![\"researchers](\"http:\/\/stage.headlessnauedu-b6hgdzckfdgxgzhe.westus-01.azurewebsites.net\/wp-content\/uploads\/2015\/09\/Kaufman-research-e1443627078198.jpg\")
<\/a>During the spring and summer of 2015, four successive groups of researchers and students from Northern Arizona University performed what they called \u201ctag team\u201d science at Lake Peters in the Arctic Wildlife Refuge. The multidisciplinary groups were gathering data for a $1 million, three-year National Science Foundation project<\/a> funded by the NSF\u2019s Arctic System Science Program.<\/p>\n \u201cOne thing the climate science community is working hard to understand is the challenging problem of how climate varies on time scales longer than what we can observe,\u201d said Nick McKay<\/strong>, assistant professor at NAU and a member of the fourth research team. \u201cWe think climate models under-predict decadal to century-scale changes in climate.\u201d<\/p>\n Sediment samples from Arctic lakes offer insights, and NAU Regents\u2019 Professor Darrell Kaufman<\/strong> has been pursuing them for years. His research for the School of Earth Sciences and Environmental Sustainability has involved the collection and analysis of sediment cores for clues about climate and environment. But local, short-term variables introduced new questions.<\/p>\n \u201cWe realized we needed to do more groundwork to understand those complicated systems,\u201d Kaufman said.<\/p>\n McKay said glacier-fed lakes are ideal targets for study because \u201cglaciers are excellent recorders of long-term climate variability. Unlike living organisms, which have strategies to overcome changes in climate, glaciers don\u2019t.\u201d<\/p>\n But the catchment system involving a glacier and lake is also susceptible to changes in the watershed that cannot be explained solely by climate. So the teams set about to generate more data from Lake Peters in northern Alaska, then take the ambitious step of creating a data network with two other well-studied Arctic lakes, one in southern Alaska and the other on an island near Norway.<\/p>\n \u201cWe\u2019re trying to combine field observations with models that simulate sediment transfer from the glaciated catchment to the lake,\u201d Kaufman said. \u201cIf we can build the model, then we can turn knobs and ask questions about future outcomes.\u201d<\/p>\n According to McKay, \u201cNo one has ever tried to do what we\u2019re doing\u2014simulate a whole watershed like this. Hopefully the model is good enough that we can ask some of our questions and get meaningful answers.\u201d<\/p>\n While the work being done this fall consists mostly of analysis and modeling, the \u201cFieldwork in general is a roller coaster,\u201d Kaufman said. \u201cWhen conditions are good, there is no more beautiful place on earth. But when the mosquitoes are swarming or a storm is coming up, sometimes you want to be someplace else.\u201d<\/p>\n After a winter of data analysis, teams will return to the site next summer for two more rounds of fieldwork. Kaufman said three students have joined the project this fall, including master\u2019s degree students from geology and geography, and a Ph.D. student from the School of Earth Sciences and Environmental Sustainability. The school and the Department of Geography, Planning and Recreation provided the four lead investigators: Kaufman, McKay, Erik Schiefer<\/strong> and David Fortin<\/strong>.<\/p>\n Summer 2015 fieldwork participants included: Team 1\u2013Kaufman, Fortin, Cody Routson<\/strong>, and Mindy Bell<\/strong>; Team 2\u2013Fortin (continuing), Schiefer and Doug Steen<\/strong>; Team 3\u2013Anna Liljedahl<\/strong>, Mike Loso<\/strong>, Maryann Ramos<\/strong> and Anne Gaedeke<\/strong>; Team 4\u2013McKay, Fortin, Ethan Yackulic<\/strong> and Rebecca Ellerbroek<\/strong>.<\/p>\n <\/p>\n","protected":false},"excerpt":{"rendered":"<\/a>labor of the summer<\/a> involved spending quality\u2014and sometimes not so quality\u2014time at a remote outpost. The G. William Holmes Research Station, established in 1958, was in good condition and a day hike from the glacier, Kaufman said.<\/p>\n