Scientific
Colloquium
June 10, 2015, 3:30 p.m., Building 3 Auditorium
WILLIAM NORDBERG MEMORIAL LECTURE
Claire Parkinson
NASA
Goddard Space Flight Center
Winner of the 2015 Nordberg Award
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"Climate Change As Revealed in Satellite Sea Ice
Observations"
Satellite technology has converted sea ice from being
among the worst observed to among the best observed of
all climate variables, providing a detailed daily record
of sea ice distributions in both polar regions. Despite
considerable interannual variability, both the Arctic
and the Antarctic sea ice covers show trends since the
late 1970s that rise well above the background noise. In
the Arctic those trends are downward, firmly in line
with the expectations for a warming climate, but in the
Antarctic the overall trends are upward, quite counter
to most expectations. The Arctic ice losses far exceed
the Antarctic ice gains, yielding a deceasing global sea
ice cover. The result is a sea ice situation similar to
the situation with climate change more broadly, namely,
observed changes that match expectations on the
large-scale but have unexpected features that keep
scientists on their toes seeking explanations for what
was unexpected, longer and more complete data records,
and improved model formulations.
Biographical Information
Claire Parkinson has been a scientist at NASA Goddard
since July 1978, with a research emphasis on polar sea
ice and climate change. Although her research has mostly
involved satellite remote sensing, she has also
developed a computer model of sea ice and has done field
work in both the Arctic and the Antarctic. Since May
1993, she has additionally been Project Scientist for
the Earth-observing Aqua satellite, which launched in
2002. She has written books on satellite observations of
the Earth, climate change, and the history of science,
and has co-written a book on climate modeling and
several books on satellite data and results from those
data about our changing planet. Claire has a B.A. from
Wellesley College, where she was elected to Phi Beta
Kappa and Sigma Xi, and a Ph.D. from Ohio State
University. She is a Fellow of the American
Meteorological Society and the American Association for
the Advancement of Science, a member of the National
Academy of Engineering and the American Philosophical
Society, and Chair of the NASA Goddard Senior Fellows.