Date ( Publication )

2011-03-30T17:51:00

Purpose

The purpose of this resource in Lukla is to acquire data on:

- air temperature

- relative humidity

The data collected from stations like this one can provide an overall figure on changes in the climate and also can have important effects on agriculture.

Their interest was immediately appreciated internationally.

For example, the stations are included in the project of Share International CEOP (Co-ordinated Enhanced Obervation Period) World Meteorological Organization (WMO), which periodically collects data on the climate.

Status

Completed

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 )

• air temperature , relative humidity

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

https://geoportal.mountaingenius.org/geonetwork/srv/api/records/ef5dfddb-459f-4b0b-b1d5-722bec40ef6f/attachments/Data%20Usage%20Policy.pdf  

OnLine resource

Himalayas Reference Site Lukla Station  

Himalayas Reference Site

Lukla Station

Hierarchy level

Series

Statement

The station is included in the project of Share International CEOP (Co-ordinated Enhanced Obervation Period) World Meteorological Organization (WMO), which periodically collects data on the climate. The automatic weather stations (AWS) for monitor meteorological conditions are currently included in the SHARE network. An automatic weather station (AWS) is defined as a “meteorological station at which observations are made and transmitted automatically” (WMO, 1992a). In particular, in the framework of the SHARE project for all parameters, the data has been visually checked, looking for extremely and unusual low/high values and/or periods with constant values. 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).At the Lukla AWS the DMA572 Lsi-Lastem Thermohygrometer is mounted on a 2 m pole. It is a probe for measuring air temperature and air relative humidity with replaceable sensitive element for simplify calibration and maintenance. LSI-Lastem supplies a precise and reliable set of probes, suitable for a continuous measurement in severe environments, in presence of deep thermal and hygrometric ranges with high sun radiant heat. An important feature of this set of sensor is that the thermohygrometric sensitive element is easily replaceable, in order to have a simple and rapid ordinary maintenance and avoiding calibration. The Thermohygrometer has supported a considerable improvement, owing to a deep technical and styling development process: a fan ensures a continuos air change around the sensor in order to eliminate temperature fault caused by radiant heat.

Specifications for temperature parameter:

Sensivite element:Pt 100 1/3 DIN-B

Sensivite element replacement: ML3021 Plug-in by connector

Accuracy (Repeatability+Hysteresis): ± 0,1°C (0°C)

Resolution:n.a.

Long term stability: n.a.

Temperature dependence (+6+45°C/11-90%rh): n.a.

Specifications for relative humidity:

Sensivite element: Capacitative

Sensivite element replacement: ML3021 Plug-in by connector

Accuracy (Repeatability+Hysteresis):1,5% (5÷95%, 23°C) - 2% (<5>95%, 23°C)

Resolution: 0,12%

Long term stability: <1% anno/year

Temperature dependence (+6+45°C/11-90%rh):Max +-1.5%

General Specification:

Operating temperature: -40°÷95°C

Temperature dependence (+6+45°C/11-90%rh):

Power supply: 10÷14 Vdc/Vdc

Power consumption: 2 mA

Weight (cable attached):440 gr Weight

gmd:MD_Metadata

File identifier

ef5dfddb-459f-4b0b-b1d5-722bec40ef6f   XML

Metadata language

eng

Character set

UTF8

Parent identifier

340f083b-0fc2-4ae3-8cfd-7f2b71a04d3e

Hierarchy level

Series

Date stamp

2025-02-05T17:36:44

Metadata standard name

ISO 19115:2003/19139

Metadata standard version

1.0