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Information

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Data

Data Download Search for Aerosol Data

(MLO) Mauna Loa, Hawaii, United States

Sampling Stations Page

Site Description
Station Information
Category: Baseline Station
Status: Operational - 1976, Major upgrades - 1997, 2000 and 2008
Site Info: Contacts:
Betsy Andrews
NOAA/GML
325 Broadway
Boulder, CO 80305

betsy.andrews@noaa.gov

Mailing address:
NOAA/GML 1437 Kilauea Ave, #102 Hilo, HI 96720
Photos and Drawings: Photos of MLO system (pre-2010)
Photos of MLO system in 2020
Station flow diagram
Links: WMO/GAW station information page

The Mauna Loa system was upgraded in April 2000. The new aerosol system was run in tandem with the old system for a year so measurements could be compared. The current system improvements include: size cuts (1 and 10 um), humidity control, a nephelometer capable of back scatter measurements and the aethalometer measurements were supplemented those made by a Particle Soot/Absorption Photometer (PSAP). In 2011, a CLAP was installed and in 2013, after almost 2 years of overlapping measurements, the PSAP was replaced by the CLAP. A 7-wavelength aethalometer (AE33) was added in 2014, and an older aethalometer (AE31) was removed from service in 2017.

MLO Aerosol Properties Plots

Statistical Summary Plots - Multi-year record of final aerosol and atmospheric property data.

Do not quote or cite.

Atmospheric Properties

These plots are designed to provide a quick look at the measured aerosol properties. They display raw unedited data, but known corrections for instrument errors have been applied.

Short-Term Status Plots (last 5 days) Long-Term Averaged Plots (hourly averages, last 30 days)
OverviewOverview
Absorption OverviewAbsorption Overview
NephelometerNephelometer
AethalometerAethalometer
HousekeepingHousekeeping