World Library  
Flag as Inappropriate
Email this Article

Mauna Loa Observatory

Article Id: WHEBN0002062793
Reproduction Date:

Title: Mauna Loa Observatory  
Author: World Heritage Encyclopedia
Language: English
Subject: Mauna Loa Solar Observatory, Climate change in New Zealand, Greenhouse effect, Hawaii Route 200, An Inconvenient Truth
Publisher: World Heritage Encyclopedia

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, on the island of Hawaii.

The observatory

Two domes house solar sensors.
The Keeling Curve: Atmospheric CO2 concentrations as 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). According to the NOAA, Mauna Loa is the world's oldest continuous CO2 monitoring station, and the world's primary benchmark site for measurement of the gas. [1]

The latest observation of CO2 concentrations from MLO can be found at web sites along with data from other sites[2] and trends at Mauna Loa.[3] 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 ( ) 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 easternmost 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.[4] The observatory site is also a temporary home to a cosmic microwave background observatory called AMiBA.[5]

Mauna Loa was originally chosen as a monitoring site because, located far from any continent, the air was sampled and is a good average for the central Pacific. Being high, it is above the inversion layer where most of the local effects are present and 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.[6]

See also


  1. ^ "Carbon Dioxide at NOAA’s Mauna Loa Observatory reaches new milestone: Tops 400 ppm".  
  2. ^ "Carbon Cycle-Greenhouse Gases Observatory Measurements".  
  3. ^ "Trends in Atmospheric Carbon Dioxide - Mauna Loa". Retrieved 2009-07-04. 
  4. ^ "Ozonesonde". NOAA Ozone Layer web site. Retrieved 2009-07-04. 
  5. ^ "Mauna Loa Solar Observatory". Retrieved 2009-07-04. 
  6. ^ Steven Ryan (1995). "Quiescent Outgassing of Mauna Loa Volcano 1958-1994". Mauna Loa Revealed: Structure, Composition, History, and Hazards Geophysical Monograph 92,  

External links

  • NOAA Mauna Loa Observatory official web site
  • Global Monitoring Division, Boulder, CO, USA
  • Worldwide Carbon Dioxide concentrations - in real time
This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.

Copyright © World Library Foundation. All rights reserved. eBooks from Project Gutenberg are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.