Date ( Publication )

2011-03-30T17:51:00

Purpose

The PTB330 Barometer (Vaisala) measures : Atmospheric pressure[hPa]. 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 )

• Atmospheric pressure

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 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/8dbe9a62-ea42-4113-b31b-505fe68bea25/attachments/Data%20Usage%20Policy.pdf  

Hierarchy level

Series

Statement

The operating principle on the basis of its work is that when the pressure changes, the silicon diaphragm bends and changes theheight of the vacuum gap in the sensor.

This changes the capacitance of the sensor, which is measured and converted into a pressure reading.

Technical characteristics:

Range: 50 to 1100 hPa

Accuracy at +20 °C (serial output): ±0.30 hPa

Total accuracy at -40 to +60 °C (serial output): ±0.45

Accuracy for 50 to 1100 hPa (analog output): ±0.40 hPa at +20 °C; ±0.75 hPa between -40/+60

Temperature dependence : ±0.3 hPa

Long-term stability: ±0.2 hPa/year

Both in 2008 and in 2011 expedition a PTB330 barometer was installed at South Col.

gmd:MD_Metadata

File identifier

8dbe9a62-ea42-4113-b31b-505fe68bea25   XML

Metadata language

eng

Character set

UTF8

Parent identifier

40f5a84c-83a4-4483-a083-b3431d3ffccd

Hierarchy level

Series

Date stamp

2025-02-05T12:36:46

Metadata standard name

ISO 19115:2003/19139

Metadata standard version

1.0