Measurements at the Mauna Loa Observatory stopped after the 2022 eruption of the Mauna Loa volcano, when lava flow crossed the access road and took out power lines to the facility. The observatory remains inaccessible by vehicle and without power from the local utility company.
Observatory staff has established limited solar power in four observatory buildings and restored approximately 33 percent of the measurements onsite, including the Global Monitoring Laboratory and Scripps critical CO2 records and other atmospheric measurements.
Media can contact: Theo Stein (303) 819-7409 (theo.stein@noaa.gov) or Karin Vergoth 303-632-6413 (karin.vergoth@noaa.gov)
The program measures solar spectral irradiance, atmospheric transmission, and aerosol optical depth. The units of measurement are relative, rsp. (a dimensionless quantity)
Solar Sensors at MLO sunset (courtesy of Forrest M. Mims III)
By passive remote sensing of atmospheric transmission using the Sun as a standard light source.
Atmospheric turbidity or Aerosol Optical Depth (AOD) is a crucial parameter in understanding the radiative forcing of Earth's climate and a core parameter in the World Meteorological Organization (WMO) Global Atmosphere Watch monitoring program.
No trends have been established yet.
Aerosols exert a predominantly cooling effect on climate. Their optical properties in the atmospheric column are summarized by AOD.
Mauna Loa Observatory is a prime calibration site for WMO/GAW PFR network
Christoph Wehrli
+41 (0)81 417 51 37
Paul Fukumura
808-933-6965 (x223)
http://www.pmodwrc.ch/pmod.php?topic=worcc
2000
Solar Radiation
Air Quality Control
not available