In memoriam: Wayne Robert Rouse 1937–2024

Wayne R Rouse by MK Woo On July 26, 2024, the Canadian academic community lost one of its pioneering climatologists, Wayne R. Rouse, professor emeritus of McMaster University. A member of the McMaster Geography department (later School of Earth, Environment and Society) for 30+ years, Wayne was widely recognized as a dedicated, passionate, and adventurous scientist. During his early undergraduate training at McMaster and graduate research at McGill, Wayne was profoundly influenced by a cast of Canada's leading physical geographers, especially Dr. Kenneth Hare. Even then in the 1960s, he was exposed to the notion of a changing climate and related concepts forming a basis for inquiry that persisted throughout his academic career. Wayne's contributions to research and graduate mentorship have left an indelible mark on our understanding of the climate and hydrology of Canada's Subarctic environments. Wayne modestly detailed his career path, understanding and approach to research, and significant achievements in a highly enlightening Personal Odyssey in 2008 (Rouse, 2008). Here in his memory, we offer our reflections on Wayne as a mentor and colleague, highlighting his distinguished career and contributions to knowledge and training. By his own admission, serendipity brought Wayne to the field of climatology that would become his life's work for the next 40 years. With no formal climatology training, he undertook an MSc project at McGill in tropical climatology in Barbados, followed by his PhD on the micrometeorology of Mount St. Hilaire south of Montreal. During this research, Wayne was deeply intrigued by the connections between the surface water and energy balances and the climate system. Upon arriving at McMaster as an Assistant Professor, Wayne was inspired by the northern field research that most of his climatology and hydrology colleagues were engaged in, leading to his life-long passion for the Canadian Subarctic. Wayne's first endeavor was a foray into the Subarctic James Bay environment, where he examined how surface vegetation controlled energy and water exchanges, later pursuing some of the same research linkages in the southern Northwest Territories above Lake Athabasca. These experiences were instrumental in his involvement in a large multi-disciplinary study of Ontario's northern coastal environments as part of TASO (Technology Assessment of Subarctic Ontario), where he comfortably collaborated with biologists, anthropologists, and economists. In those early years, we learned that Wayne was the embodiment of the adage, “Genius is ten percent inspiration and ninety percent perspiration.” In the field, we were introduced to the work ethic every day around 5:00 am when he would bellow “Wakee, Wakee. There's fresh coffee on the stove.” After all, the sun had risen four hours earlier! As we then hiked several kilometres on the tundra to the research site, we welcomed hearing the faint drone of the generator getting louder, for it was powering banks of strip-chart recorders, stacked floor to ceiling, inside tents. This was well before the digital age, wherein every twitch of a pen would etch on paper how sunlight intensity was changing, how water levels were responding, and how heat entering the ground was thawing the permafrost. These scrolls would form the evidence required to develop the science of environmental change in the Subarctic. In the late 1970s, Wayne made his way to Churchill, Manitoba. With support from the newly founded Churchill Northern Studies Centre, he established a research program assessing the energy, water, and later, carbon balances of the coastal Subarctic environments. For over two decades, it was a period of highly productive research and proving ground for many graduate and undergraduate students. The research involved land-, lake-, and ocean-based climate stations, balloon ascents, and even an ill-fated experiment with instrumented model airplanes. These efforts resulted in numerous graduate theses and dozens of peer-reviewed articles highlighting key discoveries concerning the influence exerted by Hudson Bay on the terrestrial environment. For all those involved, it was an indelible source of many unforgettable memories. With his established reputation as one of Canada's leading experts in Subarctic climates, in the mid-1990s Wayne became one of the principal researchers in the large multidisciplinary study called MAGS (Mackenzie GEWEX Study). Its objectives were to develop our understanding of the role of North America's largest river basin, the Mackenzie, in the climate system through measurements and modelling of its energy and water cycles. Wayne assumed a leadership role in the first phase of MAGS and his own research contributions elucidated the role of lakes in this environment, including some groundbreaking studies on Canada's northern great lakes—Great Slave Lake and Great Bear Lake. Wayne formally retired from McMaster in 1999, but went on to research and write for many years after, primarily concentrating on the findings from MAGS. Wayne greatly appreciated the mentorship he received as a student and early-career academic and embraced that same role throughout his career. He was passionate about Geography as a discipline, attracted to its inherent interdisciplinary nature. As such, he was a strong supporter of the Canadian Association of Geographers (CAG). These two elements came together, when in 1979/80 the CAG invited Wayne to undertake a speaking tour across several Canadian universities. It was during his stop at Brandon University where a keen, but a little nervous undergraduate (PML) showed his microclimate project to the distinguished speaker. Wayne was patient, asked probing questions, all the while providing encouragement to “keep at it.” On that visit, he planted the seed that the student should consider graduate studies at McMaster. I applied and received a phone call from Wayne saying that he would be pleased to serve as my supervisor. However, it was a bit daunting to move from a small town in Manitoba to Hamilton and the offer was declined in favour of one from a smaller school (Trent). After completing my MSc degree, Wayne again contacted me and asked if I was interested in a PhD. This time I accepted and began my own journey in academia, which would likely not have occurred without the encouragement and inspiration I received from Wayne during that CAG-sponsored tour. Wayne's collaborations with the CAG continued, marked by the publication of the book Surface climates of Canada as part of the CAG publication series (Bailey et al., 1997). And in 1998, the CAG presented Wayne with the Award for Scholarly Distinction in Geography. To those who knew and worked with Wayne, he was the consummate field scientist, driven by a sense of adventure and discovery, constantly adapting to accelerating technological advances, new directions in research, and sometimes following the path less trodden. One of his greatest assets was his knack for surrounding himself with talented people (colleagues, students, and technicians). He trusted his students, would listen to their ideas, and then facilitate their forging ahead. One such example stands out. For several reasons, not the least of which was the red tape involved, buying a vehicle with NSERC funds was not an easy task in 1990. Yet, when pressed to do so by his technician and graduate students and after some convincing, he was receptive to the idea. Although Wayne immediately recognized the cost savings of such an endeavour, he was ultimately swayed by the benefits and flexibility that it would provide for his researchers. Hence, the red van became as important to the success of the Churchill research program as any piece of scientific equipment. Wayne Rouse left a formidable legacy of scholarly contributions and mentorships and was a staunch believer in passing on the learned experience. He shared his wonderment about the environment with a generation of young scientists, and perhaps more importantly, imbued in them the resolve required to understand how it works. We thank Dr. MingKo (Hok) Woo for his encouragement to undertake this project and useful suggestions on the text. Hok also penned the artwork of Wayne in 1999, depicting his characterization with a view from Hamilton Mountain (part of the Niagara Escarpment) as the backdrop.

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