[Esip-infoquality] Fwd: Tuesday's NCEI Seminar Series

Ge Peng - NOAA Affiliate ge.peng at noaa.gov
Fri Feb 22 09:04:44 EST 2019

This NCEI seminar next Tues right before our IQC telecon may be of interest
to some of you ...

---------- Forwarded message ---------
From: Fred Burnett - NOAA Affiliate <fred.burnett at noaa.gov>
Date: Fri, Feb 22, 2019 at 7:55 AM
Subject: Tuesday's NCEI Seminar Series
To: <NESDIS.STAR.All at noaa.gov>, 14th WS <14WS_CC at us.af.mil>, 14th WS.WX <
14WS.WX at us.af.mil>, _NESDIS NCEI ALL <NESDIS.NCEI-All at noaa.gov>, Heather
Dinon Aldridge <hadinon at ncsu.edu>

Tuesday’s NCEI Seminar Series will be Boyin Huang with, “Uncertainty
estimates for sea surface temperature and land surface air temperature in
NOAAGlobalTemp version 5.”

NOAA global surface temperature (GST) version 5 (NOAAGlobalTemp v5) is
created by merging the sea surface temperature (SST) from the Extended
Reconstructed SST version 5 (ERSSTv5) and the land surface air temperature
(LSAT) from the monthly Global Historical Climatology Network version 4
(GHCNm v4). The SST and LSAT are reconstructed using a maximum of 140 and
65 modes in the oceans and over the land surface, respectively.

The GST uncertainty is estimated over the oceans and land surface
separately. The total uncertainty in SST and LSAT consists of parametric
and reconstruction uncertainties. The parametric uncertainty represents the
dependence of SST and LSAT reconstructions on the selection of the internal
parameters of the reconstruction systems. The parametric uncertainty is
estimated by the standard deviation of the 1000-member ensemble using
historic observations from 1854 to 2016. The ensemble members are created
by perturbing 28 SST and 6 LSAT internal parameters by 50 to 100%. The
reconstruction uncertainty represents the residual error due to using
limited number of SST and LSAT modes. The reconstruction uncertainty is
approximated by the root-mean-square difference between pseudo-observations
from independent model simulations and their reconstructions.

It is found that the uncertainties in SST (0.9°C) and LSAT (0.5°C) at local
grid scale are larger in the earlier period (1880s–1910s) and during the
World Wars I and II due to sparse observations. In contrast, the
uncertainties are smaller (0.6°C and 0.3°C) in the modern period
(1950s–2010s) due to increasing number and area coverage of observations in
the oceans and over the land surface. At global scale, the uncertainties in
SST (0.01°–0.08°C) and LSAT (0.04°–0.18°C) are much smaller than those at
local grid scale due to error cancellations in the averaging process. The
uncertainties are generally smaller in SST than in LSAT due to smaller SST
variabilities. The GST uncertainty is close to SST uncertainty due to a
large area weight of SST of 0.71. Comparisons show that the GST and its
uncertainty in NOAAGlobalTemp v5 are comparable to those in other
internationally recognized global surface temperature products - the
differences are within their uncertainties at the 95% confidence level. All
of these products indicate that warming near the earth’s surface has
accelerated in recent decades.

Boyin worked with the following:

Matthew J. Menne1, Tim Boyer1, Eric Freeman2, Byron E. Gleason1, Jay H.
Lawrimore1, Chunying Liu2,  J. Jared Rennie3, Russell Vose1, Claude N.
Williams1, Xungang Yin2, Huai-Min Zhang1

1. NOAA National Centers for Environmental Information, 151 Patton Avenue,
Asheville, NC 28801, USA.

2. ERT, Inc., 6100 Frost Place, Laurel, MD 20707, USA.

3. Cooperative Institute for Climate and Satellites, North Carolina State
University, Asheville, North Carolina, USA.


Dr. Boyin Huang joined NOAA/NCEI in January 2011 working on ERSST and
NOAAGlobalTemp. He was an oceanographer in Climate Prediction Center
(2004-2010) worked on climate analysis and global ocean monitoring. He was
a research scientist in the Center for Research on the Changing Earth
System, Columbia, Maryland (2002-2004) worked on the impacts of the
atmospheric freshwater on the oceans. He did the post-doc study in
Massachusetts Institute of Technology (2000-2002) on the oceanic roles in
global warming. He received Ph.D. in physical oceanography in University of
Wisconsin-Madison (2000); M.S. in atmospheric dynamics in Institute of
Atmospheric Physics, Chinese Academy of Science, Beijing (1987); and B.S.
in meteorology in Nanjing University (1984). His current research interests
are in SST and NOAAGlobalTemp reconstructions and the role of SST in
climate change. He was recognized as DOC Outstanding Science and Data
Management Employee of the Year 2017, NOAA The Employee of the Month –
September 2015, awarded NOAA Bronze Medal – 2016 and DOC Gold Medal – 2016.
He published 48 papers (of 30 in the first author) in peer-reviewed


The presentation will be in NCEI-NC CR411, 1-2pm ET/ 11am-12pm MT. For
those unable to attend in person, an online link is provided below. The
next seminar will be March 5th, with ITSD presenting.

*If you missed a previous presentation, just want to revisit a past one, or
want to see the upcoming schedule, go to **NCEI Employees Google Site/
are posted after the seminar. The recorded presentation is available,
usually, within 36 hours.*

If you would like to present on a topic, speak to your Branch Chief and
Katy Matthews *(**katy.matthews at noaa.gov <katy.matthews at noaa.gov>**).*

Now that we are using GoToWebinar, when you join the meeting you are muted.
If you have a question or comment, please chat the monitor or ‘Raise your
Hand’. The webinar is monitored and you will be unmuted at the request of
the presenter, during or at the end of the presentation.

*Please register for NCEI Seminar Series on Mar 26, 2019 1:00 PM EDT
at:  **https://attendee.gotowebinar.com/register/6316188919926453761

* ,after registering you will receive a confirmation email containing
information about joining the webinar. *
You can also add the series to your Google calendar or Outlook calendar.

After registering, select ‘Add to calendar’

This will give you only the option to add to Outlook

To add to Google, download that .ics file

Follow the link to add the GoToMeeting extension to Chrome


Once added,

Open Google Calendar on a computer. ...

In the top right, click Settings > Settings.

Open the Calendars tab.

Click Import calendar between the "My calendars" and "Other Calendars"

Click Choose File and select the .ics file you downloaded.

This adds each seminar link to your calendar and now you just open the link
in the calendar to join the webinar, without re-registering.

You can contact me at:

*fred.burnett at noaa.gov <fred.burnett at noaa.gov>  *828-271-4430

*Fred Burnett *
TeleSolv Consulting
NOAA National Centers for Environmental Information / ITSD
(828) 271-4430 Phone
(704) 773-2656 Cell
(828) 257-3138 Fax

The National Climate Assessment
Regional Climate Trends and Scenarios


*Ge Peng, PhD*
*Research Scholar*
Cooperative Institute for Climate and Satellites - NC (CICS-NC)/NCSU at

NOAA’s National Centers for Environmental Information (NCEI)

Center for Weather and Climate (CWC)

151 Patton Ave, Asheville, NC 28801
+1 828 257 3009; ge.peng at noaa.gov

ORCID: http://orcid.org/0000-0002-1986-9115

Following CICS-NC on Facebook <http://www.facebook.com/cicsnc>
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