Instruments at the Chacaltaya GAW station

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Gas concentration  

CO  
CO2 and CH4
O3  
Water vapor isotopes
Hg0 #
SO2

Particle size distribution

SMPS* 
NAIS
HTDMA* # 

Optical properties

Nephelometer*
Aethalometer*
MAAP*
LIDAR

Chemical
composition 

High-Volume Sampler  
Passive Atmospheric Sampling

General Weather Parameters

AWS 5380m
AWS 5260 m

* Instruments connected to the main isokinetic inlet (heated to keep the relative humidity of the sampled air below 90%)
# Instruments of projects currently closed

Raw data plots are provided in most intruments' page.
Validated data is available trough the GAWSIS page.

Validated data here

The instruments are deployed in two locations:

Altitude (masl)
Latitude
Longitude

Observatory
5240
16°21.014'S
68º07.886'W

Northwestern ridge 
5380
16º20.817'S
68º07.698'W

The observatroy is heated to keep the temperature between 20 and 28 ºC. Two fans renew continuosly the air inside the instruments' room.
The shelter located in the northwestern ridge of Chacaltaya is not heated.

Side view of the building hosting the instruments in CHC

Routine check of the inlets. The metropolitan area is visible below, in the Altiplano.

Hut in the northwestern ridge of the mountain