APPRAISE

Consortia objectives

APPRAISE seeks to employ a single consortium in each of the three areas below. Details of the science rationale and approach of each of these areas can be found in the Appendix 2 of the APPRAISE Science Plan (see Resources).

The key objectives of each consortium are outlined below:

The Direct Impacts of Aerosol on Climate

Objectives:

To quantify better the key parameters controlling the evolution of the single scattering albedo and radiative effect of key aerosol types
To assess the relative contributions of primary and secondary aerosol to the global aerosol budget and their effects on the radiative budget
To assess the regional variabilities in aerosol and their effects
To provide an initial framework for assessing the climatic impacts of air quality regulation of particulate material.

Aerosol Cloud Interactions and Climate

Objectives:

To assess the relative importance of the key processes by which aerosol control cloud microphysics in mixed phase clouds
To determine the properties and role of ice nuclei and their interaction with mixed phase clouds
To assess the role of absorbing material above, below and within clouds

Aerosol coupling in the Earth System

Objectives:

To provide quantitative descriptions of key biogenic surface flux processes between aerosol and their precursor gases.
To quantify biogenic volatile organic compound chemistry and aerosol formation in and above vegetation canopies through integrated field studies
To assess the impact of such processes on regional aerosol burden and precipitation.
To assess the impact of land use changes on aerosol emission and deposition and develop predictive capability.

About the programme

External links

APPRAISE Programme