The University Senate of Michigan Technological University

The University Senate of Michigan Technological University

PROPOSAL 07-07

(Voting Units: Academic)

PROPOSAL FOR Ph.D. PROGRAM IN ATMOSPHERIC SCIENCES

(HEGIS Code 40.04)

Submitted by the
Atmospheric Sciences Doctoral Planning Group
(Members listed in Table 1)
Contacts: R.E. Honrath (reh@mtu.edu) and R.A. Shaw (rashaw@mtu.edu)
October 3, 2006

There is a large and growing need for scientists and engineers with advanced training in the atmospheric sciences. In particular, there is a recognized need for society to understand and respond to problems related to weather, climate, atmospheric hazards from natural and human sources (local and global pollution, volcanic clouds, etc.), and the hydrological cycle. Powerful new research tools for addressing these problems, such as satellite remote sensors and multi-scale atmospheric computer models, require graduate level training in the atmospheric sciences for their effective use. Furthermore, these research problems and the techniques used to address them are inherently interdisciplinary in nature, and therefore span traditional departmental organizations. Michigan Tech is already a recognized leader in many research areas related to the atmospheric sciences, but our ability to carry out cutting edge research in this area would benefit from greater coherence and broader graduate training. Here, we propose a new doctoral degree program in Atmospheric Sciences, which would consolidate and advance this leadership, would provide a more appropriate degree program for some of our graduate students, and would provide an improved atmospheric sciences program for all students involved in atmospheric studies.

1. Rationale

A growing number of faculty and graduate students at Michigan Tech are working in the area of atmospheric sciences. Active research programs, courses, and a growing number of graduate degrees based on this work already exist. This initiative is to build on this critical mass of effort by developing a new, non-departmental Ph.D. program in the Atmospheric Sciences. The initiative is motivated by the following.

This program provides a mechanism for recruiting more and better-qualified graduate students, by providing a degree that encompasses the interdisciplinary nature of atmospheric research better than programs within single academic departments. Currently, students must apply to programs in Physics, Environmental Engineering, or Geology. This new program would attract additional Ph.D. students who wish to have broad academic experience in atmospheric chemistry, atmospheric physics, and remote sensing: an uncommon mix in other atmospheric science programs.
The new program builds on current strengths, with a committed core of seven faculty in three different departments and with several other faculty with expressed interest in participating. Start-up could be virtually instantaneous, and fast startup would accommodate existing students who are interested in entering the program.
Most of the core graduate-level atmospheric sciences courses are already offered at MTU, and this program would result in organization of these courses into a coherent program.
The new program would enhance interdisciplinary research at MTU by bringing together graduate students and faculty housed in different departments but conducting related research. The new program is seen as an extension of the successful Remote Sensing Institute, which is committed to the initiative.
The experience of the core faculty is that research in atmospheric science can be well funded and that the new program could help with efforts to increase external funding.
The new program responds to a national and international need for more researchers in atmospheric sciences, driven by the importance of weather and climate to human health, economic development, and environmental sustainability.

2. Related programs in the region

There are about 68 atmospheric science graduate programs in the United States (see: Curricula in the atmospheric, oceanic, hydrologic, and related sciences, www.ametsoc.org/amsucar curricula). In the upper Midwest (MI, WI, MN, IL, IN, and OH), there are 8 (Univ. Michigan, Univ. Chicago, UW Madison, UW Milwaukee, Univ. Illinois Champaign-Urbana, Univ. Minnesota, Ohio State, and Purdue Univ.), and in Michigan there is currently only one (through the Department of Atmospheric, Oceanic, and Space Sciences at Univ. Michigan). The character of these atmospheric sciences programs varies markedly: They are housed in Atmospheric Sciences, Geography, Geophysical Sciences, and Mathematics departments, and their research emphasis depends on the faculty mix.

The faculty involved at MTU would make for a rather broad mix, involving atmospheric chemistry, atmospheric aerosols, atmospheric remote sensing, atmospheric turbulence, clouds and the hydrologic cycle. This combination of subject areas is a good basis for global atmospheric change studies and spans the major subdisciplines of the atmospheric sciences. Within the regional programs, the MTU program is quite distinct, and it would complement the existing programs. There would be important opportunities for collaborations within the region, and exchange opportunities for students would be likely. The job opportunities for Ph.D. graduates in atmospheric sciences are good and are expected to remain so as a result of national and international priorities. For example, the website of the American Geophysical Union shows that its atmospheric sciences division is its fastest growing division (also, see the American Geophysical Union’s Careers website http://www.agu.org/sci soc/careers.html).

3. Faculty

The primary graduate faculty members for the Atmospheric Sciences Ph.D. program are listed in Table 1. Participating faculty are those who likely would advise Ph.D. students in the program, teach relevant courses, serve on qualifying exam committees, etc. The faculty come from the Department of Civil and Environmental Engineering, the Department of Geological and Mining Engineering and Sciences, and the Department of Physics. We anticipate that a coherent program in the atmospheric sciences will help to attract future faculty with expertise in this area and that this will be an important contribution to the research stature of Michigan Tech. (Such new faculty could be hired into the departments listed in Table 1 or other departments, such as Chemistry.) Statistically, new faculty in the atmospheric sciences are likely to bring in more external funding than the university typically spends on a new position (see “External funding of atmospheric science programs in the

United States: More than the cost of a new professor,” by A. Robock, Bull. Amer. Meteor. Soc., March 2005). However, the proposed new Ph.D. program does not require the hiring of new faculty for its success.The Atmospheric Sciences program is interdisciplinary and inclusive, and therefore is open to faculty and students with overlapping research and academic interests. MTU faculty affiliated with the Atmospheric Science program are S. Green (Chemistry), D. Karnosky (Forest Res. & Env. Sci.), L. B. King (Mech. Eng. – Eng. Mech.), K. Paterson (Civ. & Env. Eng.), and M. C. Roggemann (Elec. & Comp. Eng.). These faculty carry out research that can benefit from the presence of a more coherent effort in the atmospheric sciences and have students who will benefit from the new course offerings and educational activities resulting from the program.

4. Program Requirements and Coursework

Course requirements are designed to ensure that all students have a firm understanding of the fundamentals of atmospheric science, including the principles underlying atmospheric structure, atmospheric dynamics, and atmospheric chemistry. These principles will be covered in three core courses. In addition, each student will take at least two additional courses to obtain additional depth and/or breadth.

The set of core courses may be taken in any order and will be offered at least biannually. This ensures that students will be able to complete the core courses and be prepared to take the Comprehensive Examination by the end of their second year.

Table 1: Primary Graduate Faculty Members
Name	Department	Related Research Interests	Current Related Ph.D. Students	Current Related Research Funding ($k/year)	Related Papers, Past 5 Years
Gregg Bluth	Geo. Eng. & Sci.	Volcanic clouds; atmospheric remote sensing	2	700	15
Will Cantrell	Physics	Heterogeneous ice nucleation; aerosol physics	1.5	180	13
Richard Honrath	Civ. & Env. Eng.	Atmospheric chemistry	3	333	21
Alex Kostinski	Physics	Atmospheric physics	1	100	17
Judith Perlinger	Civ. & Env. Eng.	Atmospheric boundary-layer fluxes	2	125	4
Bill Rose	Geo. Eng. & Sci.	Volcanic clouds; atmospheric remote sensing	5	250	25
Raymond Shaw	Physics	Cloud physics and atmospheric turbulence	2	240	11

4.1 Required (Core) Courses

The core curriculum for the Atmospheric Sciences doctoral program will consist of three courses covering fundamentals of atmospheric sciences, a seminar course, a special topics course, and doctoral research credits. The three core courses will be developed from two existing courses: CE 5515: Atmospheric Chemistry, and PH 4640: Introduction to Atmospheric Physics. The latter will be expanded into two graduate-level courses, one of which will provide the necessary background in atmospheric fluid dynamics. The Department of Physics has agreed to create this new course with support from the Remote Sensing Institute.

ATM5640/PH5640 Atmospheric Physics

Thermodynamics of the atmosphere: adiabatic processes (including lapse rate and potential temperature), phase transformations, relative humidity, stratification; radiation in the atmosphere: Blackbody radiation, Beer’s law, Radiative transfer equations with and without scattering; and cloud microphysics: homogeneous nucleation, K¨ohler theory, growth by condensation, growth by collection. Credits: 3.0 (3-0-0). Prerequisites: MA3530 and PH2300 (or equivalent courses). Semesters Offered: Fall (even-numbered years).

ATM5680/PH5680 Atmospheric Fluid Dynamics

Fundamental forces and conservation laws that govern fluid flow; applications to the atmosphere, including balanced flow (pressure gradient and Coriolis force), vorticity dynamics, turbulence, waves, and boundary layers. Credits: 3.0 (3-0-0). Prerequisites: MA3530 and PH2300 (or equivalent courses). Semesters Offered: Fall (odd-numbered years).

ATM5515/CE5515/CH5515 Atmospheric Chemistry

Study of the photochemical processes governing the composition of the troposphere and stratosphere, with application to air pollution and climate change. Covers radical chain reaction cycles, heterogeneous chemistry, atmospheric radiative transfer, and measurement techniques for atmospheric gases. Credits: 3.0 (3-0-0). Prerequisites: Graduate standing and CE4501 or CH3520. Semesters Offered: Spring.

ATM5100 Atmospheric Sciences Journal and Seminar Club

A weekly discussion of recent literature in the atmospheric sciences. Often coordinated with atmosphere-related seminars in the Remote Sensing seminar series. All Atmospheric Sciences doctoral students are required to register each year. Credits: 1.0. Prerequisites: ATM5515 or ATM5640 or ATM5680. Semesters Offered: Spring.

ATM5200 Special Topics in Atmospheric Sciences

Advanced study of topics in the atmospheric sciences. The subject matter may vary from term to term depending on the needs of students. Credits: variable to 3.0. May be repeated. Restrictions: Must be enrolled in one of the following Level(s): Graduate. Semesters Offered: Fall, Spring, Summer.

ATM6999 Doctoral Research

Independent research conducted in partial fulfillment of the requirements for the PhD degree. Scheduled by arrangement. Credits: variable to 12.0. May be repeated; Graded Pass/Fail Only Restrictions: Permission of instructor and department required; Must be enrolled in one of the following Level(s): Graduate. Semesters Offered: Fall, Spring, Summer.

4.2 Additional Courses

Students will select at least two of the following courses, to be approved by the doctoral Advisory Committee.

CE4501 Environmental Engineering Chemical Processes

Application of chemistry, conservation principles, and mathematics to the analysis of chemical processes occurring in natural and engineered environments. Topics include acid-base phenomena, the carbonate system, precipitation/dissolution, redox chemistry, diffusion, mass transfer, and applications to engineering design. Laboratory experiences illustrate principles and modern measurement. Credits: 4.0 Lec-Rec-Lab: (0-3-3) Semesters Offered: Fall Pre-Requisite(s): (CE3501 or CE3503) and CE3502 and CH3500(C)

CE4504 Air Quality Engineering and Science

Overview of air quality regulation in the U.S. and world: basic concepts of atmospheric chemistry and transport: fugitive, point, and area emissions: principles and tradeoffs of operation and design of air pollution control systems: and, application of air quality models. Credits: 3.0 Lec-Rec-Lab: (0-3-0) Semesters Offered: Fall Pre-Requisite(s): CE3501 or CE3503

CE5512: Applied Boundary Layer Meteorology

Study of how forcing phenomena affect transport of water and chemicals in the atmospheric boundary layer and how this transport is measured in the field, including relevant aspects of fluid dynamics, boundary layer structure, surface energy balance, and flux measurement. Credits: 3.0 Lec-Rec-Lab: (2-1-0) Semesters Offered: Fall - Offered alternate years beginning with the 2006-2007 academic year Restrictions: May not be enrolled in one of the following Class(es): Freshman, Sophomore, Junior

CE5560: Advanced Topics in Air Quality Engineering

Advanced study of topics related to atmospheric chemistry and/or modeling the transformation and transport of atmospheric pollutants. Credits: variable to 4.0; Repeatable to a Max of 8 Semesters Offered: Fall, Spring, Summer Restrictions: Permission of instructor required

EE5540: Statistical Optics

Study of the effects of randomness in optical systems. Covers coherence theory, photon statistics, wave propagation, and imaging through random media. Presents analytic and computational approaches. Credits: 3.0 Lec-Rec-Lab: (3-0-0) Semesters Offered: Spring Restrictions: Must be enrolled in one of the following Level(s): Graduate; Credits: 3.0

GE4250 Fundamentals of Remote Sensing

This course focuses on the basic physics behind above-surface remote sensing and remote sensing systems. Topics covered include: properties of the atmosphere, absorption and scattering of electromagentic radiation, instrument design, data acquisition and processing, validation, and basic applications. Credits 3.0 (2-1-0). Semesters Offered: Spring. Prerequisites: PH 2200 and (MA2150 or MA2160).

GE5140 Paleoclimatology

This course will investigate the geologic evidence of global climate and the mechanisms that are interpreted to produce climate change. Credits: 3.0 Lec-Rec-Lab: (3-0-0) Semesters Offered: On Demand

GE5270 Volcanic Clouds

Synthesis of recent advancements in volcanic cloud research along with theoretical background and practical experience in the study, understanding and remote sensing of volcanic clouds. Techniques covered are also applicable to other atmospheric phenomena although volcanic ash, gas and aerosol remote sensing is the main focus. Credits: 4.0, Repeatable to a max of 8; Graded Pass/Fail only Lec-Rec-Lab: (2-0-6) Semesters Offered: On Demand Restrictions: May not be enrolled in one of the following Class(es): Freshman, Junior, Sophomore

GE5800 Mathematical Modeling of Earth Systems

Introduction to numerical techniques for mathematical modeling of various earthsystem phenomena, including groundwater flow, heat transfer, and atmospheric transport. Numerical techniques covered include finite-difference, finite-element, collocation, and characteristic methods. Students write their own mathematical models. Prerequisite: experience in programming computer languages such as FORTRAN. Credits: 3.0 Lec-Rec-Lab: (3-0-0) Semesters Offered: On Demand Restrictions: Must be enrolled in one of the following Level(s): Graduate

GE5990 Special Topics (Plasma Dynamics)

Introduction to the dynamics of plasma (an electrically conducting gas). Covers simultaneous solution of the Navier-Stokes fluid equations along with the laws of electromagnetics. The course reviews basic electromagnetics and the motion of charged particles in fields. The conservation laws for plasmas are developed both from a fluid standpoint and a kinetic description. Wave motion, diffusion, and resistivity are presented for plasma systems. Both laboratory and astrophysical manifestations of plasma behavior are discussed. Credits: 3.0 Lec-Rec-Lab: (3-0-0) Semesters Offered: On demand.

PH5320: Mathematical Physics

These courses are not necessary for the program to function, but may be added based on the desires and avaiability of affiliated faculty members.

Each student must pass the Comprehensive Examination. This examination will cover the topics covered in the core courses ATM 5515, ATM 5640, and ATM 5680. It will be given (when requested) in the fall semester of each year. Each student who intends to sit for the Qualifying Examination must declare that intention by the end of the second week of classes in the term the exam is to be taken. Each examination will be administered by a committee of four faculty members who will decide whether or not each student passes; a student will pass if at least three committee members vote pass. Passing the Comprehensive Examination elevates the student to the status of Doctoral Candidate. After the examination has been taken and graded, the student and the student’s Advisory Committee will meet to orally review the exam. Students who do not pass the Qualifying Examination will be allowed a second attempt. Students who do not pass the exam on the second attempt are dropped from the program and may apply to a suitable M.S. program (e.g., within their home department).

This is a written and oral description and defense of the research plan made by the student to his/her Advisory Committee. The proposal should be made within one year of achieving Doctoral Candidacy. The student’s advisory committee must unanimously agree that the research plan is acceptable. The Chairperson will be notified of the outcome of the Dissertation Proposal. The oral proposal is open to the University community.

The research conducted by the student will be presented to the Advisory Committee as a written dissertation. An oral presentation of that dissertation will be made following the completion of the written work. The dissertation is acceptable if the advisor and at least three of the remaining four members of the Advisory Committee concur on its acceptance. The oral defense is open to the University community.

The Atmospheric Sciences Ph.D. program, as an interdisciplinary, cross-department program, will be administered through the Graduate School with assistance from the MTU Remote Sensing Institute (RSI). (All faculty listed in Table 1 are members of RSI.) Participating faculty will form a steering committee, which will include at least one member from each participating department. The committee will elect a program director who will serve as the point of contact with the Dean of the Graduate School and the RSI director, and will be assisted by the RSI staff member as needed. Most atmospheric science research grants at MTU are affiliated with RSI and overhead return through RSI will provide base funding for the program administration provided by the RSI staff member.

Selection of students and administration of the academic program will be handled by the participating faculty. The home departments of the core courses are committed to offering them on a regular basis. Students enrolled in the program will be housed within the home department of their advisors: the home department will provide office space, computational resources, and necessary supplies and infrastructure, and will consider the students for departmental teaching assistantships when appropriate and available. All such students will be counted as members of their home departments for the purposes of internal university accounting. (Note that students entering the program without having chosen an advisor will be given a home department and initial advisor based on their background and interests.) Lastly, student tuition for the program will not include the Engineering Tuition Differential because the PhD in Atmospheric Sciences is not an engineering degree.

6. Items Required by University Senate Proposal 38-04: Formats for Proposing New Academic Programs

Following is a list of the University Senate requirements for new graduate degree programs, with relevant details for the Atmospheric Sciences doctoral program:

2004 - present, Director, Remote Sensing Institute, Michigan Technological University (MTU)

1998 - present, Associate Professor, Dept. of Geological

Eng.

and Sciences, MTU

1998, NASA Summer Faculty Research Fellow, NASA/Goddard Space Flight Center (GSFC)

1993-1994, Assistant Research Scientist, Geology Dept., University of Maryland

(i)Bluth, G.J.S. and W.I. Rose (2002) Collaborative studies target volcanic hazards in Central America. Eos Trans. AGU, 83, 429, 434, 435.

Bluth, G.J.S. and W.I. Rose (2004) Observations of eruptive activity at Santiaguito Volcano, Guatemala. J. Volc. Geotherm. Res., 136, 297-302.

Bluth, G.J.S., W.I. Rose, I.E. Sprod, and A.J. Krueger (1997) Stratospheric loading from explosive volcanic eruptions. J. Geol., 105, 671-683.

Guffanti, M., J.W. Ewert, G.M. Gallina, G.J.S. Bluth, and G.L. Swanson (2005, in press) The volcanic-ash hazard to aviation during the 2003-2004 eruption of Anatahan Volcano, Commonwealth of the Northern Mariana Islands. J. Volc. Geotherm. Res., Special Issue.

Wallace, P., S. Carn, W. Rose, T. Gerlach and G. Bluth (2003) Integrating petrologic and remote sensing perspectives on magmatic volatiles and volcanic degassing. Eos Trans. AGU, 84, 441-456.

(ii) Carn, S.A. and G.J.S. Bluth (2003) Prodigious sulfur dioxide emissions from Nyamuragira volcano, D.R. Congo. Geophys. Res. Lett., 30, 2211-2216.

Huntoon, J.E., G.J.S. Bluth, and W.A. Kennedy (2001) Measuring the effects of a researchbased field experience on undergraduates and K-12 teachers. J. Geol. Ed., 49, 235-248.

Rodriguez, L.A., I.M. Watson, W.I. Rose, Y.K. Branan, G.J.S. Bluth, G. Chigna, O. Matias, D. Escobar, S.A. Carn, and T.P. Fischer (2004) SO2 emissions to the atmosphere from active volcanoes in Guatemala and El Salvador, 1999-2002. J. Volc. Geotherm. Res., 138, 325-344.

Sahetapy-Engel, S.T.M., L.P. Flynn, A.J.L. Harris, G.J. Bluth, W.I. Rose, and O. Matías (2004) Surface temperature and spectral measurements at Santiaguito lava dome, Guatemala. Geophys. Res. Lett., 31, doi: 10.1029/2004GL020683.

Watson, I.M., V.J. Realmuto, W.I. Rose, A.J. Prata, G.J.S. Bluth, Y. Gu, C.E. Bader, and T. Yu (2004) Thermal infrared remote sensing of volcanic emissions using the Moderate Resolution Imaging Spectroradiometer (MODIS). J. Volc. Geotherm. Res., 135, 75-89.

Collaborators Outside of Michigan Tech: Carn, S. (UM Baltimore Co.); Chigna, G. (INSIVUMEH); Ewert, J. (USGS); Flynn, L. (U Hawaii); Gallina, G.M. (NOAA); Gerlach, T. (USGS); Gu, Y. (McGill); Guffanti, M. (USGS); Guo, S. (McGill); Harris, A. (U Hawaii); Matías, O. (INSIVUMEH); Prata, A.J. (CSIRO, Australia); Realmuto, V.J. (JPL); Stix, J. (McGill Univ.); Swanson, G. (NOAA); Tupper, A. (Bureau Met., Australia); Vallance, J.W. (USGS); P. Wallace (U Oregon); Watson, M. (Bristol U)

Current: Elisabet M. Head (M.S. Geology); Marika P. Dalton (M.S. Geology); Samantha L. Reif (Ph.D. Geology); Jeremy M. Shannon (Ph.D. Geology); Armeda VanDam (M.S. Geology).

Graduated: Emily B. McCarthy (M.S. Geology, 2004); Yingxin Gu (Ph.D Geology, 2004, coadvise, McGill University); Song Guo (Ph.D. Geology, 2003, co-advise, McGill University); Sue Ellen Bunzendahl (M.S. Environmental Engineering, 2003, co-advise, Houghton County School District); Colleen M. Riley (Ph.D. Geology, 2002, co-advise, Northwestern University; Richard R. Cookman (M.S. Geology, 2000, UP Engineers, Marquette, MI);

Thesis : “Relationship between the aerosol number distribution and the cloud condensation nuclei supersaturation spectrum”

Selected to attend the Early Career Scientist Assembly (ECSA) at the National Center for Atmospheric Research, 2003

Selected to attend Atmospheric Chemistry Colloquium for Emerging Senior Scientists, 2001

• Spatial correlations among aerosol particles and their effect on cloud processes

Cantrell, W. and C. Robinson. Heterogeneous freezing of ammonium sulfate and sodium chloride solutions by long chain alcohols. Geophys. Res. Lett., in press, 2005.

Ochshorn, E. and W. Cantrell. Towards understanding ice nucleation by long chain alcohols, J. Chem Phys., in press, 2005.

Cantrell, W. and A. Heymsfield. Ice production in tropospheric clouds. Bull. Am. Meteorol. Soc., 86, 795-807, 2005.

Gochis, D., A. Barros, A. Gettelman, J. Wang, J. Braun, W. Cantrell, Y. Chen, A. Clement, N. Fox, B. Geerts, W, Han, M. Herzog, P. Kucera, R. Kursinski, A. Laing, C. Liu, E. Maloney, S. Margulis, D. Schultz, S. Sherwood, A. Sobel, H. Vömel, and Z. Wang. Meeting summary of UCAR/NCAR junior faculty forum on future scientific directions: The water cycle across scales working group. Bull. Am. Meteorol. Soc., in press, 2005.

Larsen, M., W. Cantrell, J. Kannosto, and A. Kostinski. Detection of correlations among aerosol particles. Aerosol Sci. Technol., 37, 476-485, 2003.

Larsen, M., W. Cantrell, A. Kostinski, and J. Kannosto. Response from authors to comment on “Detection of correlations among aerosol particles.” Aerosol Sci. Technol., 38, 129-130, 2004.

Ewing, George E., Michelle C. Foster, Will Cantrell, and Vlad Sadtchenko. Thin film water on insulator surfaces, In Water in Confining Geometries, Eds. J.Paul Devlin and Victoria Buch (Springer-Verlag, New York), pgs. 179 -212, 2003.

Dusek, U., D. Covert, A. Wiedensohler, C. Neusüss, D. Weise, and W Cantrell. Cloud condensation nuclei spectra derived from size distributions and hygroscopic properties of the aerosol in coastal south-west Portugal during ACE-2. Tellus B, 55, 35-53, 2003, doi: 10.1034/j.1600-0889.2003.00041.x

Cantrell, W., C. McCrory, and G. Ewing. Nucleated deliquescence of salt. J. Chem. Phys.,116, 2116-2120, 2002.

Cantrell, W. and G. Ewing. Attenuated (but not Total) Internal Reflection FTIR spectroscopy of thin films. Applied Spectroscopy, 56, 665-669, 2002.

Cantrell, W., G. Shaw, G. Cass, Z. Chowdhury, L. Hughes, K. Prather, S. Guazzotti, and K. Coffee. Closure between aerosol particles and cloud condensation nuclei at Kaashidhoo Climate Observatory. J. Geophys. Res., 106, 28711-28718, 2001.

Cantrell, W., and G. Ewing. Thin film water on muscovite mica. J. Phys. Chem. B, 105, 5435- 5439, 2001.

Cantrell, W. and C. Cooper, "Why don’t clouds fall out of the sky?," The PUMAS Collection, http://pumas.jpl.nasa.gov, 2001.

Cantrell, W., G. Shaw, C. Leck, L. Granat, and H. Cachier, Relationships between cloud condensation nuclei spectra and aerosol particles on a south-north transect of the Indian Ocean. J. Geophys. Res., 105, 15313-15320, 2000.

Cantrell, W., G. Shaw, and R. Benner. Cloud properties inferred from bimodal distributions. J. Geophys. Res., 104, 27615-27624, 1999.

Cantrell, W., G. Shaw, R. Benner, D. Veazey. Evidence for sulfuric acid coated particles in the Arctic air mass. Geophys. Res. Lett., 24, 3005-3008, 1997.

Ramanthan, V. + 39 others including W. Cantrell, Indian Ocean Experiment: An integrated analysis of the climate forcing and effects of the great Indo-Asian haze, J. Geophys. Res., 106, 28371-28398, 2001.

Ji, Q., G. Shaw, and W. Cantrell. A new instrument for measuring cloud condensation nuclei: Cloud Condensation Nucleus “Remover”. J. Geophys. Res., 103, 28013-28019, 1998.

Shaw, G.E., R.L. Benner, W. Cantrell, and A.D. Clarke. The regulation of climate: A sulfate particle feedback loop involving deep convection - An editorial essay. Climatic Change, 39, 23-33, 1998.

Wiedensohler, A., D. Orsini, D. Covert, D. Coffman, W. Cantrell, M. Havlicek, F. Brechtel, L. Russell, R. Weber, J. Gras, J. Hudson, M. Litchy. Intercomparison study of the size dependent counting efficiency of 26 condensation particle counters. Aerosol Sci. Technol., 27, 224-242, 1997.

Member of the National Center for Atmospheric Research's Ice Initiative Steering Committee.

Reviewed for National Science Foundation, Department of Energy, Petroleum Research Fund, CGRP, Journal of the Atmospheric Sciences, Atmospheric Environment, Journal of Geophysical Research – Atmospheres, Journal of the Optical Society of America, and Quarterly Journal of Royal Meteorological Society

B.S., with honors 1984 California Institute of Technology (Engineering and Applied Science)

Postdoctoral Res. Assoc. 1991 Geophys. Inst./Chemistry, Univ. Alaska (Atmospheric Chemistry)

2003–present Professor, Dept. of Civil & Environ. Engg., Michigan Technological Univ.

1998–2003 Assoc. Prof., Dept. of Civil & Environ. Engg., Michigan Technological Univ.

1992–1998 Assist. Prof., Dept. of Civil & Environ. Engg., Michigan Technological Univ.

R. C. Owen, O. Cooper, A. Stohl, and R. E. Honrath, An analysis of transport mechanisms of North American emissions to the central North Atlantic, J. Geophys. Res., submitted January 2006.

K. Lapina, R. E. Honrath, R. C. Owen and M. Val Mart´ın, Evidence of significant impact of large-scale boreal fires on tropospheric ozone levels in the midlatitude Northern Hemisphere, Geophys. Res. Lett., submitted January 2006.

R. E. Honrath, R. C. Owen, M. Val Mart´ın, J. S. Reid, K. Lapina, P. Fialho, M. P. Dziobak, J. Kleissl, and D. L. Westphal, Regional and hemispheric impacts of anthropogenic and biomass burning emissions on summertime CO and O3 in the North Atlantic lower free troposphere, J. Geophys. Res., 109, D24310, doi:10.1029/2004JD005147, 2004.

A. J. Hamlin and R. E. Honrath, A modeling study of the impact of winter–spring arctic outflow on the NOx and O3 budgets of the North Atlantic troposphere, J. Geophys. Res., 107, 10.1029/2001JD000453, 2002.

M. C. Peterson, R. E. Honrath, D. D. Parrish, and S. J. Oltmans. Measurements of nitrogen oxides and a simple model of NOy fate in the remote North Atlantic marine atmosphere. J. Geophys. Res., 103, 13,489–13,503, 1998.

Five Additional publications (reprints posted at http://www.cee.mtu.edu/_reh/)

J. Kleissl and R. E. Honrath, Analysis and application of Sheppard’s airflow model to predict mechanical orographic lifting and the occurrence of mountain clouds, J. Appl. Met., submitted September 2005.

J. Yang, R. E. Honrath, M. C. Peterson, J. E. Dibb, A. L. Sumner, P. B. Shepson, M. Frey, H.-W. Jacobi, A. Swanson and N. Blake, Impacts of snowpack emissions on deduced levels of OH and peroxy radicals at Summit, Greenland, Atmos. Environ., 36, 2523–2534, 2002.

J. Yang, R. E. Honrath, M. C. Peterson, D. D. Parrish, and M.Warshawsky. Photostationary state deviationestimated peroxy radicals and their implications for HOx and ozone photochemistry at a remote northern Atlantic coastal site. J. Geophys. Res., 109, doi:10.1029/2003JD003983, 2004.

R. E. Honrath, S. Guo, M. C. Peterson, M. P. Dziobak, J. E. Dibb, and M. Arsenault. Photochemical production of gas-phase NOx from sunlight irradiation of ice-crystal NO−3 , J. Geophys. Res., 105, 24,183-24,190, 2000.

M. C. Peterson and R. E. Honrath, NOx and NOy over the northwestern North Atlantic: Measurements and measurement accuracy, J. Geophys. Res., 104, 11,695-11,707, 1999.