bd52a4cf-d9a0-402e-b57b-1c9bcb593b76 eng 5f448357-08b6-4d45-b57a-4fc36f721d02 Ev-K2-CNR +39 035 3230511 +39 035 3230551 Via San Bernardino 145 Bergamo BG 24126 Italy metadata@evk2cnr.org http://www.evk2cnr.org 2025-02-24T08:53:53 ISO 19115:2003/19139 1.0 1 WGS 84 (EPSG:4326) EPSG 7.4 Namche Air Temperature 2011-05-20T03:00:00 In the Khumbu Valley, in the area of Sagarmatha National Park, a network of 6 Automatic Weather Stations (AWSs) has been installed over the past 10 years. Namche Station is part of the station network of automated measurement stations (AWSs) that were installed in the Eastern Himalayas: the AWSs are located at different altitudes, over a stretch oriented approximately 40 km south to north. The network takes hourly measurements of seven standard parameters: temperature, relative humidity, atmospheric pressure, wind speed and direction, global radiation, total precipitation. 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. Ev-K2-CNR +39 035 3230511 +39 035 3230551 Via San Bernardino 145 Bergamo BG 24126 Italy evk2cnr@evk2cnr.org http://www.evk2cnr.org/ https://geoportal.mountaingenius.org/geonetwork/srv/api/records/bd52a4cf-d9a0-402e-b57b-1c9bcb593b76/attachments/evk2cnr__.png https://geoportal.mountaingenius.org/geonetwork/srv/api/records/bd52a4cf-d9a0-402e-b57b-1c9bcb593b76/attachments/evk2cnr__.png evk2cnr__.png thermal power plant GEMET SHARE Network Station High Altitude CEOP No conditions apply eng climatologyMeteorologyAtmosphere -180 180 -90 90 http://www.eol.ucar.edu/projects/ceop/dm/insitu/sites/ceop_ap/Himalayas/Namche/ Himalayas Reference Site Namche Station https://geoportal.mountaingenius.org/geonetwork/srv/api/records/bd52a4cf-d9a0-402e-b57b-1c9bcb593b76/attachments/Data%20Usage%20Policy.pdf WWW:DOWNLOAD-1.0-http--download 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 No conditions apply