b750dcc5-02b1-4ada-849f-2de2c4aaee47 eng 5bc7e332-b614-4cfd-8cb6-3e65da4c4084 Ev-K2-CNR +39 035 3230511 +39 035 3230551 Via San Bernardino 145 Bergamo BG 24126 Italy metadata@evk2cnr.org http://www.evk2cnr.org 2025-02-04T15:26:40 ISO 19115:2003/19139 1.0 13 WGS 1984(EPSG:4326) EPSG 7.4 South Col Relative Humidity 2011-03-30T17:51:00 During the 2011, at South Col was installed 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. The parameters are recorded every ten minutes and data are transmitted hourly to a server at the Pyramid Laboratory-Observatory (5,050 m a.s.l., near Lobuche in Nepal’s Khumbu Valley), and from there to Ev-K2-CNR headquarters in Italy. 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. Ev-K2-CNR +39 035 3230511 +39 035 3230551 Via San Bernardino 145 Bergamo BG 24126 Italy evk2cnr@evk2cnr.org http://www.evk2cnr.org/ Paolo Bonasoni Institute of Atmospheric Sciences and Climate (ISAC) - CNR +39 051 639 9590 +39 051 639 9652 Via Gobetti 101 Bologna BO 40129 Italy p.bonasoni@isac.cnr.it https://geoportal.mountaingenius.org/geonetwork/srv/api/records/b750dcc5-02b1-4ada-849f-2de2c4aaee47/attachments/evk2cnr__.png EVK2CNR thermal power plant GEMET SHARE Network Station High Altitude Nepal Mt. Everest - South Col Himalaya air research pollution ecosystems landscape natural areas climate monsoon subtropical jet stream stratospheric intrusions real time AWS air temperature relative humidity No conditions apply climatologyMeteorologyAtmosphere environment geoscientificInformation 80.0522 88.1946 26.3684 30.4247 https://geoportal.mountaingenius.org/geonetwork/srv/api/records/b750dcc5-02b1-4ada-849f-2de2c4aaee47/attachments/Data%20Usage%20Policy.pdf WWW:DOWNLOAD-1.0-http--download 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 No conditions apply