Atacama Large Millimeter Array Site Characterization

Since June 1998, ESO has monitored the tropospheric conditions of Llano de Chajnantor, in the Region of Antofagasta in Chile. This place is the selected site for the Atacama Large Millimeter Array.

Contents

Summary of weather and PWV data at Chajnantor in the period June 1998-December 1999

Phase stability data

Meteorological data

183 GHz radiometer data

Radiosonde data

Wind Speed (1 Hz resolution anemometer)

Analysis and Results

Pictures from Chajnantor and San Pedro de Atacama

Photo Gallery from Chajnantor

Weather

Weather conditions (near real time from APEX)

Weather conditions (short term predictions)

Weather conditions (long term predictions)

GOES8 Satellite Image (10.7u) South Pacific Region

Weather conditions at the Calama Airport, II Region

Geopotential Height and Cloud Information

Maps available for Pampa La Bola and Chajnantor areas

These links are part of the information available at the NRAO site characterisation page on the internet. The graphic information regarding: maps in scales 1:5.000, 1:50.000 and others scales, as well as digital elevation maps, have been generated with participation of the European Southern Observatory, National Radio Astronomy Observatory and Nobeyama Radio Observatory.

Coordinates of Landmarks, Roads, etc...

Topography, Maps and Digital elevation models...

Sites of interest

ALMA Project Book

Site Characterization and Monitoring (Chapter14,PDF)

Site Characterization at NRAO

Homepage for the ALMA Project at ESO

Homepage for the ALMA Project at NRAO

North American ALMA Science Center

Canadian ALMA Project Website

ALMA Memo Series

Other astronomy projects at Chajnantor

CBI: Cosmic Background Imager

APEX Telescope

ASTE Telescope

NANTEN2

CAT: Cornell Atacama Telescope

ALMA (NAOJ)

Useful Links