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Measurement in the Arctic are needed to provide new insights into atmospheric characterization of clouds and aerosols in the vicinity of ARM’s North Slope ofAlaska (NSA). Thus we are seeking an instrument package that will include an instrument that measures aerosol size distributions in the 10nm to 10 micron range, a sonic anemometer for turbulence measurements, cloud condensation nuclei counte ...

We are seeking an instrument package to determine the size distribution of hydrometeors in Arctic clouds, and shape. We will require the instrumentation to document the vertical variability of hydrometeors of various levels.Questions – contact Rickey Petty, rick.petty@science.doe.gov

Improved measurement methods are needed for the real-time characterization of the bulk and the sizeresolved chemical composition of ambient aerosols, particularly carbonaceous aerosols. Such improved measurements would be used to facilitate the identification of the origin of aerosols, (i.e., primary versus secondary and fossil fuel versus biogenic). Also, these measurements could help elucidate h ...

In order to better understand the evolution of aerosols in the open air, grant applications are sought to develop instruments that can make fast measurements of gas phase organics or other substances that might either condense or dissolve into aerosols or cloud droplets. Of special interest are volatile organic compounds (VOC) and intermediate volatility organic compounds (IVOC). Although VOCs and ...

Knowledge of particle size distribution is essential for describing both direct and indirect radiative forcing by aerosols. However, current techniques fordetermining these distributions are often ambiguous because of the assumption that the particles are spherical. In particular, the optical techniques most often used in the 0.5-10 ?m size range have inherent problems. Therefore, grant applicatio ...

The aerosol absorption coefficient, together with the aerosol scattering coefficient, determines the single-scattering albedo. This key aerosol property, along with the factors that contribute to it, are critical for determining heating rates and climate forcing by aerosols. Therefore, grant applications are sought to develop reliable instruments for the in situ measurement of the single-scatterin ...

In addition to the specific subtopics listed above, the Department invites grant applications in other areas that fall within the scope of the topic description above.Questions – contact Rick Petty, rick.petty@science.doe.gov

Eighty-five percent of our nation's energy results from the burning of fossil fuels from vast reservoirs of coal, oil, and natural gas. These processes add carbon to the atmosphere, principally in the form of carbon dioxide (CO2). It is important to understand the fate of this excess CO2 in the global carbon cycle in order to assess contemporary terrestrial carbon sinks, the sensitivity of climate ...

Measurement technology is required to quantify carbon sequestration by natural vegetation and ecosystems (i.e., carbon sinks) as well as CO2 emissions to the atmosphere from natural or industrial sources. Grant applications are sought to develop sensors and unique measurement techniques (and associated system technology, if appropriate) to detect and quantify annual net carbon changes of terrestri ...

Improved measurement technology is needed to better characterize processes involving carbon transformations of soil, vegetation, and associatedecosystem components and exchanges with the atmosphere. Particular areas of interest include high resolution measurements of soil carbon/organic matter – i.e., the carbon content of biological tissues in various components (e.g., phytomass, detritus) of t ...