[PHOTO]

How to reach him:

Department of Physics and Atmospheric Science
Dalhousie University
Halifax, NS
B3H 3J5
Canada

e-mail: Ian.Folkins@Dal.Ca
Phone: (902) 494-1292
FAX: (902) 494-5191


Academic Background

1981 - 1986: BSc in Physics, Dalhousie University
1986 - 1991: MSc and PhD in Physics, University of Toronto, Condensed Matter Theory
1991 - 1993: Post-doc at the National Center for Atmospheric Research, Boulder, Colorado
1993 - present: Assistant and Associate Professor, Dalhousie University

I am the Coordinator for the Diploma in Metetorology. Please email me if you have any questions on this program, especially on the academic requirements. I would love to hear from you.

My Dalhousie Diploma in Meteorology Web Page

Atmospheric Science at Dalhousie Web Page:

Dalhousie Atmospheric Science

Dalhousie Atmospheric Science Seminars

Other Links

Cloud Pictures

Atmospheric Chemistry (Fall 2020)

Atmospheric Dynamics I (Fall 2020)

Atmospheric Dynamics II (Winter 2024)

Introduction to Atmospheric Science (Fall 2019)

Atmospheric Physics (Winter 2024)

Publications

Nocturnal Relative Humidity Maxima above the Boundary Layer in the U.S. Midwest: A Diagnostic for the Mountain–Plains Solenoidal Circulation
A. Mercer, R. Chang, and I. Folkins, Mon Wea. Rev. 106, 641 - 658, DOI: 10.1175/MWR-D-17-0189.1, 2018.

Anomaly patterns about strong convective events in the tropics and mid-latitudes: observations from radiosondes and surface weather stations,
T. Mitovski and I. Folkins, J. Geophys. Res. Atmos., 119, 385-406, doi:10.1002/2013JD020447, 2014.

A simple way to improve the diurnal cycle in convective rainfall over land in climate models,
Ian Folkins, T. Mitovskii and J. R. Pierce, J. Geophys. Res. Atmos., 119, doi:10.1002/2013JD020149, 2014.

Improved statistical downscaling of general circulation models,
M. L. Titus, J. Sheng, R. J. Greatbatch, I. Folkins, Atmosphere-Ocean, 51 (2), 213-225, 2013.

The melting level stability anomaly in the tropics,
I. Folkins, Atmos. Chem. Phys., 13, 1167-1176, 2013.

Testing convective transport on short timescales: comparisons with mass divergence and ozone anomaly patterns about high rain events,
Toni Mitovski, I. Folkins, R. V. Martin, and M. Cooper, J. Geophys. Res., 117, D02109, doi:10.1029/2011JD016321, 2012.

Temperature, Relative Humidity, and Divergence Response to High Rainfall Events in the Tropics: Observations and Models
Toni Mitovski, I. Folkins, K von Salzen, and M. Sigmond, Journal of Climate, 23, 3613 - 3625, July 2010.

A one-dimensional cloud model with trimodal convective outflow
Ian Folkins, Journal of Climate, 22, 6437 - 6455, 2009.

Tropical tropopause layer
Fueglistaler, S., A. E. Dessler, T. J. Dunkerton, I. Folkins, Q. Fu, and P. W. Mote, 2009: Tropical tropopause layer, Rev. Geophys., 47, RG1004, doi:10.1029/2008RG000267, February 2009.

A Low-Level Circulation in the Tropics
Folkins, I., S. Fueglistaler, G. Lesins, and T. Mitovski, J. Atmos. Sci., 65, 1019 - 1034, 2008.

Martin, R.V., B. Sauvage, I. Folkins, C.E. Sioris, C. Boone, P. Bernath, and J.R. Ziemke, Space-based constraints on the production of nitric oxide by lightning, J. Geophys. Res., 112, D09309, doi:10.1029/2006JD007831, 2007.

Seasonal cycles of O3, CO, and convective outflow at the tropical tropopause
Folkins, I., P. Bernath, C. Boone, G. Lesins, N. Livesey, A. M. Thompson, K. Walker, and J. C. Witte (2006), Geophys. Res. Lett., 33, L16802, doi:10.1029/2006GL026602.

Testing convective parameterizations with tropical measurements of HNO3, CO, H2O, and O3: Implications for the water vapor budget
Folkins, I., P. Bernath, C. Boone, L. J. Donner, A. Eldering, G. Lesins, R. V. Martin, B.-M. Sinnhuber, and K. Walker (2006), J. Geophys. Res., 111, D23304, doi:10.1029/2006JD007325.

Convective damping of buoyancy anomalies and its effect on lapse rates in the tropical lower troposphere
Ian Folkins, Atmos. Chem. Phys., 6, 1-12, 2006.

Estimating the contribution of bromoform to stratospheric bromine and its relation to dehydration in the tropical tropopause layer
B.-M. Sinnhuber and I. Folkins, Atmos. Chem. Phys., 6, 4755 - 4761, 2006.

Temperatures, Transport, and Chemistry in the TTL Ian Folkins, SPARC Newsletter 25 - July 2005,

ONLINE VERSION

The vertical structure of tropical convection, and its impact on the budgets of water vapor and ozone
Ian Folkins and Randall Martin, J. Atmos. Sci., 62, 1560 - 1573, 2005.

Tropical rainfall and boundary layer entropy
Ian Folkins and Chris Braun, J. Clim. 16, 1807 - 1820, 2003.

A simple explanation for the increase in relative humidity between 11 and 14 km in the tropics
Ian Folkins, K. K. Kelly, and E. M. Weinstock, J. Geophys. Res. 107, 10.1029/2002JD002185, 14 December 2002, 2002.

Tropical ozone as an indicator of deep convection
Ian Folkins, C. Braun, A. M. Thompson, and J. C. Witte, J. Geophys. Res., 10.1029/2001JD001178, 12 July 2002

Origin of lapse rate changes in the upper tropical troposphere
Ian Folkins, J. Atmos. Sci., 59, 992 - 1005, (2002).

Mercury flux measurements over air and water on Kejimkujik National Park, Nova Scotia
F. S. Boudala, I. Folkins, S. Beauchamp, R. Tordon, J. Neima, and B. Johnson, Water Air Soil Pollut., 122, 183 - 202, (2000).

A relationship between convective outflow and surface equivalent potential temperatures in the tropics
I. Folkins, S. J. Oltmans, and A. Thompson, Geophys. Res. Lett. 27, 2549-2552, (2000).

Impact of acetone on ozone production and OH in the upper troposphere at high NO
Ian Folkins and Robert Chatfield, J. Geophys. Res. 105, 11585-11599, (2000).

A barrier to vertical mixing at 14 km in the tropics: Evidence from ozonesondes and aircraft measurements
Ian Folkins, M. Loewenstein, J. Podolske, S. Oltmans, and M. Proffitt, J. Geophys. Res., 104, 22095-22102, (1999).

Ozone production efficiencies of acetone and peroxides in the upper troposphere
Ian Folkins, R. Chatfield, H. Singh, Y. Chen, and B. Heikes, Geophys. Res. Lett., 25, 1305 - 1308, (1998).

OH, HO2, NO, and O3 in two biomass burning plumes: Implications for ozone production
Ian Folkins, P. Wennberg, T. Hanisco, J. G. Anderson. R. Salawitch, Geophys. Res. Lett., 24, 3185-3188, (1997).

Large scale enhancements in NO/NOy from subsonic aircraft emissions: Comparisons with Observations
Jacquelyn Witte, I. Folkins, J. Neima, B. Ridley, J. Walega, and A. Weinheimmer, J. Geophys. Res., 102, 28,169-28,175, (1997).

Biomass burning and deep convection in Southeast Asia: Results from ASHOE/MAESA
Folkins, I., R. Chatfield, D. Baumgardner, and M. Proffitt, J. Geophys. Res., 102, 13291-13299, (1997).

Ozone and potential vorticity at the subtropical tropopause break
Ian Folkins and Christof Appenzeller, J. Geophys. Res., 101, 18787-18792, (1996).

I. Folkins, G. Brasseur and Claire Granier, Comparison of models of middle atmosphere composition with observations, Chapter 11 of Adv. Space. Res. 18, 241-254, (1996).

I. A. Folkins, A. J. Weinheimer, B. A. Ridley, J. G. Walega, B. Anderson, J. E. Collins, G. Sachse, R. F. Pueschel, D. R. Blake, O3, NOy, and NOx/NOy in the upper troposphere of the Equatorial Pacific, J. Geophys. Res., 100, 20913-20926, (1995).

Lefevre, F., G. Brasseur, I. Folkins, A. Smith, and P. Simon, Chemistry of the 1991-92 stratospheric winter: Three-dimensional model simulations, J. Geophys. Res., 99, 8183-8191, (1994).

I. A. Folkins, A. J. Weinheimer, Guy Brasseur, Franck Lefevre, Brian A. Ridley, James G. Walega, James E. Collins, and R. F. Pueschel, Three-dimensional model interpretation of NOx measurements from the lower stratosphere, J. Geophys. Res., 99, 23117-23129, (1994).

Ian Folkins and Guy Brasseur, The Chemical Mechanisms Behind Ozone Depletion, Chemistry and Industry, April 20, pp 294-297, (1992).

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