TY - JOUR A1 - Williams, J. E. A1 - Dentener, F. J. A1 - van den Berg, A. R. T1 - Carbonyl compounds in boreal coniferous forest air in Hyytiälä, Southern Finland JO - Atmos. Chem. Phys. J1 - ACP VL - 4 IS - 7 SP - 1771 EP - 1780 Y1 - 2004/09/08 PB - Copernicus GmbH SN - 1680-7324 UR - http://www.atmos-chem-phys.net/4/1771/2004/ L1 - http://www.atmos-chem-phys.net/4/1771/2004/acp-4-1771-2004.pdf DO - 10.5194/acp-4-1771-2004 ER - TY - JOUR A1 - Williams, J. E. A1 - Dentener, F. J. A1 - van den Berg, A. R. T1 - Ion production rate in a boreal forest based on ion, particle and radiation measurements JO - Atmos. Chem. Phys. J1 - ACP VL - 4 IS - 7 SP - 1933 EP - 1943 Y1 - 2004/09/29 PB - Copernicus GmbH SN - 1680-7324 UR - http://www.atmos-chem-phys.net/4/1933/2004/ L1 - http://www.atmos-chem-phys.net/4/1933/2004/acp-4-1933-2004.pdf DO - 10.5194/acp-4-1933-2004 ER - TY - JOUR A1 - Williams, J. E. A1 - Dentener, F. J. A1 - van den Berg, A. R. T1 - Kinetic nucleation and ions in boreal forest particle formation events JO - Atmos. Chem. Phys. J1 - ACP VL - 4 IS - 9/10 SP - 2353 EP - 2366 Y1 - 2004/11/30 PB - Copernicus GmbH SN - 1680-7324 UR - http://www.atmos-chem-phys.net/4/2353/2004/ L1 - http://www.atmos-chem-phys.net/4/2353/2004/acp-4-2353-2004.pdf DO - 10.5194/acp-4-2353-2004 ER - TY - JOUR A1 - Williams, J. E. A1 - Dentener, F. J. A1 - van den Berg, A. R. T1 - Initial steps of aerosol growth JO - Atmos. Chem. Phys. J1 - ACP VL - 4 IS - 11/12 SP - 2553 EP - 2560 Y1 - 2004/12/15 PB - Copernicus GmbH SN - 1680-7324 UR - http://www.atmos-chem-phys.net/4/2553/2004/ L1 - http://www.atmos-chem-phys.net/4/2553/2004/acp-4-2553-2004.pdf DO - 10.5194/acp-4-2553-2004 ER - TY - JOUR A1 - Williams, J. E. A1 - Dentener, F. J. A1 - van den Berg, A. R. T1 - Deployment of a ground-based CIMS apparatus for the detection of organic gases in the boreal forest during the QUEST campaign JO - Atmos. Chem. Phys. J1 - ACP VL - 5 IS - 2 SP - 357 EP - 372 Y1 - 2005/02/08 PB - Copernicus GmbH SN - 1680-7324 UR - http://www.atmos-chem-phys.net/5/357/2005/ L1 - http://www.atmos-chem-phys.net/5/357/2005/acp-5-357-2005.pdf DO - 10.5194/acp-5-357-2005 ER - TY - JOUR A1 - Williams, J. E. A1 - Dentener, F. J. A1 - van den Berg, A. R. T1 - Measurements of organic gases during aerosol formation events in the boreal forest atmosphere during QUEST JO - Atmos. Chem. Phys. J1 - ACP VL - 5 IS - 2 SP - 373 EP - 384 Y1 - 2005/02/08 PB - Copernicus GmbH SN - 1680-7324 UR - http://www.atmos-chem-phys.net/5/373/2005/ L1 - http://www.atmos-chem-phys.net/5/373/2005/acp-5-373-2005.pdf DO - 10.5194/acp-5-373-2005 ER - TY - JOUR A1 - Williams, J. E. A1 - Dentener, F. J. A1 - van den Berg, A. R. T1 - Effects of SO2 oxidation on ambient aerosol growth in water and ethanol vapours JO - Atmos. Chem. Phys. J1 - ACP VL - 5 IS - 3 SP - 767 EP - 779 Y1 - 2005/03/10 PB - Copernicus GmbH SN - 1680-7324 UR - http://www.atmos-chem-phys.net/5/767/2005/ L1 - http://www.atmos-chem-phys.net/5/767/2005/acp-5-767-2005.pdf DO - 10.5194/acp-5-767-2005 ER - TY - JOUR A1 - Williams, J. E. A1 - Dentener, F. J. A1 - van den Berg, A. R. T1 - Sulphuric acid closure and contribution to nucleation mode particle growth JO - Atmos. Chem. Phys. J1 - ACP VL - 5 IS - 4 SP - 863 EP - 878 Y1 - 2005/03/16 PB - Copernicus GmbH SN - 1680-7324 UR - http://www.atmos-chem-phys.net/5/863/2005/ L1 - http://www.atmos-chem-phys.net/5/863/2005/acp-5-863-2005.pdf DO - 10.5194/acp-5-863-2005 ER - TY - JOUR A1 - Williams, J. E. A1 - Dentener, F. J. A1 - van den Berg, A. R. T1 - Temperature and light dependence of the VOC emissions of Scots pine JO - Atmos. Chem. Phys. J1 - ACP VL - 5 IS - 4 SP - 989 EP - 998 Y1 - 2005/03/22 PB - Copernicus GmbH SN - 1680-7324 UR - http://www.atmos-chem-phys.net/5/989/2005/ L1 - http://www.atmos-chem-phys.net/5/989/2005/acp-5-989-2005.pdf DO - 10.5194/acp-5-989-2005 ER - TY - JOUR A1 - Williams, J. E. A1 - Dentener, F. J. A1 - van den Berg, A. R. T1 - The contribution of sulphuric acid to atmospheric particle formation and growth: a comparison between boundary layers in Northern and Central Europe JO - Atmos. Chem. Phys. J1 - ACP VL - 5 IS - 7 SP - 1773 EP - 1785 Y1 - 2005/07/20 PB - Copernicus GmbH SN - 1680-7324 UR - http://www.atmos-chem-phys.net/5/1773/2005/ L1 - http://www.atmos-chem-phys.net/5/1773/2005/acp-5-1773-2005.pdf DO - 10.5194/acp-5-1773-2005 ER - TY - JOUR A1 - Williams, J. E. A1 - Dentener, F. J. A1 - van den Berg, A. R. T1 - Size and composition measurements of background aerosol and new particle growth in a Finnish forest during QUEST 2 using an Aerodyne Aerosol Mass Spectrometer JO - Atmos. Chem. Phys. J1 - ACP VL - 6 IS - 2 SP - 315 EP - 327 Y1 - 2006/02/06 PB - Copernicus GmbH SN - 1680-7324 UR - http://www.atmos-chem-phys.net/6/315/2006/ L1 - http://www.atmos-chem-phys.net/6/315/2006/acp-6-315-2006.pdf DO - 10.5194/acp-6-315-2006 ER - TY - JOUR A1 - Williams, J. E. A1 - Dentener, F. J. A1 - van den Berg, A. R. T1 - Cluster activation theory as an explanation of the linear dependence between formation rate of 3nm particles and sulphuric acid concentration JO - Atmos. Chem. Phys. J1 - ACP VL - 6 IS - 3 SP - 787 EP - 793 Y1 - 2006/03/10 PB - Copernicus GmbH SN - 1680-7324 UR - http://www.atmos-chem-phys.net/6/787/2006/ L1 - http://www.atmos-chem-phys.net/6/787/2006/acp-6-787-2006.pdf DO - 10.5194/acp-6-787-2006 ER - TY - JOUR A1 - Williams, J. E. A1 - Dentener, F. J. A1 - van den Berg, A. R. T1 - Size-segregated aerosol chemical composition at a boreal site in southern Finland, during the QUEST project JO - Atmos. Chem. Phys. J1 - ACP VL - 6 IS - 4 SP - 993 EP - 1002 Y1 - 2006/03/28 PB - Copernicus GmbH SN - 1680-7324 UR - http://www.atmos-chem-phys.net/6/993/2006/ L1 - http://www.atmos-chem-phys.net/6/993/2006/acp-6-993-2006.pdf DO - 10.5194/acp-6-993-2006 ER - TY - JOUR A1 - Williams, J. E. A1 - Dentener, F. J. A1 - van den Berg, A. R. T1 - Atmospheric sulphuric acid and aerosol formation: implications from atmospheric measurements for nucleation and early growth mechanisms JO - Atmos. Chem. Phys. J1 - ACP VL - 6 IS - 12 SP - 4079 EP - 4091 Y1 - 2006/09/11 PB - Copernicus GmbH SN - 1680-7324 UR - http://www.atmos-chem-phys.net/6/4079/2006/ L1 - http://www.atmos-chem-phys.net/6/4079/2006/acp-6-4079-2006.pdf DO - 10.5194/acp-6-4079-2006 ER - TY - JOUR A1 - Williams, J. E. A1 - Dentener, F. J. A1 - van den Berg, A. R. T1 - MALTE – model to predict new aerosol formation in the lower troposphere JO - Atmos. Chem. Phys. J1 - ACP VL - 6 IS - 12 SP - 4499 EP - 4517 Y1 - 2006/10/06 PB - Copernicus GmbH SN - 1680-7324 UR - http://www.atmos-chem-phys.net/6/4499/2006/ L1 - http://www.atmos-chem-phys.net/6/4499/2006/acp-6-4499-2006.pdf DO - 10.5194/acp-6-4499-2006 ER - TY - JOUR A1 - Williams, J. E. A1 - Dentener, F. J. A1 - van den Berg, A. R. T1 - The composition of nucleation and Aitken modes particles during coastal nucleation events: evidence for marine secondary organic contribution JO - Atmos. Chem. Phys. J1 - ACP VL - 6 IS - 12 SP - 4601 EP - 4616 Y1 - 2006/10/12 PB - Copernicus GmbH SN - 1680-7324 UR - http://www.atmos-chem-phys.net/6/4601/2006/ L1 - http://www.atmos-chem-phys.net/6/4601/2006/acp-6-4601-2006.pdf DO - 10.5194/acp-6-4601-2006 ER - TY - JOUR A1 - Williams, J. E. A1 - Dentener, F. J. A1 - van den Berg, A. R. T1 - Using discriminant analysis as a nucleation event classification method JO - Atmos. Chem. Phys. J1 - ACP VL - 6 IS - 12 SP - 5549 EP - 5557 Y1 - 2006/12/11 PB - Copernicus GmbH SN - 1680-7324 UR - http://www.atmos-chem-phys.net/6/5549/2006/ L1 - http://www.atmos-chem-phys.net/6/5549/2006/acp-6-5549-2006.pdf DO - 10.5194/acp-6-5549-2006 ER - TY - JOUR A1 - Williams, J. E. A1 - Dentener, F. J. A1 - van den Berg, A. R. T1 - Hygroscopic properties of ultrafine aerosol particles in the boreal forest: diurnal variation, solubility and the influence of sulfuric acid JO - Atmos. Chem. Phys. J1 - ACP VL - 7 IS - 1 SP - 211 EP - 222 Y1 - 2007/01/16 PB - Copernicus GmbH SN - 1680-7324 UR - http://www.atmos-chem-phys.net/7/211/2007/ L1 - http://www.atmos-chem-phys.net/7/211/2007/acp-7-211-2007.pdf DO - 10.5194/acp-7-211-2007 ER - TY - JOUR A1 - Williams, J. E. A1 - Dentener, F. J. A1 - van den Berg, A. R. T1 - Nucleation and growth of new particles in Po Valley, Italy JO - Atmos. Chem. Phys. J1 - ACP VL - 7 IS - 2 SP - 355 EP - 376 Y1 - 2007/01/23 PB - Copernicus GmbH SN - 1680-7324 UR - http://www.atmos-chem-phys.net/7/355/2007/ L1 - http://www.atmos-chem-phys.net/7/355/2007/acp-7-355-2007.pdf DO - 10.5194/acp-7-355-2007 ER - TY - JOUR A1 - Williams, J. E. A1 - Dentener, F. J. A1 - van den Berg, A. R. T1 - Non-volatile residuals of newly formed atmospheric particles in the boreal forest JO - Atmos. Chem. Phys. J1 - ACP VL - 7 IS - 3 SP - 677 EP - 684 Y1 - 2007/02/12 PB - Copernicus GmbH SN - 1680-7324 UR - http://www.atmos-chem-phys.net/7/677/2007/ L1 - http://www.atmos-chem-phys.net/7/677/2007/acp-7-677-2007.pdf DO - 10.5194/acp-7-677-2007 ER - TY - JOUR A1 - Williams, J. E. A1 - Dentener, F. J. A1 - van den Berg, A. R. T1 - Relation of air mass history to nucleation events in Po Valley, Italy, using back trajectories analysis JO - Atmos. Chem. Phys. J1 - ACP VL - 7 IS - 3 SP - 839 EP - 853 Y1 - 2007/02/15 PB - Copernicus GmbH SN - 1680-7324 UR - http://www.atmos-chem-phys.net/7/839/2007/ L1 - http://www.atmos-chem-phys.net/7/839/2007/acp-7-839-2007.pdf DO - 10.5194/acp-7-839-2007 ER - TY - JOUR A1 - Williams, J. E. A1 - Dentener, F. J. A1 - van den Berg, A. R. T1 - Airborne measurements of nucleation mode particles I: coastal nucleation and growth rates JO - Atmos. Chem. Phys. J1 - ACP VL - 7 IS - 6 SP - 1491 EP - 1501 Y1 - 2007/03/19 PB - Copernicus GmbH SN - 1680-7324 UR - http://www.atmos-chem-phys.net/7/1491/2007/ L1 - http://www.atmos-chem-phys.net/7/1491/2007/acp-7-1491-2007.pdf DO - 10.5194/acp-7-1491-2007 ER - TY - JOUR A1 - Williams, J. E. A1 - Dentener, F. J. A1 - van den Berg, A. R. T1 - Boundary layer concentrations and landscape scale emissions of volatile organic compounds in early spring JO - Atmos. Chem. Phys. J1 - ACP VL - 7 IS - 7 SP - 1869 EP - 1878 Y1 - 2007/04/16 PB - Copernicus GmbH SN - 1680-7324 UR - http://www.atmos-chem-phys.net/7/1869/2007/ L1 - http://www.atmos-chem-phys.net/7/1869/2007/acp-7-1869-2007.pdf DO - 10.5194/acp-7-1869-2007 ER - TY - JOUR A1 - Williams, J. E. A1 - Dentener, F. J. A1 - van den Berg, A. R. T1 - Connections between atmospheric sulphuric acid and new particle formation during QUEST III–IV campaigns in Heidelberg and Hyytiälä JO - Atmos. Chem. Phys. J1 - ACP VL - 7 IS - 8 SP - 1899 EP - 1914 Y1 - 2007/04/17 PB - Copernicus GmbH SN - 1680-7324 UR - http://www.atmos-chem-phys.net/7/1899/2007/ L1 - http://www.atmos-chem-phys.net/7/1899/2007/acp-7-1899-2007.pdf DO - 10.5194/acp-7-1899-2007 ER - TY - JOUR A1 - Williams, J. E. A1 - Dentener, F. J. A1 - van den Berg, A. R. T1 - Ambient sesquiterpene concentration and its link to air ion measurements JO - Atmos. Chem. Phys. J1 - ACP VL - 7 IS - 11 SP - 2893 EP - 2916 Y1 - 2007/06/11 PB - Copernicus GmbH SN - 1680-7324 UR - http://www.atmos-chem-phys.net/7/2893/2007/ L1 - http://www.atmos-chem-phys.net/7/2893/2007/acp-7-2893-2007.pdf DO - 10.5194/acp-7-2893-2007 ER - TY - JOUR A1 - Williams, J. E. A1 - Dentener, F. J. A1 - van den Berg, A. R. T1 - The role of VOC oxidation products in continental new particle formation JO - Atmos. Chem. Phys. J1 - ACP VL - 8 IS - 10 SP - 2657 EP - 2665 Y1 - 2008/05/20 PB - Copernicus GmbH SN - 1680-7324 UR - http://www.atmos-chem-phys.net/8/2657/2008/ L1 - http://www.atmos-chem-phys.net/8/2657/2008/acp-8-2657-2008.pdf DO - 10.5194/acp-8-2657-2008 ER - TY - JOUR A1 - Williams, J. E. A1 - Dentener, F. J. A1 - van den Berg, A. R. T1 - Airborne measurements of nucleation mode particles II: boreal forest nucleation events JO - Atmos. Chem. Phys. J1 - ACP VL - 9 IS - 3 SP - 937 EP - 944 Y1 - 2009/02/06 PB - Copernicus GmbH SN - 1680-7324 UR - http://www.atmos-chem-phys.net/9/937/2009/ L1 - http://www.atmos-chem-phys.net/9/937/2009/acp-9-937-2009.pdf DO - 10.5194/acp-9-937-2009 ER -