Space & Atmospheric Sciences

Atmospheric Science is the investigation of the earth's gaseous envelope. Experiments performed at Arecibo measure upper atmosphere composition, temperature and densities in order to understand the controlling physical processes. The Arecibo Radio Telescope can measure the growth and decay of disturbances in the changing layers of charged particles which populate the region known as the ionosphere ( altitudes above 30 miles ). The "big dish" is also used to study plasma physics processes in the electrically charged regions of the earth's atmosphere. where radio waves are influenced most.

Recent News
Solar Week :: March 21-23, 2018
Education March 23, 2018

March 23, 2018: The Solar Week @ AO - Special Events started last Wednesday 21st at the Science & Visitor Center (SVC) - Angel Ramos Foundation with a series of lectures offered by local scientists and guest speakers. The SVC has joined this bi-annual celebration to encourage elementary and junior students to explore the wonders of our nearest star. Also, one of the main focus for this type of events is to motivate young students to pursue higher education careers in Science, Technology, Engineering, Art, and Math (STEAM). Visitors had the chance to learn, firsthand from our speakers, what type of work scientists do at AO and how their efforts contribute to the study of the Sun and its fascinating scientific ramifications and applications. Read More

Arecibo Call for Ionospheric Modification (HF facility)

Space & Atmospheric Jul 21, 2017

The Arecibo Observatory invites you to submit proposals for the use of the HF facility during 2018. HF experiments at Arecibo are scheduled by demand in periods of 5-7 days around new moon. Proposals should specify the associated diagnostics required: the incoherent scatter radar (ISR), active and passive optical instruments and others. Read More

Mid-latitude Radio-Frequency Auroras   Jul 21, 2017

Nighttime plasma lines are measured at Arecibo (Vierinen et al. [2017]).  Jun 15, 2017

The sensitivity of the Arecibo Observatory made possible to observe Gyrolines 

Creating space plasma from the ground  Jan 14, 2017

Press Releases

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[Schedule for current and upcoming projects is currently under construction]


[Instruments section is currently under construction]

SAS Group


Dr. Christiano Brum

SAS Deputy Director

Dr. Michael Sulzer

Head Radar Science

Dr. Pedrina Terra dos Santos

Senior Research Associate

Dr. Elianna Nossa

Research Associate

Dr. Jens Lautenbach

Senior Research Scientist

Dr. Shikha Raizada

Senior Research Associate

Edvier Cabassa

Data Analyst

Alfredo Santoni-Ruiz

Transmitter Engineer
Mrs. Eva Robles

Eva Robles

Data Analyst / Programmer

Eframir Franco-Diaz

Optics & Radar Technician