SITE: PRIMET
EASTING: 559563
NORTHING: 4895461
ELEV: 430
SLOPE: 0
ASPECT: -
RADIATION REGIME:
J F
M A M
J J A
S O N
D
TOTAL INSOLATION* 2.86 5.37
9.31 14.15 17.18
20.61 22.06 19.79
14.65 7.93 3.56
2.50
% BLKD BY TOPO 0.245
0.190 0.124 0.102
0.100 0.088 0.082
0.081 0.102 0.138
0.211 0.232
% BLKD BY CANOPY 0.010
0.024 0.050 0.049
0.042 0.047 0.046
0.045 0.037 0.032
0.004 0.024
* DIFFUSE &
DIRECT, MJ.m-2.day-1
(INCLUDING CLOUDINESS, TOPOGRAPHY, AND CANOPY)
CANOPY: None overhead, though insolation affected
slightly from trees on adjacent hillsides.
CONTINUOUS, OPEN CANOPY TYPE.
SURFACE: Short grass/dirt, generally clear of vegetation.
SENSOR: Cotton shelter, enclosed sensor (1.5 m). Also a thermister
tower (1.5, 2.5, 3.5, 4.5 m),
but long-term sensor is enclosed one.
GENERAL SITE CHARACTERISTICS:
Level, open MET site at HJA headquarters, one of the long-term benchmark sites
in the HJ Andrews.
Long-term temperature measurements are from an enclosed sensor in a cotton
shelter. Site is close
to Lookout Creek, at the bottom of the valley;
cold-air drainage possibly influences this site.
Little difference between topographic and canopy insolation
blocking, except during winter months.
Trees to north much closer than trees to the south. Along with CS2MET, appears have cooler and
somewhat unusual long-term temperature trends compared
to the rest of the HJ Andrews.
DATES OF OPERATION: 05/70-present
SITE USED IN ANALYSIS?
SITE: CS2MET
EASTING: 560044
NORTHING: 4895780
ELEV: 460
SLOPE: 5
ASPECT: 355
RADIATION REGIME:
J F
M A M
J J A
S O N
D
TOTAL INSOLATION* 1.18 1.76
2.45 4.84 7.19
8.46 8.78 7.70
4.37 1.93 1.26
1.08
% BLKD BY TOPO 0.194
0.129 0.092 0.072
0.071 0.059 0.053
0.055 0.075 0.105
0.157 0.263
% BLKD BY CANOPY 0.537
0.631 0.704 0.625
0.556 0.570 0.575
0.563 0.637 0.705
0.603 0.471
* DIFFUSE
& DIRECT, MJ.m-2.day-1
(INCLUDING CLOUDINESS, TOPOGRAPHY, AND CANOPY)
CANOPY: Closest site to having 45 degree cone overhead. Canopy slightly more open to the east than
other directions.
CONTINUOUS, OPEN CANOPY TYPE.
SURFACE: Tends to be bushy with thick short shrubbery and grass.
SENSOR: 1.3 m thermister, shielded above with
PVC.
GENERAL SITE CHARACTERISTICS:
The longest running site in the HJ Andrews. Surrounded on all sides by thick forest with
tall trees,
located directly in middle of clearing (15-20m from
trees). Located in a clearing up and
across the
main road from Lookout Creek, with cold-air drainage
possibly affecting temperature regime.
Surrounding forest plays a major role in insolation
regime, though site is completely open directly
above. Along
with PRIMET, , appears have cooler and somewhat
unusual long-term temperature trends
compared to the rest of the HJ Andrews.
DATES OF OPERATION: 10/49-present
SITE USED IN ANALYSIS?
SITE: CENMET
EASTING: 586680
NORTHING: 4899065
ELEV: 1018
SLOPE: 12
ASPECT: 260
RADIATION REGIME:
J F
M A M
J J A
S O N
D
TOTAL INSOLATION* 2.95 5.30
9.09 13.92 17.09
20.59 22.21 20.05
14.63 7.74 3.62
2.56
% BLKD BY TOPO 0.114
0.107 0.104 0.093
0.075 0.063 0.061
0.071 0.090 0.102
0.103 0.110
% BLKD BY CANOPY 0.062
0.063 0.050 0.032
0.027 0.028 0.025
0.020 0.030 0.053
0.069 0.067
* DIFFUSE &
DIRECT, MJ.m-2.day-1
(INCLUDING CLOUDINESS, TOPOGRAPHY, AND CANOPY)
CANOPY: None overhead, open site, though insolation
affected slightly from trees on adjacent
hillsides. CONTINUOUS, OPEN CANOPY TYPE.
SURFACE: Short grass, dirt.
SENSOR: 1.5 m thermister, shielded above with PVC, on
thermister tower (1.5, 2.5, 3.5, 4.5 m
sensors).
GENERAL SITE CHARACTERISTICS:
One of the benchmark MET sites. Insolation
topographically blocked to east and southeast, with
closest forest in those directions, on top of
clear-cut hill. This prominent forest
wall
possibly affects temperature regime and wind
patterns. In a large
clear-cut.
DATES OF OPERATION: 08/95-present
SITE USED IN ANALYSIS?
SITE: VANMET
EASTING: 567832
NORTHING: 4902239
ELEV: 1273
SLOPE: 13
ASPECT: 180
RADIATION REGIME:
J F
M A M
J J A
S O N
D
TOTAL INSOLATION* 3.57 6.44 10.75
15.64 18.52 22.08
23.92 22.16 17.23
9.58 4.50 3.15
% BLKD BY TOPO 0.043
0.032 0.032 0.024 0.024 0.020 0.019
0.018 0.021 0.029
0.046 0.053
% BLKD BY CANOPY 0.025
0.030 0.022 0.028
0.019 0.016 0.014
0.020 0.026 0.023
0.016 0.016
* DIFFUSE
& DIRECT, MJ.m-2.day-1
(INCLUDING CLOUDINESS, TOPOGRAPHY, AND CANOPY)
CANOPY: The most open site in the HJ Andrews.
Horizon visible east-south-west. Trees not a
factor for insolation.
SURFACE: Mixed short grass, brush, dirt
SENSOR: 1.5 m thermister, shielded above with PVC, on
thermister tower (1.5, 2.5, 3.5, 4.5 m
sensors).
Recording sensor height varied during operating period between .5 and
2.5 m.
GENERAL SITE CHARACTERISTICS:
One of the benchmark MET sites. On a south-facing slope with horizon fully
visible in that
direction.
Sparse forest begins 20-30 m to the north. In a large clear-cut with an expansive
view.
DATES OF OPERATION: 06/87-present
SITE USED IN ANALYSIS?
SITE: UPLMET
EASTING: 570331
NORTHING: 4895053
ELEV: 1292
SLOPE: 13
ASPECT: 72
RADIATION REGIME:
J F
M A M
J J
A S
O N D
TOTAL INSOLATION* 3.22 5.75
9.73 14.80 17.78
20.61 21.91 20.29
15.23 8.14 4.01
2.77
% BLKD BY TOPO 0.056
0.045 0.049 0.036
0.035 0.031 0.027
0.029 0.036 0.042
0.059 0.065
% BLKD BY CANOPY 0.085
0.075 0.060 0.044
0.049 0.082 0.086
0.050 0.039 0.069
0.062 0.078
* DIFFUSE
& DIRECT, MJ.m-2.day-1
(INCLUDING CLOUDINESS, TOPOGRAPHY, AND CANOPY)
CANOPY: None overhead, open site, though insolation
affected slightly from trees on adjacent
hillsides. CONTINUOUS, OPEN CANOPY TYPE.
SURFACE: Mixed short grass, brush, dirt.
SENSOR: 1.5 m thermister, shielded above with PVC, on
thermister tower (1.5, 2.5, 3.5, 4.5 m
sensors).
GENERAL SITE CHARACTERISTICS:
The highest of the benchmark MET sites. On gentle east-facing slope, with horizon
visible in all
directions, though slight topographic shading to the
southwest in winter. Very open, in a
large
clear-cut.
Presence of young trees growing in clearcut
provides some insolation blockeage;
nearest
forest starts due east 70-80 m. Due to openness and reliability of insolation and temperature
data, this site was used to determine percentages of
diffuse and direct radiation for each month
in the study.
DATES OF OPERATION: 10/94-present
SITE USED IN ANALYSIS?
SITE: H15MET
EASTING: 565859
NORTHING: 4901219
ELEV: 922
SLOPE: 15
ASPECT: 240
RADIATION REGIME:
J
F M A
M J J A
S O N
D
TOTAL INSOLATION* 1.57 2.62
4.40 7.09 9.34 13.46
14.46 10.76 7.49
3.72 1.82 1.39
% BLKD BY TOPO 0.065
0.055 0.055 0.043
0.045 0.045 0.031
0.032 0.040 0.050
0.062 0.074
% BLKD BY CANOPY 0.539
0.580 0.577 0.537
0.483 0.374 0.382
0.505 0.555 0.596
0.573 0.534
* DIFFUSE
& DIRECT, MJ.m-2.day-1
(INCLUDING
CLOUDINESS, TOPOGRAPHY, AND CANOPY)
CANOPY: None directly overhead, but site surrounded by moderate forest.
CONTINUOUS, OPEN CANOPY TYPE.
SURFACE: Gravel and dirt.
SENSOR: 1.5 m thermister, shielded above with
PVC. Recording sensor height varied
during period
of operation between 1.5 m (6 years) and 4.8 m (1.5
years).
GENERAL SITE CHARACTERISTICS:
At the confluence of 2 roads in moderate forest. Site is thus unusual by having large open
areas
radiating out from it through the surrounding
forest. Attenuation is completely by
surrounding
trees, about 20 m from sensor in each direction. More open to direct radiation from the
southwest
for most months (direct sun in the mornings). During June and July site receives direct
radiation
through much of the day but during other months sun is
blocked by forest wall to the south.
DATES OF OPERATION: 03/92-present
SITE USED IN ANALYSIS?