epsg-registry.org/ |
European Petroleum Survey Group Geodetic Parameter Registry |
Registry that accesses the EPSG Geodetic Parameter Dataset, which is a structured
dataset of Coordinate Reference Systems and Coordinate Transformations.
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search |
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http://www.epsg-registry.org/export.htm?gml=urn:ogc:def:crs:EPSG::4269 |
NAD83 |
Link to Geographic Markup Language (GML) description of reference system. |
information |
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Ellipsoid in Meters |
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urn:ogc:def:crs:EPSG::4269 |
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Bounding Box |
Temporal Extent |
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-82.857559 |
-81.246662 |
28.431265 |
25.777308 |
2004-01-01 |
2008-02-09 |
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-82.857559 |
-81.246662 |
28.431265 |
25.777308 |
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Lidar Use Limitation |
These data depict the elevations 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
or any of its partners. These data are NOT to be used for navigational purposes.
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Ellipsoid |
Ellipsoid in Meters |
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NAD83 |
urn:ogc:def:crs:EPSG::4269 |
North American Datum 1983 |
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Lidar Final Reports |
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crossReference |
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2008-07-31T00:00:00 |
LiDAR was collected within portions of Pinellas, Hillsborough, Manatee,
Sarasota, Charlotte, Lee, Collier, Monroe, and a very small coastal area of Pasco,
Counties. System Parameters/Flight Plan. The LiDAR system acquisition parameters were
developed based on a maximum average ground sample distance of 4 feet. Two Leica ALS50
sensors were used for acquisition. Acquisition specifications for the two sensors
were as follows: Sensor 19 Field of View (full angle) - 29 degrees Nominal flight
altitude (AMSL) - 3999.30 feet Airspeed - 54.02 meters/sec Laser pulse rate - 75,000
Hz Nominal swath width (on ground) - 2068.58 feet Maximum cross track point spacing
- 3.91 feet Maximum along track point spacing - 3.94 feet Average point spacing -
2.21 feet Flight line spacing - 1544.95 feet Side overlap - 25.31 percent Sensor 59
Field of View (full angle) - 29 degrees Nominal flight altitude (AMSL) - 3999.30 feet
Airspeed - 60.70 meters/sec Laser pulse rate - 84,400 Hz Nominal swath width (on ground)
- 2068.58 feet Maximum cross track point spacing - 3.94 feet Maximum along track point
spacing - 3.91 feet Average point spacing - 2.21 feet Flight line spacing - 1413.72
feet Side overlap - 31.66 percent LiDAR System Calibration. Prior to the LiDAR acquisition,
the system underwent a calibration to verify the operational accuracy and misalignment
angles. Boresight calibrations were performed for each LiDAR system at the beginning
and end of each flight mission. LiDAR Data Acquisition. LiDAR data acquisition only
occurred when the sky was sufficiently clear of clouds, smoke, and atmospheric haze.
The LiDAR data was processed immediately after the acquisition to verify the coverage
had no voids. GPS/Inertial Measurement Unit (IMU) Post Processing. The GPS and IMU
data was post processed using differential and kalman filter algorithms to derive
a best estimate of trajectory. The quality of the solution was verified to be consistent
with the accuracy requirements of the project. LiDAR Processing and Classification.
The LiDAR data was post processed and verified to be consistent with the project requirements
in terms of post spacing and absence of artifacts. The point cloud underwent classification
to determine bare-earth points (class 2), noise points (class 7), water returns (class
9), and unclassified data (class 1). Class 12 contains LiDAR points removed from the
overlap region between adjacent flight lines. The MASSPOINT feature class contains
ground (class 2) points only.
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2010-01-01T00:00:00 |
The NOAA Coastal Services Center (CSC) received files in LAS format.
The files contained LiDAR intensity and elevation measurements. CSC performed the
following processing on the data to make it available within Digital Coast: 1. The
data were converted from State Plane Florida West coordinates to geographic coordinates.
2. The data were converted from NAVD88 heights to ellipsoid heights using Geoid03.
3. The LAS header fields were sorted by latitude and updated.
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2011-10-05T00:00:00 |
The NOAA National Geophysical Data Center (NGDC) received lidar data
files via ftp transfer from the NOAA Coastal Services Center. The data are
currently being served via NOAA CSC Digital Coast at http://www.csc.noaa.gov/digitalcoast/.
The data can be used to re-populate the system. The data are archived in LAS
or LAZ format. The LAS format is an industry standard for LiDAR data developed by
the American Society of Photogrammetry and Remote Sensing (ASPRS); LAZ is a loseless
compressed version of LAS developed by Martin Isenburg (http://www.laszip.org/). The
data are exclusively in geographic coordinates (either NAD83 or ITRF94). The data
are referenced vertically to the ellipsoid (either GRS80 or ITRF94), allowing for
the ability to apply the most up to date geoid model when transforming to orthometric
heights.
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