[All-postdocs] Fwd: NOAA Seminar tomorrow: Dissolved Oxygen Dynamics in Chesapeake Bay

[Yizhen Li - NOAA Affiliate]

All,

We are hosting the one NOAA seminar, starting from Malcom Scully at AOPE.
You are all welcome to call in and listen.

Best Wishes,
Yizhen

---------- Forwarded message ----------
From: Tracy Gill - NOAA Federal <tracy.gill at noaa.gov>
Date: Wed, Mar 29, 2017 at 11:28 AM
Subject: NOAA Seminar tomorrow: Dissolved Oxygen Dynamics in Chesapeake Bay
To:


OneNOAA Science Seminar Series
*Please forward this to folks who might be interested; thanks*.

*Title: Dissolved Oxygen Dynamics in Chesapeake Bay*

Speaker: Malcolm Scully, physical oceanographer and associate scientist
with tenure Woods Hole's Applied Ocean Physics and Engineering Group.
Presenting remotely from Woods Hole.

When: Tomorrow, March 30, 2017, 12-1pm ET

Where: Via webinar (see login info below) or at NOAA Silver Spring, SSMC4,
Room 8150

Sponsor: NOAA's National Ocean Service Science Seminar;This is the start of
a New Seminar Series:* Recent Advances in Coastal **Physical Oceanography,
hosted by Yizhen.Li at noaa.gov <Yizhen.Li at noaa.gov> and Tracy.Gill at noaa.gov
<Tracy.Gill at noaa.gov> *

Remote Access: Mymeeting webinar uses phone for and internet. Audio is only
available over the phone: dial toll-free from US or CAN: 1-877-708-1667
<(877)%20708-1667>. Enter code 7028688#
For the webcast, go to www.mymeetings.com  Under "Participant Join", click
"Join an Event", then add conf no: 744925156. No code is needed for the
web. Be sure to install the correct plug‐in for WebEx before the seminar
starts (temporary plugin works fine).

Abstract: Physical processes play an important role in modulating low
dissolved (hypoxia) in estuaries. This is illustrated using both field
observations and numerical simulations from Chesapeake Bay. The field
observations demonstrate how wind-driven circulation interacts with
estuarine bathymetry to control when and where vertical mixing of dissolved
oxygen occurs.  These data highlight that the supply of oxygen to deep
regions susceptible to hypoxia cannot be thought of as a simple 1-D process
in the vertical, but rather a complex 3-D processes that is heterogeneous
in both time and space.  Oxygen is not supplied to sub-pycnocline waters
directly by vertical mixing, but rather by horizontal advection of water
mixed somewhere else.  To quantify the role that physical processes play in
controlling inter-annual variations in hypoxia, a numerical circulation
model with a very simple representation of dissolved oxygen dynamics is
used to simulate hypoxia in Chesapeake Bay for the 30-year period
1984-2013.  The model assumes that the biological utilization of dissolved
oxygen is constant in both time and space in an attempt to isolate the role
that physical processes play in controlling hypoxia.  Despite the
simplicity of the model it demonstrates skill in simulating the observed
inter-annual variability of hypoxic volume, capturing 50% of the observed
variability in hypoxic volume (< 2 mg/L) for the month of July and 58% of
the observed variability for the month of August, over the 30-year period.

About the Speaker: Dr. Malcolm Scully is a physical oceanographer and an
associate scientist with tenure in Woods Hole's Applied Ocean Physics and
Engineering Group.  His research interests include: estuarine dynamics;
boundary layer and stratified turbulence; Langmuir circulation;
low-dissolved oxygen (hypoxia) in estuaries; and fine sediment transport.
He has authored and co-authored numerous peer-reviewed journal articles,
book chapters, and more. Malcom earned a BA in Environmental Science from
the University of Virginia in 1993, his MS in Marine Science from the
College of William and Mary, School of Marine Science in 2001, and his PhD
also from William and Mary in 2005.

Subscribe to the OneNOAA Science Seminar weekly email: Send an email to
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in the subject or body. See http://www.nodc.noaa.gov/seminars/

-- 

Tracy A. Gill   tracy.gill at noaa.gov   240-533-0349
<(240)%20533-0349>Physical Scientist, NOAA <http://www.noaa.gov/>/NOS
<http://oceanservice.noaa.gov/>/NCCOS
<http://coastalscience.noaa.gov/>/CCMA
<http://coastalscience.noaa.gov/about/centers/ccma>, Biogeography
Branch1305 East-West Hwy, # 9208, Silver Spring, MD  20910

*Check out NOAA's **NCCOS Website <http://coastalscience.noaa.gov/>*
*for more on our projects, products and news.*

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