(Nov. 30, 2010)--After spending two months in the Arctic Ocean aboard the Chinese vessel Xuelong or "Snow Dragon," Hongjie Xie, UTSA associate professor of geological sciences, says global warming is both real and imminent. In fact, Arctic ice is melting faster than researchers thought it would.
While much of the global-warming debate has focused on the reasons for global warming and the disadvantages brought on by it, such as the impact on Arctic ecology, marine mammals and indigenous communities, Xie says the Chinese believe it also creates a significant opportunity.
"Global warming in the Arctic is an extremely hot topic in navigation," said Xie, who manages the UTSA Laboratory for Remote Sensing and Geoinformatics. "The Chinese are extremely interested because they and others would be able to sail their cargo ships through the Arctic Ocean to North America and Europe with much reduced cost. At the melting rate we are observing now, they may be able to do so in 30 to 50 years."
"In the past, travelers could only get to the lowest Arctic latitudes in the summer season, but now the ice has melted so much, large ships can navigate into the higher latitudes. Xuelong traveled to 88.4 degrees latitude with no problems. A few years ago, we could not have done that. We would have run into ice blocks three meters or more in thickness."
He notes, however, "While there is a great opportunity, Arctic navigation is a complex issue. Those involved will need to consider a variety of factors such as environmental pollution, oil spills, search and rescue, national security and navigation rights in territorial waters."
Xie and a scholar from the University of Georgia were the only Americans invited to take part in the fourth Chinese Arctic Expedition, a two-month data-gathering trip organized by the Chinese government. The trip served as a fact-finding mission for Xie, who represented the U.S. National Oceanic and Atmospheric Administration's Sea Ice Outlook program. The Chinese focused their research on the mechanisms of sea ice melting, the impact of that melting on the Arctic ecosystem and how it might affect the Chinese climate.
In all, 61 researchers, 54 crewmembers and six Chinese journalists participated in the expedition. They represented France, Finland, Taiwan, Estonia, the United States and numerous Chinese universities and research programs.
So, why does Xie think Arctic sea ice is melting so rapidly?
"It's a positive feedback system," he said. "Sea ice melts both from the bottom up due to increased ocean temperature and from the top down. When that happens, the melted ice leaves more open water, which absorbs more solar radiation and raises the temperature of the water even more. The temperature increase causes even more ice to melt and so on and so forth."
While in the Arctic, Xie took photos, videos and quantitative measurements of Arctic sea ice during his journey. That "in situ" data will be combined with satellite data to help researchers across the world better understand Arctic climate and change.
Xie launched his career in 2002 after earning his doctorate in remote sensing and geographic information systems (GIS) at the University of Texas at El Paso. In 2004, he joined UTSA's faculty. He and world-renowned sea ice scientist Stephen Ackley, a UTSA research associate professor, gained funding from the National Science Foundation Office of Polar Programs and the National Aeronautics and Space Administration Cryosphere Science program.
Since then, Xie and his group have taken two expeditions to Antarctica (2006 and 2007) in addition to his 2010 Arctic expedition. Xie and Ackley will send researchers and students on two additional Antarctic sea ice trips in November and December 2010. Xie hopes to participate in the 2012 Chinese Arctic expedition by sending a couple of UTSA graduate students as well.
President Taylor Eighmy is inviting all UTSA faculty and staff to "Tacos With Taylor." Take the opportunity to introduce yourself to the President at any one of these casual meet and greets.
Frio Street Building, Food Court Commons Area, Downtown Campus
Celebrate 40 years of BestFest, an annual event hosted by Roadrunner Productions as a part of UTSA Homecoming festivities. The event will feature a carnival, food and drink booths, a golf cart parade, firework and live music from Anthem.
Brackenridge Lot 1, Main Campus
Celebrate homecoming as the Roadrunners take on Rice. Come early for the Spirit Walk, tailgating, games, music and food. Stick around for a halftime show with SOSA and the crowning of Mr. and Ms. UTSA.
Alamodome, 100 Montana St., Downtown San Antonio
The Leadership Storytelling Homecoming Brunch brings together UTSA alumni and students to share a delicious meal as well as a roundtable conversation about how experiences in college carry us forward on unique leadership journeys.
University Center, Denman Room (UC 2.01.28), Main Campus
The conference is dedicated to sharing recent knowledge and experiences gained in the area of Big Data by researchers in academia, industry and the government sectors within the areas of business, national security, infrastructure, healthcare and visualization. The conference fee is $45 and includes breakfast, lunch & parking. Free for students and non-academic government employees. Register here: https://www.regonline.com/UTSAdataconference2017.
H-E-B University Center Ballroom (HUC 1.104), Main Campus
Former National Security Advisor Susan Rice, via webcast, will examine America’s economic, political and security relations with China during CHINA Town Hall, an 80-city live discussion and Q&A on China and Sino-American relations.
Building Building, Richard Liu Auditorium (BB 2.01.02), Main Campus
The African American Studies program proudly presents William "Cruz" Shaw, San Antonio City Councilman and UTSA Alumnus. Event is free and open to the public.
University Center, Retama Auditorium (UC 2.02.02), Main Campus
The graduate fair is an opportunity for the UTSA student body and local San Antonio community to learn about graduate education opportunities. The event is free and open to the public.
H-E-B University Center Ballroom (1.104), Main Campus
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