News about Chacaltaya

Measurements made at Chacaltaya revealed aerosol formation in the free troposphere from Amazonian emissions

6/28/2023

A recent study derived from the SALTENA campaign showed that the Amazonian rainforest releases oxidized organic molecules that form aerosol particles in tropical free troposphere.
Why it matters?
Please read the full press release #here

Chacaltaya on the cover!

3/13/2023

Chacaltaya station on the cover of the February 2023 of the Bulletin of the American Meteorological Society!

In this issue the article about low cost tethersonde measurements led by Chacaltaya teammember Dave N. Whiteman is featured.

The picture on the cover was taken by Diego Aliaga in the framework of the SALTENA campaign, a project held by INAR, University of Helsinki, Stockholm University, CNR, ISAC and many more.

WMO labels Chacaltaya as Global GAW station!

10/17/2022

On this day, the World Meteorological Organization accepted our request to upgrade the station status from regional to global. This is great news!

We are grateful for the help and continuous support from all the institutions that accompaign and are part of the Chacaltaya GAW station from the very beginning.

We are commited to continue providing traceable observations of greenhouse gases (2 variables), reactive gases (3 variables), and atmospheric aerosols (6 variables) following the recommendations of the GAW Programme.

Chacaltaya observatory is now an
established sentinel for monitoring changes occurring in the tropical Andes documenting
changes occurring at a regional and local scale.

Download the full letter of acceptance from the link below

Acceptance_letter_24747-2022-si-aer.pdf
File Size:	63 kb
File Type:	pdf

Download File

About Chacaltaya GAW station

10/12/2022

During the last steering committee meeting, the post-graduate studies department of UMSA (DIPGIS) prepared a series of interviews related to the Chacaltaya GAW station.

Technical audit to Chacaltaya GAW station

9/28/2022

In order to provide confidence that international standards on aerosol data gathering will be met and that any shortfalls will try to be solved, Chacaltaya GAW station aerosol underwent a technical audit performed by Dr. Alfred Wiedensohler on behalf of the ECAC.
The station setup and the aerosol instruments were audited. The instruments audited were the MAAP, the polar nephelometer, the MPSS and the NAIS-5.
This is part of a quality assurance strategy at Chacaltaya GAW station in compliance with ACTRIS and GAW reccomendations.

From left to right F.Velarde, D. Aliaga, Dr. A.Wiedensohler, Dr. M. Andrade, Dr. G. Uzu (28/09/2022)

From left to right: J.C. Salinas, D. Aliaga, G. Uzu, A. Wiedensohler, F. Velarde, I. Moreno, M. Andrade (28/09/2022)

Steering Committee Meeting 2022

9/26/2022

After two years of virtual meetings, this year the Chacaltaya Steering Committee Meeting took place in La Paz. Sessions were held on the 26 and 27th September at the UMSA campus, but it was also possible to participante on-line.
The main scientific results obtained in the last year were thoroughly discussed in a fruitful meeting, along with other matters related to future projects and the station operation.

From left to right Upper row: A. Callau, G. Uzu, M. Andrade, R. Gutierrez Middle row: V. Burgoa, A. Wiedensohler, R. Krecji, L. Blacutt, R. Forno, F. Velarde, D. Whitemann, F. Avila, I. Moreno Bottom row: W. Carvajal, L. Ticona, Z. Tuco, V. Mardóñez, D. Aliaga

A distinction was given to Dr. Alfred Wiedensohler, Dr. Radovan Krejci, Dr. David Whitemann and Dr. Gaëlle Uzu on behalf of Dr. Paolo Laj, as a token of recognition of their support to Chacaltaya GAW station activities during the last 10 years.

From left to right: M. Andrade (LFA director), M. Subieta (IIF director), L. Blacutt (LFA), A. Wiedensohler (ECAC, TROPOS), R. Krecji (Stockholm Univ.), G. Uzu (IRD, IGE), D. Whitemann (Howard Univ.), M. Constantino (DIPGIS-UMSA), A. Ticona (Physics Department director UMSA)

On-line Steering Committee Meeting 2021

11/26/2021

A short steering committe meeting was held on line on the 23rd November 2022. The topics discussed were the review of current scientific programs and main findings, the status of different instruments, the scientific advances and the perspectives and plans for the Chacaltaya station and the urban sites of La Paz and El Alto.

On-line Steering Committee Meeting 2020

12/5/2020

Due to the covid-19 travel restrictions still on place worldwide, the annual steering committee meeting took place on-line on the 4th and 5th December 2020.

From left to right and up to bottom: L. Ticona, R. Gutierrez, F. Avila, M. Peñaloza, D. Aliaga, I. Moreno, M. Andrade, O. Laurent, P. Ginot, G. Uzu, F. Bianchi, F. Velarde, R. Krecji, D. Whitemann, P. Laj, R. Forno, A. Wiedensohler, M. Ramonet, V. Mardóñez, K. Weinhold, --, B., C. Mohr, M. A. Koenig

Covid-19 period: March to September 2020

9/9/2020

The 2020 Steering Committee Meeting was delayed.
In order to protect the personnel, the visits to the station were minimized between March 22nd and September 30th.
Most of the instruments of CHC-GAW station continued operating and were remotely controlled. National Covid-19 restrictions and University policies limited the access for maintenance, but urgent intervention was allowed.

Save the date! 22-24 June 2020 Steering Committee Meeting

2/7/2020

The next scientific meeting related to Chacaltaya GAW station will take place in La Paz, Bolivia between 22 and 24 June 2020.
Science advances and other topics will be discussed, the agenda will be disclosed in the forthcoming months.

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