Biosphere Effects on Aerosols and Photochemistry Experiment: BEARPEX
Biosphere Effects on Aerosols and Photochemistry Experiment: BEARPEX
Editor(s): A. Guenther, J. Lelieveld, and J. Williams
The Biosphere Effects on AeRosols and Photochemistry Experiment (BEARPEX) was a multi-investigator collaboration conducted as two eight week deployments, August–October 2007 and June–July 2009. The measurements were among the most comprehensive suite of gas and aerosol properties attempted at a single site. The project built on an extensive background of previous experiments in the foothills of the Sierra Nevada. Our goals were to develop an improved mechanistic understanding of chemical and ecological processes affecting atmospheric composition and to use this improved understanding to provide a clearer and more accurate evaluation of how chemical processing of biogenic and anthropogenic emissions affects the composition and radiative properties of the atmosphere on urban, regional and global scales. The experimental design paid particular attention to three crosscutting issues: a) chemistry downwind of urban areas where there is high VOC reactivity (due to emissions from forests) and low NOx, b) understanding the full oxidation sequence and subsequent fate of biogenic VOC and c) the processes leading to formation and removal of biogenic secondary organic aerosol (SOA) and the associated physical, chemical and optical properties of SOA. Results from the BEARPEX campaign will be published in this Special Issue of Atmospheric Chemistry and Physics.

Download citations of all papers

10 Apr 2013
Formation and occurrence of dimer esters of pinene oxidation products in atmospheric aerosols
K. Kristensen, K. L. Enggrob, S. M. King, D. R. Worton, S. M. Platt, R. Mortensen, T. Rosenoern, J. D. Surratt, M. Bilde, A. H. Goldstein, and M. Glasius
Atmos. Chem. Phys., 13, 3763–3776, https://doi.org/10.5194/acp-13-3763-2013,https://doi.org/10.5194/acp-13-3763-2013, 2013
29 Oct 2012
Observations of atmosphere-biosphere exchange of total and speciated peroxynitrates: nitrogen fluxes and biogenic sources of peroxynitrates
K.-E. Min, S. E. Pusede, E. C. Browne, B. W. LaFranchi, P. J. Wooldridge, G. M. Wolfe, S. A. Harrold, J. A. Thornton, and R. C. Cohen
Atmos. Chem. Phys., 12, 9763–9773, https://doi.org/10.5194/acp-12-9763-2012,https://doi.org/10.5194/acp-12-9763-2012, 2012
22 Oct 2012
Observations of glyoxal and formaldehyde as metrics for the anthropogenic impact on rural photochemistry
J. P. DiGangi, S. B. Henry, A. Kammrath, E. S. Boyle, L. Kaser, R. Schnitzhofer, M. Graus, A. Turnipseed, J-H. Park, R. J. Weber, R. S. Hornbrook, C. A. Cantrell, R. L. Maudlin III, S. Kim, Y. Nakashima, G. M. Wolfe, Y. Kajii, E.C. Apel, A. H. Goldstein, A. Guenther, T. Karl, A. Hansel, and F. N. Keutsch
Atmos. Chem. Phys., 12, 9529–9543, https://doi.org/10.5194/acp-12-9529-2012,https://doi.org/10.5194/acp-12-9529-2012, 2012
07 Sep 2012
Insights into hydroxyl measurements and atmospheric oxidation in a California forest
J. Mao, X. Ren, L. Zhang, D. M. Van Duin, R. C. Cohen, J.-H. Park, A. H. Goldstein, F. Paulot, M. R. Beaver, J. D. Crounse, P. O. Wennberg, J. P. DiGangi, S. B. Henry, F. N. Keutsch, C. Park, G. W. Schade, G. M. Wolfe, J. A. Thornton, and W. H. Brune
Atmos. Chem. Phys., 12, 8009–8020, https://doi.org/10.5194/acp-12-8009-2012,https://doi.org/10.5194/acp-12-8009-2012, 2012
03 Jul 2012
Importance of biogenic precursors to the budget of organic nitrates: observations of multifunctional organic nitrates by CIMS and TD-LIF during BEARPEX 2009
M. R. Beaver, J. M. St. Clair, F. Paulot, K. M. Spencer, J. D. Crounse, B. W. LaFranchi, K. E. Min, S. E. Pusede, P. J. Wooldridge, G. W. Schade, C. Park, R. C. Cohen, and P. O. Wennberg
Atmos. Chem. Phys., 12, 5773–5785, https://doi.org/10.5194/acp-12-5773-2012,https://doi.org/10.5194/acp-12-5773-2012, 2012
12 Oct 2011
Origins and composition of fine atmospheric carbonaceous aerosol in the Sierra Nevada Mountains, California
D. R. Worton, A. H. Goldstein, D. K. Farmer, K. S. Docherty, J. L. Jimenez, J. B. Gilman, W. C. Kuster, J. de Gouw, B. J. Williams, N. M. Kreisberg, S. V. Hering, G. Bench, M. McKay, K. Kristensen, M. Glasius, J. D. Surratt, and J. H. Seinfeld
Atmos. Chem. Phys., 11, 10219–10241, https://doi.org/10.5194/acp-11-10219-2011,https://doi.org/10.5194/acp-11-10219-2011, 2011
01 Sep 2011
Photochemical modeling of glyoxal at a rural site: observations and analysis from BEARPEX 2007
A. J. Huisman, J. R. Hottle, M. M. Galloway, J. P. DiGangi, K. L. Coens, W. Choi, I. C. Faloona, J. B. Gilman, W. C. Kuster, J. de Gouw, N. C. Bouvier-Brown, A. H. Goldstein, B. W. LaFranchi, R. C. Cohen, G. M. Wolfe, J. A. Thornton, K. S. Docherty, D. K. Farmer, M. J. Cubison, J. L. Jimenez, J. Mao, W. H. Brune, and F. N. Keutsch
Atmos. Chem. Phys., 11, 8883–8897, https://doi.org/10.5194/acp-11-8883-2011,https://doi.org/10.5194/acp-11-8883-2011, 2011
04 Aug 2011
Forest-atmosphere exchange of ozone: sensitivity to very reactive biogenic VOC emissions and implications for in-canopy photochemistry
G. M. Wolfe, J. A. Thornton, M. McKay, and A. H. Goldstein
Atmos. Chem. Phys., 11, 7875–7891, https://doi.org/10.5194/acp-11-7875-2011,https://doi.org/10.5194/acp-11-7875-2011, 2011
18 Jul 2011
Estimating the atmospheric boundary layer height over sloped, forested terrain from surface spectral analysis during BEARPEX
W. Choi, I. C. Faloona, M. McKay, A. H. Goldstein, and B. Baker
Atmos. Chem. Phys., 11, 6837–6853, https://doi.org/10.5194/acp-11-6837-2011,https://doi.org/10.5194/acp-11-6837-2011, 2011
15 Feb 2011
The Chemistry of Atmosphere-Forest Exchange (CAFE) Model – Part 2: Application to BEARPEX-2007 observations
G. M. Wolfe, J. A. Thornton, N. C. Bouvier-Brown, A. H. Goldstein, J.-H. Park, M. McKay, D. M. Matross, J. Mao, W. H. Brune, B. W. LaFranchi, E. C. Browne, K.-E. Min, P. J. Wooldridge, R. C. Cohen, J. D. Crounse, I. C. Faloona, J. B. Gilman, W. C. Kuster, J. A. de Gouw, A. Huisman, and F. N. Keutsch
Atmos. Chem. Phys., 11, 1269–1294, https://doi.org/10.5194/acp-11-1269-2011,https://doi.org/10.5194/acp-11-1269-2011, 2011
05 Jan 2011
The Chemistry of Atmosphere-Forest Exchange (CAFE) Model – Part 1: Model description and characterization
G. M. Wolfe and J. A. Thornton
Atmos. Chem. Phys., 11, 77–101, https://doi.org/10.5194/acp-11-77-2011,https://doi.org/10.5194/acp-11-77-2011, 2011
17 Sep 2010
Observations of elevated formaldehyde over a forest canopy suggest missing sources from rapid oxidation of arboreal hydrocarbons
W. Choi, I. C. Faloona, N. C. Bouvier-Brown, M. McKay, A. H. Goldstein, J. Mao, W. H. Brune, B. W. LaFranchi, R. C. Cohen, G. M. Wolfe, J. A. Thornton, D. M. Sonnenfroh, and D. B. Millet
Atmos. Chem. Phys., 10, 8761–8781, https://doi.org/10.5194/acp-10-8761-2010,https://doi.org/10.5194/acp-10-8761-2010, 2010
16 Jul 2010
Corrigendum to "Measurement of atmospheric nitrous acid at Blodgett Forest during BEARPEX2007" published in Atmos. Chem. Phys., 10, 6283-6294, 2010
X. Ren, H. Gao, X. Zhou, J. D. Crounse, P. O. Wennberg, E. C. Browne, B. W. LaFranchi, R. C. Cohen, M. McKay, A. H. Goldstein, and J. Mao
Atmos. Chem. Phys., 10, 6501–6501, https://doi.org/10.5194/acp-10-6501-2010,https://doi.org/10.5194/acp-10-6501-2010, 2010
12 Jul 2010
Measurement of atmospheric nitrous acid at Bodgett Forest during BEARPEX2007
X. Ren, H. Gao, X. Zhou, J. D. Crounse, P. O. Wennberg, E. C. Browne, B. W. LaFranchi, R. C. Cohen, M. McKay, A. H. Goldstein, and J. Mao
Atmos. Chem. Phys., 10, 6283–6294, https://doi.org/10.5194/acp-10-6283-2010,https://doi.org/10.5194/acp-10-6283-2010, 2010
30 Jun 2010
Size-dependent aerosol deposition velocities during BEARPEX'07
R. J. Vong, I. J. Vong, D. Vickers, and D. S. Covert
Atmos. Chem. Phys., 10, 5749–5758, https://doi.org/10.5194/acp-10-5749-2010,https://doi.org/10.5194/acp-10-5749-2010, 2010
12 Oct 2009
Closing the peroxy acetyl nitrate budget: observations of acyl peroxy nitrates (PAN, PPN, and MPAN) during BEARPEX 2007
B. W. LaFranchi, G. M. Wolfe, J. A. Thornton, S. A. Harrold, E. C. Browne, K. E. Min, P. J. Wooldridge, J. B. Gilman, W. C. Kuster, P. D. Goldan, J. A. de Gouw, M. McKay, A. H. Goldstein, X. Ren, J. Mao, and R. C. Cohen
Atmos. Chem. Phys., 9, 7623–7641, https://doi.org/10.5194/acp-9-7623-2009,https://doi.org/10.5194/acp-9-7623-2009, 2009
05 Aug 2009
In-situ ambient quantification of monoterpenes, sesquiterpenes, and related oxygenated compounds during BEARPEX 2007: implications for gas- and particle-phase chemistry
N. C. Bouvier-Brown, A. H. Goldstein, J. B. Gilman, W. C. Kuster, and J. A. de Gouw
Atmos. Chem. Phys., 9, 5505–5518, https://doi.org/10.5194/acp-9-5505-2009,https://doi.org/10.5194/acp-9-5505-2009, 2009
22 Jul 2009
Observations of NOx, ΣPNs, ΣANs, and HNO3 at a Rural Site in the California Sierra Nevada Mountains: summertime diurnal cycles
D. A. Day, D. K. Farmer, A. H. Goldstein, P. J. Wooldridge, C. Minejima, and R. C. Cohen
Atmos. Chem. Phys., 9, 4879–4896, https://doi.org/10.5194/acp-9-4879-2009,https://doi.org/10.5194/acp-9-4879-2009, 2009
23 Mar 2009
Methyl chavicol: characterization of its biogenic emission rate, abundance, and oxidation products in the atmosphere
N. C. Bouvier-Brown, A. H. Goldstein, D. R. Worton, D. M. Matross, J. B. Gilman, W. C. Kuster, D. Welsh-Bon, C. Warneke, J. A. de Gouw, T. M. Cahill, and R. Holzinger
Atmos. Chem. Phys., 9, 2061–2074, https://doi.org/10.5194/acp-9-2061-2009,https://doi.org/10.5194/acp-9-2061-2009, 2009
27 Jan 2009
Eddy covariance fluxes of acyl peroxy nitrates (PAN, PPN and MPAN) above a Ponderosa pine forest
G. M. Wolfe, J. A. Thornton, R. L. N. Yatavelli, M. McKay, A. H. Goldstein, B. LaFranchi, K.-E. Min, and R. C. Cohen
Atmos. Chem. Phys., 9, 615–634, https://doi.org/10.5194/acp-9-615-2009,https://doi.org/10.5194/acp-9-615-2009, 2009
CC BY 4.0