Metric for Quarter 2: Evaluate LDM (Liu, Daum, McGraw) drizzle threshold parameterization for a range of cloud conditions by comparing the threshold function computed using measurements of cloud droplet number concentration and cloud liquid water content to measurements of drizzle droplet number concentrations and/or drizzle water content.

During fiscal year (FY) 2010, Pacific Northwest National Laboratory (PNNL) Environmental Protection and Regulatory Programs Division (before March 1, 2011 known as the Environmental Management Services Department) staff performed a number of activities as part of PNNL’s National Environmental Policy Act (NEPA) compliance program. These activities helped to verify U.S. Department of Energy (DOE) Pacific Northwest Site Office (PNSO) and Richland Operations Office (RL) compliance with NEPA requirements and streamline the NEPA process for federal activities conducted at PNNL. Self-assessments were performed to address NEPA compliance and cultural and biological resource protection. The NEPA self-assessments focused on implementation within the PNNL Energy and Environment Directorate and routine maintenance activities conducted during the previous calendar year. The cultural and biological resource self-assessments were conducted in accordance with the PNSO Cultural and Biological Resources Management Plan, which specifies annual monitoring of important resources to assess and document the status of the resources and the associated protective mechanisms in place to protect sensitive resources.