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Metadata provide information about the identification, the extent,
the quality, the spatial and temporal schema, spatial reference,
and distribution of digital geographic data.
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Sulfur Exafluoride

Sulfur Hexafluoride is measured by using a GC-ECD (Agilent 6890N); separation is performed on a double column system (precolumn/backflush and analytical column, both Hayesep Q), isothemrically. Each run is 15 minute long. Each ambient air sample is bracketed with calibration runs. The working standards are based on NOAA2006 scale.

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Aerosol scattering coefficient

At the Nepal Climate Observatory - Pyramid, aerosol total and back scattering coefficients at three wavelengths (450, 550 and 700 nm) are derived by an integrating nephelometer (model TSI 3563).

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Halogenated gases

25 Halocarbons[pptv] relevant for climate issues will be analysed in grab samples collected weekly. The following compounds are currently observed and analysed : - Halons H-1301, H-1211 - CFCs: CFC-11, CFC-12, CFC-113, CFC-114, CFC-115 - HCFCs: HCFC-22, HCFC-141b, HCFC-142b, HCFC-124 -CH3Cl, CH3Br, CH3I, CH2Cl2, CHCl3, CH3CCl3,CCl4, TCE, PCE -HFCs:HFC-134a, HFC-152a, HFC-125

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Meteorological Parameters

From 1996, an integrated weather station IRDAM WST700 measuresc meteorological data (temperature, relative humidity and atmospheric pressure) at the Italian Climate Observatory “O. Vittori” (ICO-OV).

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Meteorological sensors

A new embedded-transportable monitoring system (SHARE-BOX), specifically designed to perform atmospheric observations in remote regions, has been deployed at Askole from 20th August to 10th November 2012. The system was equipped with an automated weather station (Vaisala WXT520).

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Surface ozone

Continuous surface ozone measurements are conducted since 1996 within the Global Atmospheric Watch (GAW) programme of the World Meteorological Organization.

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Equivalent black carbon

Black carbon was measured from July 2005 till February 2007 by using a Particle Soot Absorption Photometer (PSAP).

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Aerosol size distribution

Measurements of aerosol-size distributions at the NCO-P (or Nepal Climate Observatory at Pyramid) site were continuously performed by using the scanning mobility particles sizer (SMPS) technique.

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Air Temperature

The station is equipped with a probe Temperature and Relative Humidity (Rotronic MP101A-T4-W4W ).

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Lukla (Khumbu Valley, Himalaya - Nepal)

To Lukla is the first of four major stations to detect climate established by the Ev-K2-CNR along the axis that runs from south to north, towards Everest. The AWS takes measurements of 7 standards parameters: air temperature, relative humidity, atmospheric pressure, wind speed and direction, global radiation and total precipitation. The Lukla station was installed on September 2002. On 2004, the AWS has been implemented to include sensors for the determination of soil parameters (temperature, water content, thermal flux), snow level and shortwave/longwave albedo.

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