Sun Photometer

At the end of March 2006 a Cimel CE-318 sunphotometer was installed at The Nepal Climate Observatory - Pyramid (NCO-P) within the framework of the Aerosol Robotic Network, AERONET (http://aeronet.gsfc.nasa.gov, EvK2-CNR site). It provides a characterization of aerosol optical and microphysical properties of the air column above the station.

Citation proposal
(2011) . Sun Photometer. https://geoportal.mountaingenius.org/geonetwork/srv/api/records/332e244e-3eb5-42be-a364-bcf759a69b94

Simple

Date ( Publication ): 2011-04-01T19:01:00

Purpose: Cimel CE 318 sun photometer is an automatic sun-tracking and sky radiometer for measuring the optical depth at 8 wavelengths between 340 and 1020 nm. This instrument is part of the AERONET project, as number 367.

Status: Completed

Point of contact

Ev-K2-CNR - ( )

Via San Bernardino 145 Bergamo BG 24126 Italy

+39 035 3230511

+39 035 3230551

Website: http://www.evk2cnr.org/

Point of contact

Institute of Atmospheric Sciences and Climate (ISAC) - CNR - Paolo Bonasoni ( )

Via Gobetti 101 Bologna BO 40129 Italy

+39 051 639 9590

+39 051 639 9652

Principal investigator

Institute of Atmospheric Sciences and Climate (ISAC) National Research Council - Gian Paolo Gobbi ( )

Via Fosso del Cavaliere, 100 Roma 00133 Italy

+39 06 49934343

+39 06 20660291

Maintenance and update frequency: As needed

Keywords

SHARE , Network , Station , High Altitude

Keywords

WMO , GAW , GAWSIS , AERONET

Keywords

CEOP

Keywords ( Place )

Nepal , Himalaya

Keywords ( Theme )

meteorology

Keywords ( Theme )

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

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 84 (EPSG:4326) / 7.4

Topology level: Geometry only

Geometric object type: Point

Geometric object count: 1

OnLine resource: SHARE Geonetwork portal
SHARE Geonetwork portal

OnLine resource: ISAC EVK2-Nepal Climate Observatory - Pyramid website
ISAC EVK2-Nepal Climate Observatory - Pyramid website

OnLine resource: GAWSIS (Global Atmosphere Watch Station Information System) report about Nepal Climate Observatory - Pyramid
GAWSIS (Global Atmosphere Watch Station Information System) report about Nepal Climate Observatory - Pyramid

OnLine resource: Official website of CEOP-HE (Coordinated Energy and water cycle Observation Project - High Elevation)
Official website of CEOP-HE (Coordinated Energy and water cycle Observation Project - High Elevation)

OnLine resource: https://geoportal.mountaingenius.org/webapp/srv/en/resources.get?id=129&fname=&access=private

OnLine resource: ce318.pdf
User Manual CE318

Hierarchy level: Series

Other: data: aerosol optical thickness

Statement: Automated Cimel CE-318 sunphotometer was installed at the NCO-P on March 27, 2006, as part of the AERONET network. The Sun Photometer operates at seven wavelengths (340, 380, 440, 500, 670, 870, 940 and 1020 nm), performing both “direct sun” and “sky radiance” measurements. Data are continually sent via GMS Satellite to the AERONET headquarters at NASA - GSFC for processing. Standard products of the sun-pointing data analysis are aerosol optical depths (AOD) and related Angstrom exponents at all the wavelengths, plus precipitable water (PW) and aerosol fine mode optical depth (AODFM) at 500 nm. Two data versions (Versions 1 and 2) and three quality levels (Levels 1.0, 1.5, 2.0) exist for each product. While Levels 1.0 and 1.5 are provided in near real-time, the 12-month or longer delay (due to final calibration and manual inspection) ensures that the highest quality data can be found in Version 2, Level 2.0 data products. Version 2 AOD processing now includes fine and coarse mode AOD as well as fine mode fraction. The sunphotometer used is Cimel -Level 2.0. This instrument is the standard instrument used in the AERONET (AErosol RObotic NETwork) international network.