Light Absorbing Heating Method
The LAHM instrument was developed in response to Natural Systems Research LLC owner's experiences with the American Climber Science Program (ACSP, www.climberscience.org). ACSP began in 2011 and from the beginning, measurements of light absorbing particles on glaciers has been one of the main research projects. The light absorbing particle research led to a publication in The Cryospherein 2015 which featured an earlier version of the LAHM instrument. Since the 2015 publication, the LAHM instrument has been completely re-developed into the version that we are marketing. For detailed information on version 6.1 of the LAHM instrument, feel free to download the owner's manual. A scientific publication on LAHM 6.1 is currently nearing submission and will be posted online when published.
Currently, two scientific articles have been published in peer reviewed journals which use LAHM instruments:
Kahn, Dierssen, Schwarz, Schmitt, Chlus, Hermanson, Painter, and McKnight 2017: Impacts of coal dust from an active mine on the spectral reflectance of Arctic surface snow in Svalbard, Norway. Journal of Geophysical Research: Atmospheres, vol. 122, 1767-1778. Link to article
Schmitt, All, Schwarz, Arnott, Cole, Lapham, and Celestian 2015: Measurements of light-absorbing particles on the glaciers in the Cordillera Blanca, Peru, The Cryosphere, vol. 9, 331-340. Link to article
Several additional publications are in preparation or in review.