Date ( Publication )

2011-05-20T03:00:00

Purpose

Meteo-climatic observations in this area are very important for the study of the environmental changes that are affecting this ecosystem, helping the scientific community to improve the prediction of the evolution of this environmental phenomena and modification.

This station is reference point within the CEOP-High Elevation (CEOP-HE) initiative, promoted in order to investigate possible changes of hydrological and energy cycles in high elevation regions and to better elucidate the role of mountains within the climate system from a local to global scales.

Status

Completed

Maintenance and update frequency

As needed

GEMET ( Theme )

• thermal power plant

Keywords

• SHARE , Network , Station , High Altitude

Keywords

• CEOP

Use limitation

No conditions apply

Access constraints

Copyright

Other constraints

Metadata language

eng

Character set

UTF8

Topic category

• Climatology, meteorology, atmosphere

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 Namche Station  

Himalayas Reference Site Namche Station

OnLine resource

https://geoportal.mountaingenius.org/geonetwork/srv/api/records/bd52a4cf-d9a0-402e-b57b-1c9bcb593b76/attachments/Data%20Usage%20Policy.pdf  

Hierarchy level

Series

Statement

WMO (1992) defines air temperature as “the temperature indicated by a thermometer exposed to the air in

a place sheltered from direct solar radiation”. Although this definition cannot be used as the definition of the thermodynamic quantity itself, it is suitable for most applications.

The automatic weather stations (AWS) for monitor meteorological conditions is currently included in the SHARE network. The stations in Nepal and Pakistan are Reference Stations in the CEOP project under the WMO’s World Climate Research Programme (WCRP) – Global Energy and Water cycle Experiment (GEWEX) initiative. Ev-K2-CNR recently founded a special interest group called “CEOP-High Elevation” (CEOP-HE), which is dedicated to understanding multi-scale variability and change in hydrological and energy cycles in high elevation regions and studying their role within the climate system on a local and global scale.

At the Namche AWS the DMA570 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.

For temperature:

Range -30.+70°C

Sensitive element Pt100 1/3 DIN-B

Accuracy ± 0,1°C (0°C)

Hysteresis&Repeatability na

Resolution 0,025°C

Long term stability -0.04% (after 5 years at 200°C)

Calibration uncertainty 0,1°C

Response time (T63) Wind speed 0,3-0,5 m/s: 80sec

Radiation shield efficiency with respect to forced ventilation sensor (wind 0,5m/s, rad.800 W/m2): +0,6°C

gmd:MD_Metadata

File identifier

bd52a4cf-d9a0-402e-b57b-1c9bcb593b76   XML

Metadata language

eng

Character set

UTF8

Parent identifier

5f448357-08b6-4d45-b57a-4fc36f721d02

Hierarchy level

Series

Date stamp

2025-02-24T08:53:53

Metadata standard name

ISO 19115:2003/19139

Metadata standard version

1.0