Mauna Loa Observatory

Mauna Loa Observatory
The Observatory from air.
Satellite image of the summit of Mauna Loa overlaid with 100-meter contour lines.

The Mauna Loa Observatory (MLO) is an atmospheric baseline station on Mauna Loa volcano, on the big island of Hawaii.


The observatory

Two domes house solar sensors.
Atmospheric CO2 concentrations measured at Mauna Loa Observatory.

Since 1956 Mauna Loa Observatory (MLO) has been monitoring and collecting data relating to atmospheric change, and is known especially for the continuous monitoring of atmospheric carbon dioxide (CO2), which is sometimes referred to as the Keeling Curve. The observatory is under the Earth System Research Laboratory which is part of the National Oceanic and Atmospheric Administration (NOAA).

The latest observation of CO2 concentrations from MLO can be found at web sites along with data from other sites,[1] and trends at Mauna Loa.[2] The MLO levels can be compared with other sites in the global monitoring network.

MLO has activities at five locations on the Big Island. The primary observing site is located at the 3397 m (11,141 ft) level on Mauna Loa's north slope, 19°32′10″N 155°34′34″W / 19.53611°N 155.57611°W / 19.53611; -155.57611Coordinates: 19°32′10″N 155°34′34″W / 19.53611°N 155.57611°W / 19.53611; -155.57611 about 5 km north of the summit Mokuaweoweo. The Mauna Loa Solar Observatory shares this site. The administration and some data processing are done in the Hilo, Hawaii office. Kulani Mauka is a rain collection site. Cape Kumukahi is a flask sample site located on the eastern-most point of Hawaii. At the Hilo airport weekly balloon-borne instruments are prepared and launched to measure ozone from the surface to usually over 30 km.[3] The observatory site is also a temporary home to a cosmic microwave background observatory called AMiBA.[4]

Mauna Loa was originally chosen as a monitoring site because, located far from any continent, the air sampled is a good average for the central pacific. Being high, it is above the inversion layer where most of the local effects are present. There was already a rough road to the summit built by the military. The contamination from local volcanic sources is sometimes detected at the observatory, and is then removed from the background data.[5]

See also


  1. ^ "Carbon Cycle-Greenhouse Gases Observatory Measurements". National Oceanographic and Atmospheric Administration. Retrieved 2009-07-04. 
  2. ^ "Trends in Atmospheric Carbon Dioxide - Mauna Loa". Retrieved 2009-07-04. 
  3. ^ "Ozonesone". NOAA Ozone Layer web site. Retrieved 2009-07-04. 
  4. ^ "Mauna Loa Solar Observatory". official web site. Retrieved 2009-07-04. 
  5. ^ Steven Ryan (1995). "Quiescent Outgassing of Mauna Loa Volcano 1958-1994". Mauna Loa Revealed: Structure, Composition, History, and Hazards Geophysical Monograph 92, American Geophysical Union. Archived from the original on 1998-01-14. Retrieved 2009-07-04. 

External links

Wikimedia Foundation. 2010.

Look at other dictionaries:

  • Mauna Loa — Panorama des Mauna Loa Höhe 4.170 m …   Deutsch Wikipedia

  • Mauna Loa (disambiguation) — Mauna Loa is a volcano in Hawaii. Mauna Loa may also refer to Mauna Loa Observatory, an observatory on the slopes of that volcano Mauna Loa Solar Observatory, another observatory on that volcano Mauna Loa Macadamia Nut Corporation, a Hawaiian… …   Wikipedia

  • Mauna Loa — 250px El volcán Mauna Loa, visto desde Saddle Road …   Wikipedia Español

  • Mauna Loa — For other uses, see Mauna Loa (disambiguation). Mauna Loa …   Wikipedia

  • Mauna Loa — Pour les articles homonymes, voir Mauna. Mauna Loa Vue du Mauna Loa enneigé. Géographie Al …   Wikipédia en Français

  • Mauna Loa Solar Observatory — Two domes house the sensors The Mauna Loa Solar Observatory (MLSO) is a collection of instruments for observing the sun located on the slopes of the Mauna Loa volcano on the island of Hawaii, USA at an elevation of 11,135 feet (3,394 m).… …   Wikipedia

  • Mauna Loa (Molokai) — For the volcano on the island of Hawaii, see Mauna Loa. Mauna Loa West Molokai Volcano Elevation 421 m (1,381 ft) Location …   Wikipedia

  • Mauna Kea — with its seasonal snow cap visible Elevation 4,205 m (13,796  …   Wikipedia

  • Mauna Kea — Pour les articles homonymes, voir Mauna. Mauna Kea Vue du Mauna Kea depuis l observatoire du Mauna Loa …   Wikipédia en Français

  • Mauna Kea — /mow neuh kay euh, maw neuh kee euh/ a dormant volcano on the island of Hawaii. 13,784 ft. (4201 m). * * * Dormant volcano, north central Hawaii island, Hawaii, U.S. Rising to 13,796 ft (4,205 m), it is the highest point in the state and is the… …   Universalium