Cooperative Institute for Research in Environmental Sciences



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ESOC Weekly Coffee

ESOC Weekly Coffee

ESOC Reading Room

date

Wednesday, September 19, 2018
9:00am to 10:00am

location

ESOC Reading Room

contact

Ashley.Olson@colorado.edu
2018-09-19
 
Cryospheric and Polar Processes Seminar

Cryospheric and Polar Processes Seminar

Modelling the Annual Cycle of Antarctic Sea ice Extent by Marilyn Raphael, UCLA Department of Geography

Satellite-observed, total Antarctic sea ice extent (SIE) experiences a distinct annual cycle, peaking
in September and troughing in March on average. The amplitude and phase of the annual cycle
also varies regionally. What forces the observed annual cycle and its variations is not completely
understood. The annual cycle may be calculated by simply taking the average SIE for each day of
the year. However, while simple and transparent, this method produces a value that is subject to
substantial variation since it is based on fewer than 40 numbers, one for each year of observed
data. It also disguises the fact that the annual cycle might be slowly changing phase and that the
amplitude as well as shape of the daily extent might vary. Here, we present a model that allows the
mathematical and stochastic representation of the proximate forces that lead to the observed
annual cycle of sea ice extent. These mathematical and stochastic methods allow amplitude and
phase dilation and contraction. Thus, the annual cycle is not constrained to be a fixed cyclical
pattern rather, it is a pattern that allows both temporal dilation and contraction as well as amplitude
modulation. We use this model in an ensemble interpolation to reconstruct missing daily data in
the early part of the satellite- observed sea ice data set. Results are presented and discussed.

date

Wednesday, September 19, 2018
11:00am to 12:00pm

location

RL-2, Room 155

Event Type

NSIDC

contact

Mistia.Zuckerman@colorado.edu
2018-09-19
 
CSTPR Noontime Seminar

CSTPR Noontime Seminar

Private forest owners and climate change adaptation: How science and society will shape future forests
by Angela Boag, Environmental Studies Program, University of Colorado Boulder

This talk will be available via live webcast. To view the live webcast please go to Adobe Connect and login as a guest.

Angela Boag Widespread wildfires in western North America this year, last year, and indeed this past decade, demonstrate the real-time impacts of climate change. Unprecedented wildfires are also the result of decades of well-intentioned but counterproductive forest management and planning policies. Private forest owners now find themselves managing for increasing levels of risk. In this talk I explain how climate change impacts private forest owners in the West. My research asks how can private forest owners adapt to climate change, and how are they adapting now? In rural eastern Oregon, intentional climate change adaptation among forest owners is uncommon, though many individuals are adapting unintentionally. Forest management decisions are influenced by individual perceptions of risk, as well as local economic, social and regulatory factors, including regional wood product markets. Opportunities for enhancing the adaptive capacity of private forest owners include more resources for formal forest management planning, place-based education, and cooperative approaches among landowners. As forest management policies evolve at state and federal levels, management decisions on public lands will inevitably impact adaptive capacity on private lands.

Angela Boag is a PhD student at the University of Colorado Boulder investigating the relationships between private forest management and the changing environment in eastern Oregon.  She has a background in botany and also worked for community-based non-profit organizations before returning to graduate school.  Now a member of the Community and Forests in Oregon (CAFOR) research project, Angela's research focuses two questions: 1) What types of environmental change do forest owners perceive, and how do these perceptions influence forest management decisions? and 2) What adaptive actions are needed to promote sustainable relationships between people and forests as climate and forest disturbance patterns change?

date

Wednesday, September 19, 2018
12:00pm to 1:00pm

location

CSTPR Conference Room

Event Type

CSTPR

resources

2018-09-19