Digital Elevation Model, 0.25 m, Barrow Environmental Observatory, Utqiagvik (Barrow), Alaska, 2013

DOI: https://doi.org/10.5440/1224720
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NGEE Arctic Record ID: NGA017
Data Version: 1.0
Abstract

This 0.25m horizontal resolution digital elevation model (DEM) was developed from Airborne Laser Altimetry flown by Aerometric Inc, now known as Quantum Spatial, Inc. on July 12, 2013. One Mission was flown and the data jointly processed with LANL personnel to produce a 0.25m DEM covering a region approximately 2.8km wide and 12.4km long extending from the coast above North Salt Lagoon to south of Gas Well Road. This DEM encompasses a diverse range of hydrologic, geomorphic, geophysical and biological features typical of the Barrow Peninsula. Vertical accuracy at the 95% confidence interval was computed as 0.143m. The coordinate system, datum, and geoid for this DEM are UTM Zone 4N, NAD83 (2011), NAVD88 (GEOID09). 

The Next-Generation Ecosystem Experiments: Arctic (NGEE Arctic), was a research effort to reduce uncertainty in Earth System Models by developing a predictive understanding of carbon-rich Arctic ecosystems and feedbacks to climate. NGEE Arctic was supported by the Department of Energy’s Office of Biological and Environmental Research.

The NGEE Arctic project had two field research sites: 1) located within the Arctic polygonal tundra coastal region on the Barrow Environmental Observatory (BEO) and the North Slope near Utqiagvik (Barrow), Alaska and 2) multiple areas on the discontinuous permafrost region of the Seward Peninsula north of Nome, Alaska.

Through observations, experiments, and synthesis with existing datasets, NGEE Arctic provided an enhanced knowledge base for multi-scale modeling and contributed to improved process representation at global pan-Arctic scales within the Department of Energy’s Earth system Model (the Energy Exascale Earth System Model, or E3SM), and specifically within the E3SM Land Model component (ELM).

Authors
Cathy Wilson (cjw@lanl.gov) 0000-0001-9896-0912
Garrett Altmann (gla@lanl.gov)
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Dataset Citation
Cathy Wilson, Garrett Altmann. 2017. Digital Elevation Model, 0.25 m, Barrow Environmental Observatory, Utqiagvik (Barrow), Alaska, 2013. Next Generation Ecosystem Experiments Arctic Data Collection, Oak Ridge National Laboratory, U.S. Department of Energy, Oak Ridge, Tennessee, USA. Dataset accessed on [INSERT_DATE] at https://doi.org/10.5440/1224720.
Dates
2013-07-12 - 2013-07-12
Geographic Location
NGEE Arctic Utqiagvik (Barrow), Alaska
North71.35
South71.2
East-156.4
West-156.7
Place Keywords:
Utqiagvik, Alaska | North Slope, Alaska | Area B | DTLB-1 | Intensive site 1 | Alaska | Barrow, Alaska | Arctic Coastal Plain | Barrow Environmental Observatory (BEO) | Area D | Area A | Intensive site 0 | Area C | DTLB-2
Subject Keywords:
Land Surface | DIGITAL ELEVATION/TERRAIN MODEL (DEM) | TERRAIN ELEVATION | Topography | LIDAR | Laser backscatter | Elevation |
GCMD Keywords
EARTH SCIENCE > LAND SURFACE > TOPOGRAPHY
Methodology
LiDAR data acquisition was completed on July 12, 2013. One mission was flown. The LiDAR data for this project was collected with the Aerometric Leica ALS-70 LiDAR system. All flight planning and acquisition was completed using Leica FPES. Aerometric used the following sensor acquisition settings. The flight altitude (above ground level) was 700 meters, laser pulse rate was 350 kHz, mirror scan frequency was 58 Hz, scan angle (+/-) was 40 degrees, side lap was 50 %, and ground speed was 150 kts. The LiDAR data for this project was acquired in one mission. Airborne GPS and IMU data was collected during acquisition for use in determining the sensor's position. The mission included the acquisition of all planned project lines and cross flights. The cross flights were flown perpendicular to the planned flight lines and their data used in the in-situ calibration of the sensor. The mission was processed using Leica IPAS-TC software to determine both the airborne GNSS trajectory, and the blending of inertial data. Aerometric operated a GPS base station on location during the acquisition of this data. The position of the base station and raw GPS data were computed by Aerometric for use in processing. The airborne GNSS/IMU post processed data along with the LiDAR raw measurements were processed using Leica IPAS-TC 3.1. This software was used to match the raw LiDAR measurements with the computed positions and attitudes of the LiDAR sensor. The result was a point cloud of LiDAR measured points referenced to the ground control system. One LAS 1.2 file was generated per flightline.
Related References
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Related Identifiers
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Metadata Contact
Contact information for the individual or organization that is knowledgeable about the data.
Person: Garrett Altmann
Organization: Los Alamos National Lab
Email: gla@lanl.gov
Point of Contact
Contact information for the individual or organization that is knowledgeable about the data.
Person: Cathy Wilson
Organization: Los Alamos National Laboratory
Email: cjw@lanl.gov
Dataset Usage Rights
Public Datasets

This work is licensed under the Creative Commons Attribution 4.0 International License. To view a copy of this license, visit https://creativecommons.org/licenses/by/4.0.

See the NGEE Arctic Data Policies for more details https://ngee-arctic.ornl.gov/data-policies.

Distribution Point of Contact
Contact: Data Center Support
Organization: Next-Generation Ecosystem Experiments (NGEE) Arctic Project, Oak Ridge National Laboratory
Email: support@ngee-arctic.ornl.gov