Dew Point Temperature Sites

Site Maps

Central Met Station
WS#2 Climatic Station
Hi-15 Met Station
Primary Met Station
Upper Lookout Met Station
Vanilla Leaf Met Station

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CENMET (Dew Point Temperature)

Site description: Clearcut Nov 1986, natural regeneration

Latitude: 44-14-36 Longitude: 122- 8-30 Elevation (MSL): 1018 meters

Aspect: 260 degrees Slope: 12 degrees

Measurement period: 19950823 - Present

Comments:

Daily Variables:
23 Aug 1995 to Present:
Mean, min, max, daily dewpoint temperature
Time of max, time of min

Fine Resolution Variables:
23 Aug 1995 to Present:
Mean hourly dewpoint temperature

Sensor height: 150 cm (probe 04)
450 cm (probe 01)

Notes: Dewpoint values are calculated from air temperature
and relative humidity probes.

PROBE 01:

Resolution - Hourly : 19950823 - Present
Height/depth - 450 cm: 19950823 - Present
Type of instrument/method - DEW_CALC: 19950823 - Present

PROBE 04:

Resolution - Hourly : 19950823 - Present
Height/depth - 150 cm: 19950823 - Present
Type of instrument/method - DEW_CALC: 19950823 - Present

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CS2MET (Dew Point Temperature)

Site description: Old growth opening, tight canopy

Latitude: 44-12-54 Longitude: 122-14-57 Elevation (MSL): 485 meters

Aspect: 355 degrees Slope: 5 degrees

Measurement period: 19980414 - Present

Comments:

Daily Variables:
14 Apr 1998 to Present:
Mean, min, max, daily dewpoint temperature
Time of max, time of min

Fine Resolution Variables:
14 Apr 1998 to Present:
Mean hourly dewpoint temperature

Sensor height: 150 cm (probe 02)

Notes: Dewpoint values are calculated from air temperature
and relative humidity probes.

PROBE 02:

Resolution - Hourly : 19980414 - Present
Height/depth - 150 cm: 19980414 - Present
Type of instrument/method - DEW_CALC: 19980414 - Present

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H15MET (Dew Point Temperature)

Site description: Old-growth opening/Road junction

Latitude: 44-15-51 Longitude: 122-10-26 Elevation (MSL): 922 meters

Aspect: 240 degrees Slope: 15 degrees

Measurement period: 19930210 - Present

Comments:

Daily Variables:
10 Feb 1993 to Present:
Mean, min, max, daily dewpoint temperature
Time of max, time of min

Fine Resolution Variables:
10 Feb 1993 to Present:
Mean hourly dewpoint temperature

Sensor height: 480 cm (original height of both sets of temp/rh sensors)
150, 450 cm (two distinct heights established 30 Nov 1993)

Notes: Two dewpoint values are calculated from two separate
pairs of air temperature and relative humidity probes.
CR10, samples every 10 seconds.

PROBE 01:

Resolution - Hourly : 19930210 - Present
Height/depth - 480 cm: 19930210 - 19931129
Height/depth - 450 cm: 19931130 - 19940808
Type of instrument/method - DEW_CALC: 19930210 - Present

PROBE 02:

Resolution - Hourly : 19930210 - Present
Height/depth - 150 cm: 19931130 - 19940808
Type of instrument/method - DEW_CALC: 19930210 - Present

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PRIMET (Dew Point Temperature)

Site description: Maintained clearing

Latitude: 44-12-43 Longitude: 122-15-21 Elevation (MSL): 430 meters

Aspect: - degrees Slope: 0 degrees

Measurement period: 19720510 - Present

Comments:

Daily Variables:
09 May 1972 to 13 Sep 1994:
Mean, max, min daily (midnight to midnight) dew point temperature
Mean, max, min daytime dewpoint temperature
Mean, max, min nighttime dewpoint temperature
Time of max, time of min for daily, daytime, nighttime

13 Sep 1994 to Present:
Mean, max, min daily (midnight to midnight) dew point temperature
Daily time of max, time of min

Fine Resolution Variables:
10 May 1972 to Present:
Mean hourly dew point temperature

Sensor height: 09 May 1972 to 30 May 2000 : 150 cm cotton shelter (probe 05)
04 Jun 1998 to present: 150 cm on tower (probe 04)
30 May 2000 to present: 450 cm on tower (probe 01)

Notes: Before 06 Jul 1988, min and max temperatures were hourly averages,
and the hour with the highest (or lowest ) average temperature was time of max (or min).
After 06 Jul 1988, min and max temperatures are instantaneous, and the
time of min and max are accurate.
Before 06 Jul 1988 a lithium-chloride hygrometer is used. Problems
are noted before 1979. After 06 Jul 1988, dew point is calculated from
temperature and relative himidity sensors located in the 150 cm cotton shelter every 10 seconds (in millibars). Since 04 Jun 1998, an additional probe at 150 cm
on the tower was used to calculate dew point. On 30 May 2000, use of the 150 cm cotton shelter
probe to calculate dew point was discontinued and replaced with use of the 450 cm probe on the
tower.
Daytime and nighttime calculations are discontinued 13 Sep 1994.

PROBE 01:

Resolution - Hourly : 20000530 - Present
Height/depth - 450 cm: 20000530 - Present
Type of instrument/method - DEW_CALC: 20000530 - Present

PROBE 04:

Resolution - Hourly : 19980604 - Present
Height/depth - 150 cm: 19980604 - Present
Type of instrument/method - DEW_CALC: 19980604 - Present

PROBE 05:

Resolution - Hourly : 19720510 - 20000524
Height/depth - 100 cm: 19720509 - 19790306
Height/depth - 150 cm: 19790307 - 19790707
Height/depth - 100 cm: 19790708 - 19791228
Height/depth - 150 cm: 19791229 - 20000524
Type of instrument/method - DEW_CHT1: 19720509 - 19751201
Type of instrument/method - DEW_CHT1: 19751201 - 19790306
Type of instrument/method - DEW_HYG1: 19790306 - 19880706
Type of instrument/method - DEW_CALC: 19880706 - 20000524

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UPLMET (Dew Point Temperature)

Site description: Clearcut 1965

Latitude: 44-12-26 Longitude: 122- 7-10 Elevation (MSL): 1294 meters

Aspect: 72 degrees Slope: 13 degrees

Measurement period: 19941010 - Present

Comments:

Daily Variables:
10 Oct 1994 to Present:
Mean, min, max, daily dewpoint temperature
Time of max, time of min

Fine Resolution Variables:
10 Oct 1994 to Present:
Mean hourly dewpoint temperature

Sensor height: 450 cm (probe 01) installed on 10 Oct 1994
150 cm (probe 04) installed on 29 Aug 1996

Notes: Dewpoint values are calculated from air temperature
and relative humidity probes.

PROBE 01:

Resolution - Hourly : 19941010 - Present
Height/depth - 450 cm: 19941010 - Present
Type of instrument/method - DEW_CALC: 19941010 - Present

PROBE 04:

Resolution - Hourly : 19960829 - Present
Height/depth - 150 cm: 19960829 - 20021024
Height/depth - 450 cm: 20021024 - 20040618
Height/depth - 150 cm: 20040618 - Present
Type of instrument/method - DEW_CALC: 19960829 - Present

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VANMET (Dew Point Temperature)

Site description: Clearcut 1985?

Latitude: 44-16-18 Longitude: 122- 8-58 Elevation (MSL): 1273 meters

Aspect: 180 degrees Slope: 23 degrees

Measurement period: 19930818 - Present

Comments:

Daily Variables:
18 Aug 1993 to Present:
Mean, min, max, daily dewpoint temperature
Time of max, time of min

Fine Resolution Variables:
18 Aug 1993 to Present:
Mean hourly dewpoint temperature

Sensor height: 450 cm, 150 cm (summer of 1994)
Permanent 150 cm probe installed 08 Aug 1996

Notes: Dewpoint values are calculated from air temperature
and relative humidity probes.

PROBE 01:

Resolution - Hourly : 19930818 - Present
Height/depth - 450 cm: 19930818 - 19940718
Height/depth - 150 cm: 19940719 - 19941106
Height/depth - 450 cm: 19941107 - Present
Type of instrument/method - DEW_CALC: 19930818 - Present

PROBE 04:

Resolution - Hourly : 19960828 - Present
Height/depth - 150 cm: 19960828 - Present
Type of instrument/method - DEW_CALC: 19960828 - Present