NEW FILES added 5/6/08

Shape Files: snc_p4_WA.shp, snc_p4_NOR.shp, snc_p4_COR.shp, snc_p4_SOR.shp
shx Files: snc_p4_WA.shx, snc_p4_NOR.shx, snc_p4_COR.shx, snc_p4_SOR.shx
dbf Files: snc_p4_WA.dbf, snc_p4_NOR.dbf, snc_p4_COR.dbf, snc_p4_SOR.dbf

Description of attributes: vector type:area converted from raster layer SNC_V4 (see below) after
rounding expected needle retention (to yrs x 10) at a 4s (ca. 120m) resolution;
split into WA coast (5.8mb zip file), N. OR coast (2.8mb), C. OR coast (3.4mb), and S. OR coast (7.9mb)

FULL EXTENT 5sec reso. ADDED 5/7/08

snc_p4_5sec_all.shp, snc_p4_5sec_all.shx, snc_p4_5sec_all.dbf

Description of attributes: vector type:area converted from raster layer SNC_V4 (see below) after
rounding expected needle retention (to yrs x 10) at a 5s (ca. 150m) resolution;
full OR + WA coast, East to -122:27:45 (17mb zip file)

Datatype: vector

Filetype: shapefile (areas/polygons)

Projection: lat long

datum: NAD83

ellipsoid: wgs72

Region data based on GRD (raster) files:

region data (WA coast):
north: 48:26:12N
south: 46:04:24N
east: 123:01:03W
west: 124:47:39W
cols: 2132
rows: 2836
e-w resol: 0:00:03
n-s resol: 0:00:03

region data (N. OR coast):
north: 46:18:18N
south: 45:02:09N
east: 123W
west: 124:07:27W
cols: 1349
rows: 1523
e-w resol: 0:00:04
n-s resol: 0:00:04

region data (C. OR coast):
north: 45:05:33N
south: 43:47:36N
east: 123:00:03W
west: 124:09:30W
cols: 1389
rows: 1559
e-w resol: 0:00:04
n-s resol: 0:00:04

region data (S. OR coast):
north: 43:49:21N
south: 41:59:57N
east: 123:00:18W
west: 124:40:18W
cols: 2000
rows: 2188
e-w resol: 0:00:04
n-s resol: 0:00:04

region data (full OR+WA coast):
north: 49:19:36N
south: 41:56:12N
east: 122:27:45W
west: 124:55:45W
cols: 5321
rows: 1776
e-w resol: 0:00:05
n-s resol: 0:00:05

Filename: SNC_V4_100
Description: Climate factors model (Revised Apr 2008) of SNC influenced expected
needle retention (yrs); 3 sec (ca 90m) nominal resolution
Datatype: raster

Attributes: Estimated needle retention (rounded to yrs x 100)

Filetype: arc grid (ascii with header)

Projection: lat-long

ellipsoid: wgs72

header data:
ncols 2960
nrows 8868
xllcorner -124.929167
yllcorner 41.936667
cellsize 0.000833
NODATA_value -9999

Region data:
proj: 3
zone: 0
north: 49:19:36N
south: 41:56:12N
east: 122:27:45W
west: 124:55:45W
cols: 2960
rows: 8868
e-w resol: 0:00:03
n-s resol: 0:00:03

if elev>700 then asp36=0.2+ASPECT/7
else if elev>350 then asp36=0.6+ASPECT/3
else if elev<200 then asp36=3.2+ASPECT/3
else asp36=1.6+ASPECT/3

these rules were derived through correlation analysis.
the following GRASS r.mapcalc statement was used for the
calculation:
r.mapcalc "asp36=if(dem90m.nw>700,0.2+aspec.v3/7,if(dem90m.nw>350,0.6+aspec.v3/3,if(dem90m.nw<200,3.2+aspec.v3/3,1.6+aspec.v3/3)))"

Statistics for asp36 were:
Of the non-null cells:
----------------------
n: 26249026
minimum: 0.2
maximum: 3.86667
range: 3.66667
mean: 2.56796
standard deviation: 1.28107
variance: 1.64115
variation coefficient: 49.8867 %

asp36_100 is asp36 x 100 (rounded to integer)

header data asp36_100:
ncols 2960
nrows 8868
xllcorner -124.929167
yllcorner 41.936667
cellsize 0.000833
NODATA_value -9999

region info:
north: 49:19:36N
south: 41:56:12N
east: 122:27:45W
west: 124:55:45W
cols: 2960
rows: 8868
e-w resol: 0:00:03
n-s resol: 0:00:03