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Mobile climate observatory prepares for campaign aboard ship

Thu, 08/16/2012 - 9:38am

Following a six-month land-based campaign in the Maldives to study tropical convective clouds, the U.S. Department of Energy's (DOE) second Atmospheric Radiation Measurement (ARM) mobile facility, called AMF2, is being readied for its first marine-based research campaign aboard a cargo container ship in the Pacific Ocean.

The facility, operated and maintained by Argonne National Laboratory's Environmental Science division, is a mobile suite of atmospheric sensing instruments to measure properties of clouds, precipitation, aerosols, and radiation in regions where observational data is sparse or existing data is difficult to resolve in global climate models.

This October (2012), the AMF2 will be deployed on the Horizon Lines ship Spirit, which will traverse its scheduled shipping route between Los Angeles and Honolulu approximately 25 times over the course of the year-long field campaign. The campaign is called MAGIC for the Marine ARM GPCI Investigation of Clouds; GPCI is a project comparing data from the major climate models. Atmospheric scientist Ernie Lewis of Brookhaven National Laboratory leads the MAGIC campaign.

According to Lewis, low marine boundary layer clouds have a large influence on Earth's climate by reflecting sunlight and mediating interactions between air and sea. The goal of the MAGIC campaign is to improve the representation of clouds and their cloud-type transitions—the stratocumulus-to-cumulus transition, for example—in global climate models. These cloud-type transitions are an ever-present phenomenon in this area of the Pacific Ocean, which makes the Spirit route a suitable opportunity to gather real-time data.

Source: Argonne National Laboratory

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