Ground based and airborne in-situ aerosol measurements during the APPRAISE-CLOUDS (Aerosol cloud interactions and climate) project from the Chilbolton Atmospheric Observatory, Hampshire (South West England) and on board the FAAM BAE-146 research aircraft. The data were collected for use in the CLOUDS project, which is one of multiple projects within the APPRAISE (Aerosol Properties, PRocesses And Influences on the Earth's climate) programme. Airborne measurements for the APPRAISE-CLOUDS project were also carried out using the FAAM BAe146 aircraft. In total 20 flights were carried out as part of this project with the aircraft operating from Cranfield, Exeter and Oberpffafenhofen, Germany. For the APPRAISE-CLOUDS project the aircraft was equipped with a range of cloud and aerosol instruments including FSSP (cloud droplets), CPI (ice particles), 2DS (ice particles), 2DC (ice particles), 2DP (ice particles), CAPS (droplets, ice, large aerosol), AMS (aerosol chemistry), SP2 (soot aerosol), PCASP (aerosol size), SMPS (aerosol size), Filters (aerosol chemistry), CVI (cloud particle residuals), Nephalometers (aerosol scattering), PSAP (soot aerosol), Whole Air Samplers (trace gases - post flight analysis), Trace gas analysers (NOx, O3, SO2). Missions typically involved flight legs above and below cloud to characterise aerosol in the vicinity of the clouds, and flight legs within cloud to characterise cloud properties and attempt to measure cloud particle residuals. In total 110 flight hours were allocated to this project. Flight No. Date Location B331 6/12/07 SW England B336 8/01/08 SW England B337 15/01/08 SW England B338 17/01/08 SW England B376 15/05/08 SW Germany B377 17/05/08 Switzerland B378 18/05/08 Switzerland B421 17/12/08 Cardigan Bay B422 15/01/09 SW England B423 20/01/09 Bristol Channel B424 21/01/09 SW England B425 22/01/09 SW England B426 28/01/09 SW England B430 18/02/09 SW England B431 26/02/09 SW England B432 27/02/09 Scotland B433 3/03/09 SW England B434 3/03/09 SW England B449 27/05/09 SW England B456 6/06/09 SW England

Airborne atmospheric measurements from core and non-core instrument suites data on board the FAAM BAE-146 aircraft collected for APPRAISE - Aerosol properties, processes and influences on the Earth's climate project.

Airborne atmospheric measurements from core and non-core instrument suites data on board the FAAM BAE-146 aircraft collected for APPRAISE - Aerosol properties, processes and influences on the Earth's climate and EUCAARI-LONGREX (European Integrated Project on Aerosol Cloud Climate and Air Quality Interactions) projects.

Airborne atmospheric measurements from core and non-core instrument suites data on board the FAAM BAE-146 aircraft collected for APPRAISE - Aerosol properties, processes and influences on the Earth's climate project.

Airborne atmospheric measurements from core and non-core instrument suites data on board the FAAM BAE-146 aircraft collected for APPRAISE - Aerosol properties, processes and influences on the Earth's climate project.

Airborne atmospheric measurements from core and non-core instrument suites data on board the FAAM BAE-146 aircraft collected for APPRAISE - Aerosol properties, processes and influences on the Earth's climate and EUCAARI-LONGREX (European Integrated Project on Aerosol Cloud Climate and Air Quality Interactions) projects.

Airborne atmospheric measurements from core and non-core instrument suites data on board the FAAM BAE-146 aircraft collected for APPRAISE - Aerosol properties, processes and influences on the Earth's climate project.

Airborne atmospheric measurements from core and non-core instrument suites data on board the FAAM BAE-146 aircraft collected for APPRAISE - Aerosol properties, processes and influences on the Earth's climate project.

Airborne atmospheric measurements from core instrument suite data on board the FAAM BAE-146 aircraft during flight 17 for NCAS general FAAM flying (SeptEx, Winter 2010) and APPRAISE - Aerosol properties, processes and influences on the Earth's climate projects.

Airborne atmospheric measurements from core and non-core instrument suites data on board the FAAM BAE-146 aircraft collected for APPRAISE - Aerosol properties, processes and influences on the Earth's climate project.