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MV005 – Simplified metadata

← Back to MV005 detail

Dataset

Database Code
MV005
Title
Meteorological data from the Discovery Tree at the Andrews Experimental Forest, 2015 to present
Abstract
The upper-canopy of forests is known to experience a very different leaf wetness than the rest of the forest: it is often simultaneously brighter, hotter, windier, and drier. The upper canopy also contains most of the leaf area, and because it absorbs most of the solar radiation, it accounts for the great majority of carbon and water exchanges in most forests. Critically, this is also the zone where most climate variations and stress likely manifest. The upper canopy is also the region of the forest that is sampled by satellite imagery. Intensive canopy microclimate monitoring provides connections to satellite-based imagery at varying temporal and spatial scales in order to scale across the Andrews landscape and improves our understanding of forest function and its response to climate change. A 50 meter old growth tree, called the Discovery Tree, was instrumented with various sensors. A thermal infrared camera was installed in March 2014, which collects surface temperatures of the old-growth forest and the adjacent secondary-growth forest. Since then, the scope of information being acquired in real-time has increased to include temperature, leaf wetness, relative humidity, soil temperature, soil moisture, wind direction and speed. This suite of data serves as a glimpse into the canopy and soil processes we are unaware of when our feet are planted firmly on the ground. These measurements complement and leverage ongoing, long-term climate measurements collected in the sub-canopy and at the climate stations located across the Andrews forest, and potentially link with Lidar data on canopy structure and planned soil moisture measurements. Canopy thermal imaging and microclimate measurements have been established for ecophysiological applications such as monitoring the response of forest tree canopies to climate variations, including heat and drought stress.
Keywords
relative humidity; microclimate; wind direction; wind speed; air temperature; soil temperature; soil moisture
Date begin
2015-10-01
Date end
2023-03-15
Principal Investigator
Christopher J. Still

Entities

  1. Air temperature
  2. Dewpoint temperature
  3. Relative humidity
  4. Saturated vapor pressure at air temperature and dewpoint temperature
  5. Water vapor pressure deficit
  6. Leaf wetness
  7. Wind speed and direction from sonic anemometer
  8. Soil temperature
  9. Soil water content

1. Air temperature - Attribute list

Air temperature - attributes
Attribute Type Domain Minimum Maximum Unit
DBCODE varchar enum
ENTITY numeric(1) range 1.0000 1.0000 number
SITECODE varchar enum
PROBE_HT numeric(1) range 1.5000 56.0000 meters
PROBE_CODE varchar enum
DATE_TIME datetime freetext
AIRTEMP_MEAN numeric(1) range -20.0000 50.0000 degrees Celsius
AIRTEMP_MEAN_FLAG varchar enum

2. Dewpoint temperature - Attribute list

Dewpoint temperature - attributes
Attribute Type Domain Minimum Maximum Unit
DBCODE varchar enum
ENTITY numeric(1) range 2.0000 2.0000 number
SITECODE varchar enum
PROBE_HT numeric(1) range 1.5000 56.0000 meters
PROBE_CODE varchar enum
DATE_TIME datetime freetext
DEWPT_MEAN numeric(1) range -25.0000 50.0000 degrees Celsius
DEWPT_MEAN_FLAG varchar enum

3. Relative humidity - Attribute list

Relative humidity - attributes
Attribute Type Domain Minimum Maximum Unit
DBCODE varchar enum
ENTITY numeric(1) range 3.0000 3.0000 number
SITECODE varchar enum
PROBE_HT numeric(1) range 1.5000 56.0000 meters
PROBE_CODE varchar enum
DATE_TIME datetime freetext
RELHUM_MEAN numeric(1) range 0.0000 100.0000 percent
RELHUM_MEAN_FLAG varchar enum

4. Saturated vapor pressure at air temperature and dewpoint temperature - Attribute list

Saturated vapor pressure at air temperature and dewpoint temperature - attributes
Attribute Type Domain Minimum Maximum Unit
DBCODE varchar enum
ENTITY numeric(1) range 4.0000 4.0000 number
SITECODE varchar enum
PROBE_HT numeric(1) range 1.5000 56.0000 meters
PROBE_CODE varchar enum
DATE_TIME datetime freetext
SATVAP_MEAN numeric(1) range 0.0000 100.0000 millibars
SATVAPDEW_MEAN numeric(1) range 0.0000 100.0000 millibars
SATVAP_MEAN_FLAG varchar enum
SATVAPDEW_MEAN_FLAG varchar enum

5. Water vapor pressure deficit - Attribute list

Water vapor pressure deficit - attributes
Attribute Type Domain Minimum Maximum Unit
DBCODE varchar enum
ENTITY numeric(1) range 5.0000 5.0000 number
SITECODE varchar enum
PROBE_HT numeric(1) range 1.5000 56.0000 meters
PROBE_CODE varchar enum
DATE_TIME datetime freetext
VPD_MEAN numeric(1) range 0.0000 100.0000 millibars
VPD_MEAN_FLAG varchar enum

6. Leaf wetness - Attribute list

Leaf wetness - attributes
Attribute Type Domain Minimum Maximum Unit
DBCODE varchar enum
ENTITY numeric(1) range 6.0000 6.0000 number
SITECODE varchar enum
PROBE_HT numeric(1) range 1.5000 56.0000 meters
PROBE_CODE varchar enum
DATE_TIME datetime freetext
LEAFWET_MEAN numeric(1) range 230.0000 1050.0000 millivolt
LEAFWET_MEAN_FLAG varchar enum

7. Wind speed and direction from sonic anemometer - Attribute list

Wind speed and direction from sonic anemometer - attributes
Attribute Type Domain Minimum Maximum Unit
DBCODE varchar enum
ENTITY numeric(1) range 7.0000 7.0000 number
SITECODE varchar enum
PROBE_HT numeric(1) range 1.5000 56.0000 meters
PROBE_CODE varchar enum
DATE_TIME datetime freetext
WDIR_MEAN numeric(1) range 0.0000 360.0000 degrees azimuth
WDIR_STDDEV numeric(1) range 0.0000 360.0000 degrees azimuth
WSPD_MEAN numeric(1) range 0.0000 50.0000 meters per second
WDIR_MEAN_FLAG varchar enum
WDIR_STDDEV_FLAG varchar enum
WSPD_MEAN_FLAG varchar enum

8. Soil temperature - Attribute list

Soil temperature - attributes
Attribute Type Domain Minimum Maximum Unit
DBCODE varchar enum
ENTITY numeric(1) range 8.0000 8.0000 number
SITECODE varchar enum
PROBE_DEPTH numeric(1) range 10.0000 100.0000 centimeters
PROBE_CODE varchar enum
DATE_TIME datetime freetext
SOILTEMP_MEAN numeric(1) range -10.0000 30.0000 degrees Celsius
SOILTEMP_MEAN_FLAG varchar enum

9. Soil water content - Attribute list

Soil water content - attributes
Attribute Type Domain Minimum Maximum Unit
DBCODE varchar enum
ENTITY numeric(1) range 9.0000 9.0000 number
SITECODE varchar enum
PROBE_DEPTH numeric(1) range 10.0000 100.0000 centimeters
PROBE_CODE varchar enum
DATE_TIME datetime freetext
SOILWC_MEAN numeric(1) range 0.0000 1.0000 percent
SOILWC_MEAN_FLAG varchar enum

Attribute definitions

AIRTEMP_MEAN
Air Temperature
AIRTEMP_MEAN_FLAG
Air Temperature flag value
DATE_TIME
Date and time in Pacific Standard Time (PST) of sensor reading
DBCODE
FSDB Database Code
DEWPT_MEAN
Dewpoint temperature
DEWPT_MEAN_FLAG
Dewpoint temperature flag
ENTITY
Entity number
LEAFWET_MEAN
Leaf wetness
LEAFWET_MEAN_FLAG
Leaf wetness flag
PROBE_CODE
Probe number code indicates the measurement type, site, and sensor number
PROBE_DEPTH
Depth of probe in the soil from ground surface
PROBE_HT
Height of the proble on the Discovery Tree
RELHUM_MEAN
Relative humidity
RELHUM_MEAN_FLAG
Relative humidity flag
SATVAPDEW_MEAN
Saturated vapor pressure at dewpoint temperature
SATVAPDEW_MEAN_FLAG
Saturated vapor pressure at dewpoint temperature flag
SATVAP_MEAN
Saturated vapor pressure
SATVAP_MEAN_FLAG
Saturated vapor pressure flag
SITECODE
Site Code
SOILTEMP_MEAN
Soil temperature
SOILTEMP_MEAN_FLAG
Soil temperature flag
SOILWC_MEAN
Soil water content
SOILWC_MEAN_FLAG
Soil water content flag
VPD_MEAN
Vapor pressure deficit
VPD_MEAN_FLAG
Vapor pressure deficit flag
WDIR_MEAN
Wind direction
WDIR_MEAN_FLAG
Wind direction flag
WDIR_STDDEV
Standard deviation of wind direction
WDIR_STDDEV_FLAG
Standard deviation of wind direction flag
WSPD_MEAN
Wind speed
WSPD_MEAN_FLAG
Wind speed flag

Enumerated domains

Enumerated domain for attribute: DBCODE

Codes for DBCODE
Code Description
MV005 FSDB Database Database Code

Enumerated domain for attribute: SITECODE

Codes for SITECODE
Code Description
DSCMET Discovery Tree Meteorological Station (tree tower)

Enumerated domain for attribute: PROBE_CODE

Codes for PROBE_CODE
Code Description
AIRDSC01 Air temperature on Discovery Tree (DSCMET), probe no. 01 at height 1.5 m on tree
AIRDSC02 Air temperature on Discovery Tree (DSCMET), probe no. 02 at height 10 m on tree
AIRDSC03 Air temperature on Discovery Tree (DSCMET), probe no. 03 at height 20 m on tree
AIRDSC04 Air temperature on Discovery Tree (DSCMET), probe no. 04 at height 30 m on tree
AIRDSC05 Air temperature on Discovery Tree (DSCMET), probe no. 05 at height 40 m on tree
AIRDSC06 Air temperature on Discovery Tree (DSCMET), probe no. 06 at height 56 m on tree
DEWDSC01 Dewpoint temperature on Discovery Tree (DSCMET), probe no. 01 at height 1.5 m on tree
DEWDSC06 Dewpoint temperature on Discovery Tree (DSCMET), probe no. 06 at height 56 m on tree
RELDSC01 Relative humidity on Discovery Tree (DSCMET), probe no. 01 at height 1.5 m on tree
RELDSC06 Relative humidity on Discovery Tree (DSCMET), probe no. 06 at height 56 m on tree
SVPDSC01 Saturated vapor pressure on air temperature and dewpoint temperature at Discovery Tree (DSCMET), probe no. 01 at height 1.5 m on tree
SVPDSC06 Saturated vapor pressure on air temperature and dewpoint temperature at Discovery Tree (DSCMET), probe no. 06 at height 56 m on tree
LFWDSC01 Leaf wetness on Discovery Tree (DSCMET), probe no. 01 at height 1.5 m on tree
LFWDSC02 Leaf wetness on Discovery Tree (DSCMET), probe no. 02 at height 10 m on tree
LFWDSC03 Leaf wetness on Discovery Tree (DSCMET), probe no. 03 at height 20 m on tree
LFWDSC04 Leaf wetness on Discovery Tree (DSCMET), probe no. 04 at height 30 m on tree
LFWDSC05 Leaf wetness on Discovery Tree (DSCMET), probe no. 05 at height 40 m on tree
LFWDSC06 Leaf wetness on Discovery Tree (DSCMET), probe no. 06 at height 56 m on tree
VPDDSC01 Water vapor pressure deficit on Discovery Tree (DSCMET), probe no. 01 at height 1.5 m on tree
VPDDSC06 Water vapor pressure deficit on Discovery Tree (DSCMET), probe no. 06 at height 56 m on tree
WNDDSC01 Dew Point Temperature at Discovery Tree (DSCMET), probe no. 01 at height 1.5 m on tree
WNDDSC06 Dew Point Temperature at Discovery Tree (DSCMET), probe no. 06 at height 56 m on tree
SOIDSC01 Soil temperature near Discovery Tree (DSCMET), probe no. 01 at depth 10 cm below ground
SOIDSC02 Soil temperature near Discovery Tree (DSCMET), probe no. 02 at depth 20 cm below ground
SOIDSC03 Soil temperature near Discovery Tree (DSCMET), probe no. 03 at depth 50 cm below ground
SOIDSC04 Soil temperature near Discovery Tree (DSCMET), probe no. 04 at depth 100 cm below ground
SWCDSC01 Soil water content near Discovery Tree (DSCMET), probe no. 01 at depth 10 cm below ground
SWCDSC02 Soil water content near Discovery Tree (DSCMET), probe no. 02 at depth 20 cm below ground
SWCDSC03 Soil water content near Discovery Tree (DSCMET), probe no. 03 at depth 50 cm below ground
SWCDSC04 Soil water content near Discovery Tree (DSCMET), probe no. 04 at depth 100 cm below ground

Enumerated domain for attribute: AIRTEMP_MEAN_FLAG

Codes for AIRTEMP_MEAN_FLAG
Code Description
A Accepted value
M Missing value
Q Questionable value

Enumerated domain for attribute: DEWPT_MEAN_FLAG

Codes for DEWPT_MEAN_FLAG
Code Description
A Accepted value
M Missing value
Q Questionable value

Enumerated domain for attribute: RELHUM_MEAN_FLAG

Codes for RELHUM_MEAN_FLAG
Code Description
A Accepted value
M Missing value
Q Questionable value

Enumerated domain for attribute: SATVAP_MEAN_FLAG

Codes for SATVAP_MEAN_FLAG
Code Description
A Accepted value
M Missing value
Q Questionable value

Enumerated domain for attribute: SATVAPDEW_MEAN_FLAG

Codes for SATVAPDEW_MEAN_FLAG
Code Description
A Accepted value
M Missing value
Q Questionable value

Enumerated domain for attribute: VPD_MEAN_FLAG

Codes for VPD_MEAN_FLAG
Code Description
A Accepted value
M Missing value
Q Questionable value

Enumerated domain for attribute: LEAFWET_MEAN_FLAG

Codes for LEAFWET_MEAN_FLAG
Code Description
A Accepted value
M Missing value
Q Questionable value

Enumerated domain for attribute: WDIR_MEAN_FLAG

Codes for WDIR_MEAN_FLAG
Code Description
A Accepted value
M Missing value
Q Questionable value

Enumerated domain for attribute: WDIR_STDDEV_FLAG

Codes for WDIR_STDDEV_FLAG
Code Description
A Accepted value
M Missing value
Q Questionable value

Enumerated domain for attribute: WSPD_MEAN_FLAG

Codes for WSPD_MEAN_FLAG
Code Description
A Accepted value
M Missing value
Q Questionable value

Enumerated domain for attribute: SOILTEMP_MEAN_FLAG

Codes for SOILTEMP_MEAN_FLAG
Code Description
A Accepted value
M Missing value
Q Questionable value

Enumerated domain for attribute: SOILWC_MEAN_FLAG

Codes for SOILWC_MEAN_FLAG
Code Description
A Accepted value
M Missing value
Q Questionable value