Date ( Publication )

2011-03-30T17:51:00

Purpose

The DMA 672 thermohygrometers measures :

- Air temperature[°C];

- Relative Humidity[%];

Measurements from this unique meteorological observatory can provide important information for the scientific community for several application, including weather forecasting and study related to the understanding climate change. The South Col station is an important achievement for mountaineering and for science. It is an exceptional point of weather observation, which provides important and unique meteorological data. Integrated within the SHARE network in the Khumbu Valley, comprised of seven stations between 2,660 m (8,727 ft.) and 5,079 m (16,663 ft.), it will surely improve our studies of atmospheric circulation, particularly regarding the exchange of air masses between the troposphere and stratosphere and the thermal gradient.

Status

Completed

Maintenance and update frequency

As needed

GEMET ( Theme )

• thermal power plant

Keywords

• SHARE , Network , Station , High Altitude

Keywords ( Place )

• Nepal , Mt. Everest - South Col , Himalaya

Keywords ( Theme )

• air , research , pollution , ecosystems , landscape , natural areas , climate

Keywords ( Theme )

• monsoon , subtropical jet stream , stratospheric intrusions , real time

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

N

S

E

W

Supplemental Information

Reference system identifier

EPSG / WGS 1984(EPSG:4326) / 7.4

Topology level

Geometry only

Geometric object type

Point

Geometric object count

13

OnLine resource

https://geoportal.mountaingenius.org/geonetwork/srv/api/records/b750dcc5-02b1-4ada-849f-2de2c4aaee47/attachments/Data%20Usage%20Policy.pdf  

Hierarchy level

Series

Statement

In 2008 expedition, at South Col was installed the DMA572 termohygrometer, that was replaced during the 2011 expedition with two DMA672 termohygrometers and one DMA033 thermometer. All these sensors are manufactered by LSI-Lastem (Italy).

DMA 672 thermohygrometer is an instrument for measuring temperature and relative humidity and 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.

Technical characteristics:

Temperature & Relative Humidity

Range: -30 to 70°C 0 to100%

Sensitive element replacement:sensor replacement

Accuracy (Repeatability+ Hysteresis): ±0,1°C (0°C) 1,5% (5 to 95%, 23°C)

Resolution: n.a. 0,12%

Response time (Sens. element): 10 s

Long term stability:

<1°C year <1RH%year

Operating temperature: -50°÷100°C

gmd:MD_Metadata

File identifier

b750dcc5-02b1-4ada-849f-2de2c4aaee47   XML

Metadata language

eng

Character set

UTF8

Parent identifier

5bc7e332-b614-4cfd-8cb6-3e65da4c4084

Hierarchy level

Series

Date stamp

2025-02-04T15:26:40

Metadata standard name

ISO 19115:2003/19139

Metadata standard version

1.0