Arctic Fine Mesh Data for Area A (LCP) and Area B (HCP)

  Source DEM 2013 LiDAR (0.25m) tif subsets and polygon vertices.
  Sent by Lauren Charsley-Groffman lcg@lanl.gov EES-14
  Data in NAD_1983_UTM_Zone_4N

  Gallery of all images: gallery.html

  Method for extracting DEM data from tif file: ARCtools.html

  Source GIS Data for Area A

  2013DEM_AreaA.tif (Nov 21 2016)

  From Richard Middleton (Nov 28 2016)
  2013DEM_AreaA.txt ARCtools raster-> x,y,z points

  DEM GRID: 808x836=675488 points at .25 spacing
  Left/Bot  (llcorner):   585455.25   7910354.50 
  Right/Top (urcorner):   585657.25   7910563.50 

  DEM POINTS for MESH:
  min XY:     585455.375  7910354.625 (DEM extents +.125)
  max XY:     585657.125  7910563.375 (DEM extents -.125) 

  TRANSLATION POINT to ZERO:
  define XMIN  585455.25   
  define YMIN 7910354.50  

  Expanded area from Lauren lcg@lanl.gov (Nov 16 2017)
  2013DEM_AreaA_v2.txt ARCtools raster-> x,y,z points

  Local: /scratch/sft/tam/grid_gen/arctic/data/2013_DEM_Barrow/area_a

  Area A Polygon #1 (Oct 27 2016)

  1 585569.6990 7910373.5130 5.2220
  2 585548.4881 7910375.9030 5.2478
  3 585547.4425 7910361.2644 5.2874
  4 585559.8404 7910357.2314 5.1811
  5 585571.6408 7910363.5050 5.2008

  Area A Polygon #2 (Nov 28 2016)

  1 585570.7864 7910507.073 5.190
  2 585590.3656 7910502.84  5.120
  3 585601.7427 7910484.319 5.090
  4 585582.905  7910462.638 5.250
  5 585575.0197 7910471.883 5.190
  6 585562.3197 7910474.0   5.110
  7 585558.6155 7910493.05  5.110

  Remove point 5 to make straight edge

  Area A Polygon #3 (Nov 14 2017)

  1 585479.7087  7910383.5376 5.130
  2 585495.6457  7910374.9524 5.120
  3 585502.9951  7910368.5486 5.090
  4 585490.5030  7910356.2947 5.130
  5 585473.74301 7910361.6562 5.080
  6 585471.9445  7910372.5171 5.050

  Area A Polygon #4 (Nov 14 2017)

  1 585494.7389 7910480.8304 5.080
  2 585493.6992 7910464.5087 5.100
  3 585474.9192 7910461.4564 5.140
  4 585468.6370 7910470.2261 5.180
  5 585477.3565 7910483.5061 5.230

  Area A Polygon #5 (Nov 14 2017)

  1 585595.8419 7910569.6728 4.890
  2 585600.2470 7910567.1013 4.970
  3 585608.2103 7910548.1480 5.110
  4 585608.7697 7910536.0533 4.990
  5 585606.5898 7910528.7351 5.130
  6 585592.8268 7910531.0366 4.980
  7 585580.5286 7910537.0556 4.870
  8 585582.4987 7910548.7114 4.940
  9 585587.3759 7910561.0473 4.880

  Source
  AreaB_QGIS_clip.tif (Nov 3 2016)

  From Lauren Charsley-Groffman (Dec 19 2016)
  2013DEM_AreaB.png image of data
  2013DEM_AreaB_about.txt data descriptin with extents 
  2013DEM_AreaB_xyz.txt ARCtools raster-> x,y,z points 
  2013DEM_AreaB.txt reformat point data, precision fix 

  DEM GRID: 869 * 874 = 759506 points at .25 spacing
  Left/Bot  (llcorner):   585725.75   7910149.25 
  Right/Top (urcorner):   585943.00   7910367.75 

  DEM POINTS for MESH:
  min XY:    585725.875  7910149.375 (DEM extents +.125)
  max XY:    585942.875  7910367.625 (DEM extents -.125)

  TRANSLATION POINT to ZERO:
  define XMIN  585725.75 
  define YMIN 7910149.25 

  Local: /scratch/sft/tam/grid_gen/arctic/data/2013_DEM_Barrow/area_b

  Corrected from non-centered data:
  min XY:    585726.00   7910149.25
  max XY:    585942.75   7910367.25

  Source 
  Polygon_HCP_areaB_nodes.txt (Oct 27 2016)

  1 585828.3017 7910249.9348 5.0791
  2 585840.6016 7910258.9466 5.0466
  3 585853.5104 7910247.6210 5.0969
  4 585847.1778 7910235.4429 5.1341
  5 585833.7819 7910234.2250 5.1177