Date ( Publication )

2011-03-30T17:51:00

Purpose

The purpose of this resource is to acquire data on:

- Soil Heat Flux

Status

Completed

Maintenance and update frequency

As needed

GEMET ( Theme )

• thermal power plant

Keywords

• SHARE , Network , Station , High Altitude

Keywords ( Place )

• Nepal , Lobuche , Khumbu Valley , Sagarmatha National Park

Keywords ( Theme )

• AWS

Keywords ( Theme )

• soil heat flux

Use limitation

No conditions apply

Access constraints

Copyright

Other constraints

Character set

UTF8

Topic category

• Climatology, meteorology, atmosphere
• Environment
• Geoscientific information

Supplemental Information

Reference system identifier

EPSG / WGS 84 (EPSG:4326) / 7.4

Topology level

Geometry only

Geometric object type

Point

Geometric object count

1

OnLine resource

Himalayas Reference Site Pyramid Station  

Himalayas Reference Site Pyramid Station

OnLine resource

https://geoportal.mountaingenius.org/geonetwork/srv/api/records/c4422b76-b108-4c43-81f3-1a3662aa15b8/attachments/Data%20Usage%20Policy.pdf  

OnLine resource

https://geoportal.mountaingenius.org/portal/index.php/data/  

Hierarchy level

Series

Statement

At the Pyramid Laboratory - Observatory the DPE260 Lsi-Lastem Heat flux sensor is installed.

The soil heat flux is the energy that is utilized in heating the soil. This is positive when the soil is warming and negative when the soil is cooling.

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

gmd:MD_Metadata

File identifier

c4422b76-b108-4c43-81f3-1a3662aa15b8   XML

Metadata language

eng

Character set

UTF8

Parent identifier

e37f5932-2761-49b4-a7c3-267c7388db23

Hierarchy level

Series

Date stamp

2025-02-07T16:27:08

Metadata standard name

ISO 19115:2003/19139

Metadata standard version

1.0