Lukla Soil heat flux sensor

Heat flux sensor is used to measure thermal flux on the ground, i.e. the quantity of energy that passes through the sensor itself. A thermopile, inserted within the heat flux, measures the small temperature difference formed between its two sides, due to thermal resistance. These sensors have direct outputs and are supplied with calibration certificates. The sensor is put 5 cm below the surface. At the Lukla station the DPE260 Lsi-Lastem Heat flux sensor is installed.
 
Citation proposal
(2011) . Lukla Soil heat flux sensor. https://geoportal.mountaingenius.org/geonetwork/srv/api/records/3ee70eb5-bfd7-4d70-a4df-dd6a13076944
 

Identification

Data identification

Citation

Date ( Publication )
2011-03-30T17:51:00
Purpose

The purpose of this sensor is to measure the following parameter:

- soil heat flux

The AWS in Lukla is a reference site in CEOP (Coordinated Energy and water Cycle Observation Project) under the WMO's initiative World Climate Research Programme (WCRP) - Global Energy and Water cycles Experiment (GEWEX).

Status
Completed

  Point of contact

  +39 035 3230551 
Website
http://www.evk2cnr.org/  
Maintenance and update frequency
As needed
Keywords
  • SHARE , Network , Station , High Altitude
Keywords
  • CEOP
Keywords ( Place )
  • Lukla , Nepal , Khumbu Valley , Sagarmatha National Park
Keywords ( Theme )
  • AWS
Keywords ( Theme )
  • soil heat flux

Legal constraints

Use limitation
No conditions apply
Access constraints
Copyright
Other constraints
Character set
UTF8
Topic category
  • Climatology, meteorology, atmosphere
  • Environment
  • Geoscientific information
N
S
E
W


Supplemental Information
 

Quality

Data quality

Scope

Hierarchy level
Series
Other
Instruments: AWS sensors
Statement

At the Lukla station the DPE260 Lsi-Lastem Heat flux sensor is installed. Heat flux sensors are used for measuring thermal flux, i.e. the quantity of energy that passes through the sensor itself. A thermopile, inserted within the heat flux, measures the small temperature difference that forms between its two sides due to thermal resistance. These sensors have direct outputs and are supplied with calibration certificates.

The technical characteristics are:

- Sensitive element: Thermopile

- Measurement range: <2000 Wm-2

- Electric output: 8..14 Wm-2

- Impedance: 400..500 ohm

- Accuracy: 3%

- Non-linearity: <1,5%

- Th.drift (-10+40°): <2%

- Response time (63%): 2min 5 min

- Operative temp: -40°+80°C.

- Therm. Conductivity: 0,5 W/m°C

- Thickness: 7 mm

- Ø total: 50 mm

- Ø active :15mm

- Output cable: 2 mt - Weight (no cable): 50 gr

 

Spatial rep.

Vector spatial representation

Topology level
Geometry only

Geometric objects

Geometric object type
Point
Geometric object count
1
 

Ref. system

Reference system identifier
EPSG / WGS 84 (EPSG:4326) / 7.4
 

Metadata

Metadata

File identifier
3ee70eb5-bfd7-4d70-a4df-dd6a13076944   XML
Metadata language
eng
Character set
UTF8
Parent identifier
156cb588-270c-46a0-99ac-34fc19ab9a83
Hierarchy level
Series
Date stamp
2025-02-21T16:03:57
Metadata standard name
ISO 19115:2003/19139
Metadata standard version
1.0

  Point of contact

  +39 035 3230551 
Website
http://www.evk2cnr.org  
 
 

Md. constraints

Use limitation
No conditions apply
 

Md. maintenance

Maintenance information

Maintenance and update frequency
As needed
Update scope
Series
 

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