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Environmental and Climate research at Brookhaven National Lab is focused on aerosol chemistry and microphysics, aerosol related infrastructure, climate and process modeling, cloud processes, data management and software engineering, terrestrial ecosystems, meteorological services, and tracer technologies.

Aerosol Chemistry & Microphysics

Focused on improving process-level understanding of aerosol formation and evolution mechanisms, aerosol absorption, and the direct and indirect influences that aerosols have on clouds, precipitation and climate.

Aerosol Related Infrastructure

Provides measurement capabilities to the DOE Atmospheric Radiation Measurement (ARM) program for long-term measurements of aerosols and their precursors across a global network of ground- and aircraft-based locations. 

Climate and Process Modeling

Uses multi-scale process modeling and observational analyses to understand the processes essential to clouds, precipitation, land-atmosphere interactions, and urban impacts.

Cloud Processes

Seeks to improve understanding of microphysical and dynamical processes that impact the lifecycle of clouds to improve their representation in climate models.

Technology Development & Applications and Meteorological Services

Responsible for the maintenance, calibration, data collection and data archiving for the weather instrumentation network associated with BNL's atmospheric dispersion concerns. 

Terrestrial Ecosystem Science & Technology

Seeks to improve the representation of ecosystem processes in Earth System Models in order to increase our ability to understand and project global change. 

Tracer Technologies

The Tracer Technology Group uses perfluorocarbon tracers as a tool for understanding the processes that transport air, heat, water, and pollutants.

  1. FEB

    21

    Thursday

    Environmental & Climate Sciences Department Seminar

    "Polar Stratiform Mixed-phase Clouds Observed with Remote Sensing Measurements"

    Presented by Damao Zhang, Environmental and Climate Sciences Department, Brookhaven National Laboratory

    11 am, Conference Room Bldg 815E

    Thursday, February 21, 2019, 11:00 am

    Stratiform mixed-phase clouds are prevalent at high latitudes and greatly impact regional radiative fluxes. Satellite and ground-based remote sensing measurements enable statistical analyses of mixed-phase cloud properties and their underlying processes. A comprehensive database is constructed of retrieved mixed-phase cloud microphysical properties using ground-based remote sensing measurements from the Atmospheric Radiation Measurement Program (ARM) West Antarctic Radiation Experiment (AWARE) campaign at the McMurdo station, and multiple years of measurements at the ARM North Slope of Alaska (NSA) Utqiagvik Facility. The database includes ice and liquid components of water content, average particle size and concentration, and dynamics including vertical air velocity and turbulence. With the database, polar stratiform mixed-phase cloud macro- and microphysical properties are analyzed and compared for the dramatically different environments. In addition, lidar backscattering and polarization measurements are used to study polar aerosol profiles that may impact stratiform mixed-phase cloud microphysical properties through aerosol-cloud interactions. Such long-term remote sensing observations of polar stratiform mixed-phase cloud properties may be used to evaluate and improve model simulations.

  2. FEB

    28

    Thursday

    Environmental & Climate Sciences Department Seminar

    "Time evolution of aerosol optical properties a few hours downwind of wildfires as observed in BBOP"

    Presented by Larry Kleinman, Environmental and Climate Sciences Department, Brookhaven National Laboratory

    11 am, Conference Room Bldg 815E

    Thursday, February 28, 2019, 11:00 am

    Hosted by: Mike Jensen

    During the first phase of the Biomass Burn Operational Period (BBOP) field campaign, conducted in the Pacific Northwest, the DOE G-1 aircraft was used to follow the time evolution of wildfire smoke from near the point of emission to locations several hours downwind. In nine flights we made repeated transects of wildfire plumes at varying downwind distances and could thereby follow the plume's time evolution. We observed an active photochemistry: rapid depletion of NOx and O3 concentrations up to 170 ppb. The peak concentration of biomass burning aerosols was 16,000 μg/m3. On average there was little change in dilution-normalized aerosol concentration during 2-4 hours of pseudo-Lagrangian sampling. This consistency seemingly hides a dynamic system in which primary aerosols are evaporating and secondary condensing. Particle size increases with downwind distance causing the particles to be more efficient scatters. Aerosol light scattering increases by up to a factor of two even though aerosol mass is nearly constant. Near-fire aerosol had a single scatter albedo (SSA) of 0.8-0.85. After 1-3 hours of aging, SSAs were typically 0.9 and above. For average surface and atmospheric conditions, the observed increases in SSA change plumes from having a small warming effect due to light absorption, to a cooling effect due to the scattering of sunlight upwards, back to space.

  3. MAR

    7

    Thursday

    Environmental & Climate Sciences Department Seminar

    "The Characteristics of Mesoscale Convective Systems as Revealed by Radar Wind Profilers"

    Presented by Die Wang, Environmental and Climate Sciences Department, Brookhaven National Laboratory

    11 am, Conference Room Bldg 815E

    Thursday, March 7, 2019, 11:00 am

    Hosted by: Scott Giangrande

The Environmental & Climate Sciences Department is part of the Environment, Biology, Nuclear Science & Nonproliferation Directorate at Brookhaven National Laboratory.