Snow-Off Digital Terrain Model (DTM) from 2010 LiDAR for the Boulder Creek Critical Zone Observatory (CZO), Colorado

Metadata also available as

Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: Suzanne Prestrud Anderson
Originator: Qinghua Guo
Originator: Eric Parrish
Publication_Date: 20111231
Title:
Snow-Off Digital Terrain Model (DTM) from 2010 LiDAR for the Boulder Creek Critical Zone Observatory (CZO), Colorado
Edition: Version 1
Geospatial_Data_Presentation_Form: remote-sensing image
Series_Information:
Series_Name:
Snow-Off LiDAR Point Cloud and Digital Elevation Models (DEMs) from 2010 for the Boulder Creek Critical Zone Observatory (CZO), Colorado
Issue_Identification: Digital Surface Model
Publication_Information:
Publication_Place: Berkley, CA
Publisher: National Center for Airborne Laser Mapping (NCALM)
Other_Citation_Details:
Please give data set credit as below and cite as: Anderson, S.P., Qinghua, G., and Parrish, E.G., 2012, Snow-on and snow-off LiDAR point cloud data and digital elevation models for study of topography, snow, ecosystems, and environmental change at Boulder Creek Critical Zone Observatory, Colorado: Boulder Creek CZO, INSTAAR, University of Colorado at Boulder, digital media.
Online_Linkage: <http://www.opentopography.org/>
Online_Linkage: <http://www.ncalm.org>
Description:
Abstract:
This 1m Digital Terrain Model (DTM) is a snow-off DTM derived from bare-ground Light Detection and Ranging (LiDAR) point cloud data from August 2010 for the Boulder Creek Critical Zone Observatory (CZO), near Boulder Colorado. This dataset is better suited for derived layers such as slope angle, aspect, and contours. The DTM was created from 1,375 LiDAR point cloud tiles subsampled from 10 points/m2 to 1-meter postings, acquired by the National Center for Airborne Laser Mapping (NCALM) project. This data was collected in collaboration between the Boulder Creek CZO and NCALM, both funded by the National Science Foundation (NSF). The DTM has the functionality of a map layer for use in Geographic Information Systems (GIS) or remote sensing software. Total area imaged is 598.92 km^2. The LiDAR point cloud data was acquired with an Optech Gemini Airborne Laser Terrain Mapper (ALTM) and mounted in a Piper Twin PA-31 Chieftain with Inertial Measurement Unit (IMU) at a flying height of 600 m. Data from four GPS (Global Positioning System) ground stations were used for aircraft trajectory determination. The continuous DTM surface was created by mosaicing and then kriging 1 km2 LiDAR point cloud LAS-formated tiles using Golden Software's Surfer 8 Kriging algorithm. Horizontal accuracy is 11 cm RMSE at 1 sigma and vertical accuracy is 5-30 cm RMSE at 1 sigma. The layer is available in IMAGINE format approx. 4 GB of data. It has a UTM zone 13 projection, with a NAD83 horizonal datum and a NAVD88 vertical datum, with FGDC-compliant metadata. A shaded relief model was also generated. A similar layer, the Digital Surface Model (DSM), is a first-stop elevation layer. Accessory layers consist of index map layers for point cloud tiles and flight lines, each with detailed attribute information such as acquisition date and tile file name. The DTM is available through an unrestricted public license. Other LiDAR DSMs, DTMs, and point cloud data available in this series include snow-on data for 2010. Together, the LiDAR DEMs and point cloud data will be of interest to land managers, scientists, and others for study of topography, snow, ecosystems, and environmental change.
Purpose:
Digital Elevation Models acquired for the Boulder Creek CZO area: 1) take advantage of state-of-the-art remote-sensing technologies to produce baseline geospatial data, 2) benefit education and outreach, 3) promote multi-disciplinary research of environmental change in the Boulder Creek area. The DEMs enable display and analysis of terrain features at high resolution. The DEMs are used as a fundamental layer of information in Geographic Information Systems (GIS) and Spatial Information Decision Support Systems (DSS), and can be used to generate datasets relating to hydrography, slope, aspect, and other features. A number of the priority layers of spatial information recognized by the National Spatial Data Infrastructure may be derived from terrain DEMs, including elevation, hydrography, slope, and aspect.
Supplemental_Information:
Filenaming convention for this dataset is CZOsite_type-of-DEM_study-site-or-date_SnON-or-SnOff.tif. For example, BcCZO_DSM_glv_SnOff.tif.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20100821
Beginning_Time: 15:12:27 GMT
Ending_Date: 20100826
Ending_Time: 0:01:10 GMT
Currentness_Reference: ground condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: Irregular
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -105.716441
East_Bounding_Coordinate: -105.216329
North_Bounding_Coordinate: 40.164253
South_Bounding_Coordinate: 39.909797
Keywords:
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: Cartography
Theme_Keyword: Geodesy
Theme_Keyword: Geography
Theme_Keyword: Hydrography
Theme_Keyword: Mapping
Theme_Keyword: Topography
Theme_Keyword: Remote
Theme_Keyword: Sensing
Theme_Keyword: DEM
Theme_Keyword: DSM
Theme_Keyword: DTM
Theme_Keyword: scan
Theme_Keyword: tiff
Theme_Keyword: digital
Theme_Keyword: elevation
Theme_Keyword: water
Theme_Keyword: LIDAR
Theme_Keyword: point cloud
Theme_Keyword: LAS
Theme_Keyword: Watershed
Theme:
Theme_Keyword_Thesaurus: USGS Enterprise Web Thesaurus
Theme_Keyword: LIDAR images
Theme_Keyword: LIDAR
Theme_Keyword: kriging
Theme_Keyword: watershed management
Theme_Keyword: digital cartographic data
Theme_Keyword: geographic information system (GIS) dataset
Theme_Keyword: geospatial data
Theme_Keyword: elevation maps
Theme_Keyword: topo maps
Theme_Keyword: hydrologic maps
Theme_Keyword: soils
Theme_Keyword: climatology
Theme_Keyword: ecology
Theme_Keyword: petrology
Theme_Keyword: climatic change
Theme_Keyword: ecosystem functions
Theme_Keyword: slope
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: imageryBaseMapsEarthCover
Theme_Keyword: elevation
Theme_Keyword: climatologyMeteorologyAtmosphere
Theme_Keyword: environment
Theme_Keyword: geoscientificInformation
Theme_Keyword: InlandWaters
Place:
Place_Keyword_Thesaurus: Geographic Names Information System
Place_Keyword: United States
Place_Keyword: Colorado
Place_Keyword: Boulder County
Place_Keyword: Critical Zone Observatory
Place_Keyword: Boulder
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: Gordon Gulch
Place_Keyword: Betasso Preserve
Place_Keyword: Green Lakes Valley
Place_Keyword: Como Creek
Place_Keyword: Boulder
Place_Keyword: Boulder Creek
Place_Keyword: Arikaree Glacier
Place_Keyword: Middle Boulder Creek
Place_Keyword: Fourmile Canyon
Place_Keyword: Fourmile Creek
Place_Keyword: Bummer's Gulch
Place_Keyword: Long Gulch
Place_Keyword: Emerson Gulch
Place_Keyword: Schoolhouse Gulch
Place_Keyword: Melvin Gulch
Place_Keyword: Gold Run Creek
Stratum:
Stratum_Keyword_Thesaurus: None
Stratum_Keyword: Terrain
Stratum_Keyword: Earth
Stratum_Keyword: Surface
Stratum_Keyword: Ground
Temporal:
Temporal_Keyword_Thesaurus: None
Temporal_Keyword: August
Temporal_Keyword: Summer
Temporal_Keyword: 2010
Access_Constraints: None
Use_Constraints:
Dataset credit required. All improvements made to original data are not the reponsibility of the Critical Zone Observatory (CZO), the Institute of Arctic and Alpine Research (INSTAAR) or the National Center for Airborne Laser Mapping (NCALM). The user of Boulder Creek CZO data agrees not to resell or redistribute shared data. Use at your own risk. Users assume responsibility to determine the usability of the dataset, as well as dataset resolution and accuracy, for their purposes. It is not recommended that the data be used at a scale larger than source scale.
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Suzanne Prestrud Anderson
Contact_Organization:
University of Colorado, Institute of Arctic Research and Alpine Research (INSTAAR)
Contact_Position: Principal Investigator
Contact_Address:
Address_Type: mailing address
Address: UCB 450
City: Boulder
State_or_Province: Colorado
Postal_Code: 80309-0450
Country: USA
Contact_Electronic_Mail_Address: Suzanne.Anderson@colorado.edu
Data_Set_Credit:
The following acknowledgment should accompany any publication or citation of these data: Logistical support and/or data were provided by the NSF-supported Boulder Creek Critical Zone Observatory and National Center for Airborne Laser Mapping (NCALM). The user of Boulder Creek CZO data agrees to provide proper acknowledgment with each usage of the data. Citation of the name(s) of the investigator(s) responsible for the data set. In addition to the generic statement above, constitute proper acknowledgment. Author(s) (including Boulder Creek CZO investigators) of published material that makes use of previously unpublished Boulder Creek CZO data agree to provide the Boulder Creek CZO data manager with four (4) copies (preferably reprints) of that material for binding as soon as it becomes available.
Native_Data_Set_Environment:
Terrasolid's TerraScan; Optech’s DashMap ver. 5.1; Golden Software's Surfer vs. 8; Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcMap 9.3.1.1850; ESRI ArcCatalog 9.3.1.1850
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
The user of these data should be aware that, while efforts have been taken to ensure that these data are of the highest quality, there is no guarantee of perfection for the data contained herein and the possibility of errors exists. Quality checks were performed throughout all processing procedures. A Quality Assurance/Quality Control (QA/QC) report prepared by the Spatial Analysis lab at the University of California, Merced is included with this data release, see BcCZO_2010_QA_QC_Snow_Off_Report.pdf. Items covered include the quality of pre-processed LiDAR data produced by the National Center for Airborne Laser Mapping (NCALM). Areas of quality covered by the report include completeness of the Lidar data compared to the proposed study area (Area), the average points per square meter for each tile (Point Density), and detailed point density of the entire site (Detailed Point Density), overall point return intensity of the site (Intensity), visual inspection of the hillshade digital elevation model (Hillshade) and the attributes included in the Lidar data. Diminished accuracies are to be expected in areas of extreme terrain and dense vegetation.
Logical_Consistency_Report:
Visual examination and quantitative error assessment were conducted to ensure quality control. A final Quality Control Report (BcCZO_2010_QA_QC_Snow_Off_Report.pdf) is included with the dataset.
Completeness_Report:
1,375 LAS tiles were produced covering an area of 598.92 square kilometers, stretching from the Continental Divide east to Boulder. The tiles were then processed to produce mosaiced Digital Terrain Models (DTMs, Digital Surface Models (DSMs) and hillshades of the DTMs and DSMs.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
11 cm RMSE (1 sigma) or better horizontal accuracy. For more information see BcCZO_2010_Project_Report.pdf and NCALM_2007_WhitePaper.pdf.
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report:
5-30 cm RMSE (1 sigma) or better vertical accuracy. NCALM makes every effort to produce the highest quality LiDAR data possible but every LiDAR point cloud and derived DEM will have visible artifacts if it is examined at a sufficiently fine level. Examples of such artifacts include visible swath edges, corduroy (visible scan lines), and data gaps. NCALM cannot devote the required time to remove all artifacts from data sets, but if researchers find areas with artifacts that impact their applications they should contact NCALM and we will assist them in removing the artifacts to the extent possible – but that this may well involve the PIs devoting additional time and resources to this process. A detailed discussion on the causes of data artifacts and how to recognize them can be found here: GEM_Rep_2005_01_002.pdf, and a discussion of the procedures NCALM uses to ensure data quality can be found here: NCALM_2007_WhitePaper.pdf. For more information see BcCZO_2010_Project_Report.pdf.
Lineage:
Source_Information:
Source_Scale_Denominator: 600 m flying altitude
Type_of_Source_Media: Digital data
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20100810
Beginning_Time: 15:12:27 GMT
Ending_Date: 20100826
Ending_Time: 00:01:10 GMT
Source_Citation_Abbreviation: NCALM, Laser Range Data, 2010
Source_Contribution:
Laser range data acquired with the Optech Gemini Airborne Laser Terrain Mapper (ALTM)
Source_Information:
Source_Scale_Denominator: 600 m flying altitude
Type_of_Source_Media: Digital data
Source_Citation_Abbreviation: NCALM, GPS data, 2010
Source_Contribution: Base station GPS files and airborne GPS files
Source_Information:
Source_Scale_Denominator: 600 m flying altitude
Type_of_Source_Media: Digital data
Source_Citation_Abbreviation: NCALM, IMU flight data, 2010
Source_Contribution: Inertial Measurement Unit during flight data
Source_Information:
Source_Scale_Denominator: 600 m flying altitude
Type_of_Source_Media: Digital data
Source_Citation_Abbreviation: NCALM, LiDAR data strip LAS files, 2010
Source_Contribution:
Input GPS, IMU, Laser Range Data and configuration and calibration file to DashMap to create raw LiDar data output, flight strip LAS files
Source_Information:
Source_Scale_Denominator: 600 m flying altitude
Type_of_Source_Media: Digital Data
Source_Citation_Abbreviation: NCALM, LAS bare-earth and surface, 2011
Source_Contribution: TerraScan filtered (bare-earth) and unfiltered point files
Source_Information:
Source_Scale_Denominator: 600 m flying altitude
Type_of_Source_Media: Digital data
Source_Citation_Abbreviation: NCALM, DEM and hillshades, 2011
Source_Contribution:
Surfer kriging, Perl, Python, and AML scripts to create DEMs and hillshades
Source_Information:
Source_Scale_Denominator: 600 m flying altitude
Type_of_Source_Media: Digital data
Source_Citation_Abbreviation:
INSTAAR, GeoTIFF DEMs, Hillshades, index files and FGDC metadata, 2012
Source_Contribution:
IMAGINE and ArcGIS GRID input to create GeoTIFFs, index shapefiles, and FGDC metadata.
Source_Information:
Source_Scale_Denominator: 600 m flying altitude
Type_of_Source_Media: Digital report
Source_Citation_Abbreviation: Uni of CA, Merced, QA/QC Report, 2011
Source_Contribution:
Quality Assessment and Quality Control (QA/QC) of LiDAR products for Boulder CZO snow-on and snow-off data acquisition
Source_Information:
Source_Scale_Denominator: 600 m flying altitude
Type_of_Source_Media: Digital data
Source_Citation_Abbreviation: INSTAAR, project management, 2011
Source_Contribution:
Project management, QA/QC of delivered data, develop website interface
Source_Information:
Source_Scale_Denominator: 600 m flying altitude
Type_of_Source_Media: Digital data
Source_Citation_Abbreviation: INSTAAR, data management, 2011
Source_Contribution: INSTAAR, project management, 2011
Process_Step:
Process_Description:
For more details see BcCZO_2010_Project_Report.pdf. The LIDAR point cloud data was acquired with an Optech Gemini Airborne Laser Terrain Mapper (ALTM) 06SEN/CON195 and digitizer 08DIG017 system and mounted in a Piper Twin PA-31 Chieftain with tail number N931SA at a flight altitude of 600 meters and a flight speed of 65 meters/second. Swath width is 255.07 m, swath overlap is 50%, point density is 10.28 points/m2, cross-track resolution is 0.254 m and down-track resolution is 0.383 m. Data from four GPS ground stations were used with coordinates relative to the NAD83 (CORS96) Reference Frame. Airplane trajectories for all survey flights are processed using KARS software (Kinematic and Rapid Static, Gerry Mader). GPS, trajectory, and inertial measurement unit (IMU) data collected during the flight were output. The collection was uneventful.
Source_Used_Citation_Abbreviation: NCALM, CZO project LiDAR acquisition, 2010
Process_Date: 20110323
Process_Time: 14203500
Source_Produced_Citation_Abbreviation: NCALM, Laser Range Data, 2010
Source_Produced_Citation_Abbreviation: NCALM, GPS data, 2010
Source_Produced_Citation_Abbreviation: NCALM, IMU flight data, 2010
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Juan Carlos Fernandez
Contact_Organization:
National Center for Airborne Laser Mapping (NCALM), University of Houston
Contact_Position: NCALM Mission Planner / Laser Operator / Electronics Engineer
Contact_Address:
Address_Type: mailing address
Address: Department of Civil and Environmental Engineering
City: Houston
State_or_Province: TX
Country: USA
Contact_Voice_Telephone: 832-842-8884
Contact_Electronic_Mail_Address: jfernan4@Central.UH.EDU
Process_Step:
Process_Description:
For more details see BcCZO_2010_Project_Report.pdf. GPS, trajectory, and inertial measurement unit (IMU) data are input into APPLANIX software POSPac (MMS 5.2) to produce a complete navigation solution, SBET (Smoothed Best Estimated Trajectory). The SBET and raw laser range data were combined using Optech's Dashmap processing program to generate LAS-formated laser point data, stored by flight strip.
Source_Used_Citation_Abbreviation: NCALM, Laser Range Data, 2010
Source_Used_Citation_Abbreviation: NCALM, GPS data, 2010
Source_Used_Citation_Abbreviation: NCALM, IMU flight data, 2010
Source_Produced_Citation_Abbreviation: NCALM, LiDAR data strip LAS files, 2010
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Ionut Iordache
Contact_Organization:
National Center for Airborne Laser Mapping (NCALM), University of California Berkeley
Contact_Address:
Address_Type: mailing address
Address: Department of Earth & Planetary Science
Address: 277 McCone Hall
City: Berkeley
State_or_Province: CA
Postal_Code: 94720
Country: USA
Contact_Voice_Telephone: 510-642-3991
Process_Step:
Process_Description:
For more details see BcCZO_2010_Project_Report.pdf. LiDAR data strip LAS files were filtered to ground and non-ground using TerraScan, surface interpreted to mean vegetation, buildings, rocks, power poles, etc. According to Ionut Iordache, "The LAS point tiles are classified for ground and vegetation. I have used your thresholds [Suzanne Anderson's definition of thresholds] of 2-9m for medium vegetation. But please be aware that this kind of classification does not take into account the structure of the tree, meaning that trees taller than 9m will most likely be defined by points that belong to all 3 classes, with only the top most points being part of the "large vegetation" class. For example, this [using] is a 2m wide profile through the point cloud, color-coded by class type: orange = ground, white = unclassified, light blue = low veg (just a few points visible, right below the bulk of the canopy, 0.5-2.0m above ground), green = medium veg (2.0 - 9.0m above ground), dark green = high veg (> 9.0m above ground). I have used 0.5m as a starting value for the veg classes because the ground classification algorithm is minimum-elevation biased and the interface between ground and non-ground points is not very cleanly defined, especially under canopy. The classification codes used in the LAS files are these: 1 - unclassified, 2 - ground, 3 - low veg, 4 - medium veg, 5 - high veg, 7 - low point (outliers), 9 - high aerial point (outliers >80m above ground), and 10 - isolated points (outliers)." Terrascan processing produced 1,000m x 1,000m tiles named using UTM coordinate values. Use tile index maps to determine location of particular tiles. Initial processing was done by Ionut Iordache and later processing of the Gordon Gulch area was done by Abhinav Singhania.
Source_Used_Citation_Abbreviation: NCALM, LiDAR data strip LAS files, 2010
Source_Produced_Citation_Abbreviation: NCALM, LAS bare-earth and surface, 2011
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Ionut Iordache and Abhinav Singhania
Contact_Organization:
National Center for Airborne Laser Mapping (NCALM), University of California Berkeley
Contact_Address:
Address_Type: mailing address
Address: Department of Earth & Planetary Science
Address: 277 McCone Hall
City: Berkeley
State_or_Province: CA
Postal_Code: 94720
Country: USA
Contact_Voice_Telephone: 510-642-3991
Process_Step:
Process_Description:
For more details see BcCZO_2010_Project_Report.pdf. Terrascan LAS-formated 1 km^2 tiles, both ground (DTM) and non-ground (DSM), were input for interpolation using kriging into Golden Software's Surfer vs 8. Kriged DEMS were output to 1 m posting ESRI GRID-formated DEMs and hillshades and mosaiced from tiles to final output area using Python and Arc Macro Language (AML) scripts. Initial processing was done by Ionut Iordache and later processing of the Gordon Gulch area and then mosaicing into the former dataset was done by Abhinav Singhania.
Source_Used_Citation_Abbreviation: NCALM, LAS bare-earth and surface, 2011
Source_Produced_Citation_Abbreviation: NCALM, DEM and hillshades, 2011
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Ionut Iordache and Abhinav Singhania
Contact_Organization:
National Center for Airborne Laser Mapping (NCALM), University of California Berkeley
Contact_Address:
Address_Type: mailing address
Address: Department of Earth & Planetary Science
Address: 277 McCone Hall
City: Berkeley
State_or_Province: CA
Postal_Code: 94720
Country: USA
Contact_Voice_Telephone: 510-642-3991
Process_Step:
Process_Description:
The QA/QC report includes the quality of pre-processed Lidar data produced by NCALM. Areas of quality covered by this document include completeness of the LiDAR data compared to the proposed study area (Area), the average points per square meter for each tile (Point Density), detailed point density of the entire site (Detailed Point Density), overall point return intensity of the site (Intensity), visual inspection of the hillshade digital elevation model (Hillshade) and the attributes included in the Lidar data.
Source_Used_Citation_Abbreviation: NCALM, LAS bare-earth and surface, 2011
Source_Produced_Citation_Abbreviation: Uni of CA, Merced, QA/QC Report, 2011
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Spatial Analysis Lab
Contact_Address:
Address_Type: mailing address
Address: University of California, Merced
Address: School of Engineering
Address: Facilities Services Building
Address: 5200 N. Lake Road
City: Merced
State_or_Province: CA
Postal_Code: 95343
Country: USA
Contact_Voice_Telephone: 209-228-4411
Contact_Facsimile_Telephone: 209-228-4047
Contact_Electronic_Mail_Address: engineering@ucmerced.edu
Process_Step:
Process_Description:
NCALM data and reports were downloaded and quality-checked by Eric Parrish, Melissa Foster and Abby Langston. Eric coordinated with NCALM staff to obtain corrected data when the Gordon Gulch area was found to be missing. Eric checked data extent and LAS tiles, DEMs and hillshades to be sure that all data was included and that data values looked correct. Eric also added the data to the CZO website for download by scientists and other data-users. Eric organized and managed the dataset so that it could be finalized by INSTAAR staff.
Source_Used_Citation_Abbreviation: NCALM, DEM and hillshades, 2011
Source_Used_Citation_Abbreviation: NCALM, LAS bare-earth and surface, 2011
Source_Produced_Citation_Abbreviation: INSTAAR, project management, 2011
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person:
Eric Parrish, Melissa Foster (PhD candidate) and Abby Langston (Master Student)
Contact_Organization:
University of Colorado, Institute of Arctic and Alpine Research (INSTAAR)
Contact_Position: GIS and Graphics Specialist
Contact_Address:
Address_Type: mailing address
Address: UCB 450
City: Boulder
State_or_Province: CO
Postal_Code: 80309-0450
Country: USA
Process_Step:
Process_Description:
Chi Yang collected all of the data organized by Eric and input it into the CZO database. Chi also created point text files of the LAS tiles, which Eric used to create point shapefiles of the LAS point cloud files.
Source_Used_Citation_Abbreviation: INSTAAR, project management, 2011
Source_Used_Citation_Abbreviation: NCALM, LAS bare-earth and surface, 2011
Source_Produced_Citation_Abbreviation: INSTAAR, data management, 2012
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Chi Yang
Contact_Organization:
University of Colorado, Institute of Arctic and Alpine Research (INSTAAR)
Contact_Position: Data Manager
Contact_Address:
Address_Type: mailing address
Address: UCB 450
City: Boulder
State_or_Province: CO
Postal_Code: 80309-0450
Country: USA
Process_Step:
Process_Description:
Leanne Lestak created value added layers and metadata using ArcMap and ArcCatalog; GeoTIFF DSMs, DTMs, hillshades, index shapefiles and FGDC metadata in .html, .xml and .txt formats. The geoTIF standard is more readily recognized by software packages and easier to use than ESRI GRID-formated files. Leanne organized the data for ease-of-use and fully documented all files with FGDC standard metadata. DSMs are composed of 4 tiles, labelled by area served, bld = Boulder, bt = Betasso, gg = Gordon Gulch and glc = Green Lakes Valley. The DTM is one IMAGINE file. Hillshades follow DSM and DTM tiling schema. Leanne worked with Chris Crosby, the Open Topography project manager to facilitate posting of the data to Open Topograhphy.
Source_Used_Citation_Abbreviation: INSTAAR, data management, 2011
Source_Used_Citation_Abbreviation: NCALM, LAS bare-earth and surface, 2011
Source_Produced_Citation_Abbreviation:
INSTAAR, GeoTIFF DEMs, Hillshades, index files and FGDC metadata, 2012
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Leanne Lestak
Contact_Organization:
University of Colorado, Institute of Arctic and Alpine Research (INSTAAR)
Contact_Position: GIS/Remote Sensing Specialist
Contact_Address:
Address_Type: mailing address
Address: UCB 450
City: Boulder
State_or_Province: CO
Postal_Code: 80309-0450
Country: USA
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Raster
Raster_Object_Information:
Raster_Object_Type: Pixel
Row_Count: 13,000 approx.
Column_Count: 18,000 approx.
Vertical_Count: 1
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Grid_Coordinate_System:
Grid_Coordinate_System_Name: Universal Transverse Mercator
Universal_Transverse_Mercator:
UTM_Zone_Number: 13
Transverse_Mercator:
Scale_Factor_at_Central_Meridian: 0.999600
Longitude_of_Central_Meridian: -105.000000
Latitude_of_Projection_Origin: 0.000000
False_Easting: 500000.000000
False_Northing: 0.000000
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: row and column
Coordinate_Representation:
Abscissa_Resolution: 1.000000
Ordinate_Resolution: 1.000000
Planar_Distance_Units: meters
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1983 (CORS96)
Ellipsoid_Name: Geodetic Reference System 80
Semi-major_Axis: 6378137.000000
Denominator_of_Flattening_Ratio: 298.257222
Vertical_Coordinate_System_Definition:
Altitude_System_Definition:
Altitude_Datum_Name: North American Vertical Datum of 1988 (GEOID03)
Altitude_Distance_Units: meters
Altitude_Encoding_Method: Implicit coordinate
Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: Band_1
Entity_Type_Definition: Elevation
Entity_Type_Definition_Source: University of Colorado, INSTAAR
Attribute:
Attribute_Label: Value
Attribute_Definition: Values that represent elevation, ground and non-ground
Attribute_Definition_Source: University of Colorado, INSTAAR
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1576
Range_Domain_Maximum: 4548
Attribute_Units_of_Measure: meters
Attribute_Measurement_Resolution: 1
Beginning_Date_of_Attribute_Values: 20100821
Ending_Date_of_Attribute_Values: 20100826
Attribute:
Attribute_Label: Value
Attribute:
Attribute_Label: Count
Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
Open Topography Facility, San Diego Supercomputer Center, University of California, San Diego
Contact_Address:
Address_Type: mailing and physical address
Address: 9500 Gilman Drive, MC 0505
City: La Jolla
State_or_Province: California
Postal_Code: 92093-0505
Country: USA
Contact_Instructions: www.opentopography.org
Resource_Description: Downloadable Data
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: TIFF
Format_Version_Number: 1
Format_Specification: Digital File
Format_Information_Content: Digital Elevation Models
File_Decompression_Technique: no compression applied
Transfer_Size: 1 GB
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: www.opentopography.org
Available_Time_Period:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20100821
Beginning_Time: 15:12:27 GMT
Ending_Date: 20100826
Ending_Time: 00:01:10 GMT
Metadata_Reference_Information:
Metadata_Date: 20120308
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Leanne Lestak
Contact_Organization:
University of Colorado, Institute of Arctic Research and Alpine Research (INSTAAR)
Contact_Position: Research Assistant
Contact_Address:
Address_Type: mailing address
Address: UCB 450
City: Boulder
State_or_Province: Colorado
Postal_Code: 80309-0450
Country: USA
Contact_Electronic_Mail_Address: Leanne.Lestak@colorado.edu
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
Metadata_Extensions:
Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>
Profile_Name: ESRI Metadata Profile
Generated by mp version 2.9.6 on Thu Mar 08 17:13:14 2012