Mountain Views Vol. 11, No. 1
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Mountain Views Chronicles of the ConsorƟ um for Integrated Climate Research in Western Mountains CIRMOUNT Informing the Mountain Research Community Volume 11, Number 1 • May 2017 Goshawk, East Humboldt Range, Nevada, by Mackenzie Jeffress Front Cover: Wizard Island—Crater Lake, Oregon, by Jim Blanchard Editor: Connie Millar, USDA Forest Service, Pacifi c Southwest Research Station, Albany, California. Layout and Graphic Design: Diane Delany, USDA Forest Service, Pacifi c Southwest Research Station, Albany, California. Back Cover: Crater Lake Highway Snow Shadow Patterns, by Jim Blanchard Read about the contributing artists on page 69. Mountain Views Chronicles of the Consortium for Integrated Climate Research in Western Mountains CIRMOUNT Volume 11, No. 1, May 2017 www.fs.fed.us/psw/cirmount/ Table of Contents Editor's Introduction Connie Millar 1 Snow Overview Articles Defi ning Snow Drought and Why It Matt ers Adrian Harpold, Mike Dettinger, and Seshadri 2 Rajagopal Advances in Snow Hydrology and Water Management Thomas Painter 7 with the NASA Airborne Snow Observatory (ASO) Snowshoe Hares: A Deadly Game of Hide and Seek L Scott Mills 9 Brevia Elevated Precipitation Uncertainty: Diff erences in Gridded Brian Henn 13 Precipitation Datasets across the Mountainous West Snowmelt Rate Dictates Streamfl ow Theodore Barnhart, Noah Molotch, Ben Livneh, 19 Adrian Harpold, John Knowles, and Dominik Schneider Water and Life from Snow: A Trillion Dollar Question Matthew Sturm, Michael Goldstein, and Charles 22 Parr Life in the Snow: Characterizing Microbial Communities Chelsea Carey, Stephen Hart, Sarah Aciego, Clifford 24 in the Subalpine Zone of the Sierra Nevada, California Riebe, Molly Blakowski, and Emma Aronson Autumn Snowfall Controls the Annual Radial Growth of Kimberly Carlson, Bethany Coulthard, and Brian 28 Centenarian Whitebark Pine (Pinus albicaulis) in the South- Starzomski ern Coast Mountains, British Columbia, Canada Competition and Facilitation May Lead to Asymmetric Ailene Ettinger and Janneke HilleRisLambers 32 Range Shift Dynamics with Climate Change Interviews Greg Greenwood 35 Chris Daly 40 TABLE OF CONTENTS ii Mountain Views • May 2017 News and Events PACLIM 2017: March 5-8, 2017 Michelle Goman and Scott Mensing 44 Book Review: Microclimate and Local Climate Andrew Carleton 46 New Book: Tree Lines, by Valerie Cohen and Michael Cohen 48 New Book: Hopping Ahead of Climate Change, by Sneed B. 49 Collard III CIRMOUNT Updates Snowspott er: Citizen Scientists Help Hydrologists Analyze 50 Forest Snow Interception Patt erns Voices in the Wind Question: How do you think warm snow drought and dry snow 51 drought have aff ected or will aff ect the systems you study, in particular, eff ects on forests/plants, animals, disturbance? What kinds of information about snow droughts and the diff erent causes would be most useful to your research? Replies from: Martha Apple, Tara Barrett , Lindsay Bourgoine, Jeff Dozier, Jeff Holmquist, Dan Isaak, Mike Koontz , Bella Oleksy, Eryn Schneider, and Matt Shinderman First Person Naming the Beast: Overcoming Obstacles to Women in Science Toni Lyn Morelli 57 Field Notes Searching for Pikas in the Himalaya: Diff erent Cultures, Nifer Wilkening 60 Common Landscapes Did You See It? Winter of 2016-2017 and the Mystery of the Pine-Branch Cast Connie Millar 67 Contributing Artists Valerie Cohen, Michael Cohen 69 Jim Blanchard Mackenzie Jeff ress Mountain Visions Tree Lines Valerie Cohen and Michael Cohen 70 EDITOR'S INTRODUCTION For many parts of the mountainous West, the winter of 2016-2017 his guidance and strategic thinking for many years. Here is a achieved epic signifi cance through relentless atmospheric rivers chance to honor and thank Greg for his support and dedication to that yielded record snowdepths. Coming as it did on the heels of mountain science and sustainability around the world. Another record drought years, the wet winter brought welcome relief to longtime CIRMOUNT colleague, Chris Daly, creator and arch- water- and snow-stressed mountain ecosystems, and also now genius of the PRISM climate model, also generously offered affords abundant opportunity for curious mountain scientists to responses to the open-ended questions I posed about his career observe the effects of extreme interannual variability. In this issue and the path to developing PRISM. of Mountain Views Chronicle we present articles, Brevia, and imagery centered around the theme of snow. Our CIRMOUNT colleagues, Adrian Harpold, Mike Dettinger, and Seshadri I am especially grateful to Toni Lyn Morelli for her thoughtful Rajagopal, proposed a useful distinction in the relationships of and carefully-researched essay on the role of women in science. snow, water, and drought through their 2017 article in EOS on dry Unconsious biases lurk where we least expect them, and with snow drought (low winter precipitation) and warm snow drought humor and compassion Toni Lyn helps to uncover those. As a (lack of snow accumulation due to warm temperatures). We pika enthusiast, I am delighted that Nifer Wilkening was willing are pleased to reprint this article on page 2, and include Brevia to share her adventures seeking the Royle's pika in the high articles that summarize recent papers on a diversity of snow Himalaya. Along with other contributions of art and prose, we issues as well. The Voices in the Wind section for this issue also usher in the spring melt and welcome summer. May your travels responds to ideas in the EOS article. be prosperous and contain many mountain adventures. I draw your attention to two interviews of notable CIRMOUNT colleagues. Greg Greenwood has recently retired after thirteen years as Executive Director for the international Mountain Research Initiative. Greg was an important founder and supporting coordinator of CIRMOUNT; we have looked to —Connie Millar, May 30, 2017 ARTICLES The following article is reprinted with permission from the American Geophysical Union. Harpold, A. A., M. Dettinger, and S. Rajagopal. 2017. Defi ning snow drought and why it matters, Eos, 98, https://doi.org/10.1029/2017EO068775. Published on 28 February 2017. Defi ning Snow Drought and Why It Ma ers Adrian A. Harpold1, Michael Dett inger2, and Seshadri Rajagopa3 1 Department of Natural Resources and Environmental Science, University of Nevada, Reno, Reno Nevada 2 U.S. Geological Survey, National Research Program, Carson City, Nevada 3 Division of Hydrologic Sciences, Desert Research Institute, Reno, Nevada Swings from snow drought to extreme winter rainfall make drought,” a term that’s gaining traction in both scientifi c and lay managing reservoirs, like the Oroville Dam, incredibly diffi cult. literature. But what exactly is "snow drought"? Snow drought refers to the combination of general drought and reduced snow storage. However, among references to snow drought, we observe conditions that refl ect • a lack of winter precipitation or • a lack of snow accumulation during near-normal winter precipitation We propose a new classifi cation to differentiate “dry snow drought” from “warm snow drought.” These two uses of snow drought have different scientifi c underpinnings and different implications for water supply forecasting and management. To clarify future uses of this terminology, we propose a new classifi cation to differentiate “dry snow drought” due to lack of A snowboarder threads his way through patches of dirt at Squaw precipitation from “warm snow drought,” where temperatures Valley Ski Resort on 21 March 2015 in Olympic Valley, Calif. prevent precipitation from accumulating on the landscape as a Photo: Max Whittaker/Getty Images snowpack. On 12 February, water resource managers at the Oroville Here we use snow conditions during winter 2015 on the West Dam issued an evacuation warning that forced some 180,000 Coast of the United States to illustrate the difference. We also Californians to relocate to higher ground. The story of how show how snow drought, if not properly incorporated into conditions got to this point involves several factors, but two management decisions, can heighten the potential for emergency clearly stand out: the need to prevent water shortages during a situations like the one unfolding at Oroville Dam. record drought, followed by one of the wettest October–February periods in California history. Subtle Defi nitions with Important Implications The situation at Oroville Dam highlights diffi culties that Drought means different things in different contexts. many reservoir managers face in managing fl ood risks while “Meteorological drought” is defi ned as a period of below-average simultaneously storing water to mitigate severe droughts and precipitation. “Hydrological drought” refers to water storages and smaller snowpacks. Central to this diffi culty is the idea of “snow fl uxes falling below long-term averages. Mountain Views • May 2017 3 ARTICLES Students from the University of Nevada, Reno, learning how to measure streamfl ow at Sagehen Creek Field Station in California’s Sierra Nevada during a small rain-on-snow event in March 2016. Winter rain during drought, or warm snow drought, has different management implications than dry winters, or dry snow drought. Photo: Adrian Harpold Then there’s “anthropogenic drought,” the phenomenon of how for water management in the westernmost United States. The most projections of future drought include increases in severity winter was abnormally warm, with temperatures in the Pacifi c and duration that refl ect increasing water demand due to warming Northwest (Washington, Oregon,