The 2022 eruption of the Mauna Loa volcano cut off road access to the Mauna Loa Baseline Observatory. Construction on the temporary Mauna Loa Access road was completed on 26 March, 2026.

At this time, there is no site access for the general public to the Mauna Loa Observatory and NOAA has not yet established a public opening date. GML and scientific partners are working together to bring mission critical scientific projects back online. It is still unclear when utility infrastructure will be replaced and power re-established to the site.

We will provide another update as more information becomes available.

Media contact: Theo Stein at (303) 819-7409 or theo.stein@noaa.gov.

Organization(s):

EPA logo US Environmental Protection Agency (EPA) / National Exposure Research Laboratories (NERL) / Human Exposure and Atmospheric Sciences Division (HEASD)


What does this program measure?


How does this program work?

A modified URG-9000A automated sampler for the collection of semi-continuous ambient samples for analysis of major ions using ion chromatography is used at MLO


Why is this research important?

The objective is to provide collection and analysis of one year of high-resolution (~hourly) atmospheric gas and particulate phase halide samples.


Are there any trends in the data?


How does this program fit into the big picture?
What is it's role in global climate change?


Comments and References


Lead Investigator(s):

Dr Matthew S. Landis
919-541-4841


MLO Contact(s):

Aidan Colton
808-933-6965 (x233)
Alan M. Yoshinaga
808-933-6965 (x232)


Web Site(s)

http://www.epa.gov/
heasdweb/


Date Started

February, 2006


Related Programs

EPA Aethalometer
EPA Mercury Monitoring
EPA Mercury Precipitation
EPA Dichotomous Partisol
EPA Fine Particle Sampler
EPA Sulfur Dioxoide
EPA Surface Ozone




Photographs:

Ambient Ion MonitorAmbient Ion Monitor

AIM InteriorWater trap

AIM InteriorIon Chromatograph

AIM InteriorAIM Denuder