Summary for 5/6 May vtc
Present:
TFRI: Hen-biau King,
Chau-Chin Lin, Charles
NCHC: Fang-Pang Lin,
Hsui-mei Chou, Julian Chen, Grace Hong
NTL and Madison: Tim Kratz, Tim
Meinke, Paul Hanson, Dave Balsiger, Matthew Van de Bogert (Phone)
UCSD: Longjiang Ding,
Tony Fountain, Peter Arzberger
Next
Meetings:
Science Sub-group:
20 May: 8 am Taipei
19 May: 7 pm
Wisconsin
Topics:
Entire Group:
3 June: 8 am Taipei
and Hsinchu
3 June: 1 am Edinburgh :-)
2 June: 5 pm San Diego, 7 pm Wisconsin
Topics:
Action:
· Tim Kratz and Matthew Van de Bogert: Draft agenda for first few days in Taiwan (early July visit)
· Julian and others: Explore feasibility of adding lake level sensor (and archival data) to data about lake. This was motivated by researcher I-Lan Lai
o Issues of solar panel and database addition
· Julian: Add information on level of battery charge
· Tim Kratz: Longer-term issue: When visiting in July, look at feasibility of adding barametric pressure sensors to buoy or meteorological station.
· Hen-biau King: Hold off typhoon for at least 2 more weeks – to get a fuller set of reading of lake in “metastable” case J
· LJ and Paul Hanson (?): Look at how to add metabolism computation as web service:
· Peter: Include NCHC in architecture dialog.
· Hen-Biau King and/or Chin Lin: Determine whom from TFRI to be in the loop on architecture sub committee.
· Hen-biau King: Send name of contact in Australia (Done: Rodney.Keenan@brs.gov.au)
Discussion:
There are users of
meteorological data. Communications ok
Tim:
Downloaded all data
from buoy. Oxygen concentration increases at night and increases during
day. This could be due to water
temperature changes affecting solubility of O2. Therefore, oxygen fluxes from air to water during night when lake
cools (increasing oxygen solubility) and fluxes from water to air during day when
lake surface water warms. Some of this
pattern could also be caused by photo-oxidation of dissolved organic matter
during the day. This process consumes
oxygen. When we computed percent of
oxygen saturation (function of O2 concentration, temperature, and barometric
pressure), we saw increase in saturation during day and decrease at night. This pattern suggests that we will be able
to calculate meaningful metabolism numbers, but we need to do some work on
sensitivity analyses of the model used to calculate metabolism. We may need to have good, high frequency
data on barometric pressure at YYL. For
now, we just used a standard correction for elevation of YYL. At this point we are excited that YYL is
behaving differently from other lakes we have studied. This means we will likely learn something
new.
***Problem with
temperature data: sometimes ends up in wrong columns in database. Need to do
QA/QC
***Information
Flow: Need to complete atmospheric flux – need to develop web services.
Want good data on
barametric – to get saturation on lake
Want to
characterize biological and chemical aspects: for comparison with NTL, and
compatible with other YYL studies. Will be easier with Matt on the ground.
Paul:
Effects of
atmosphere on DOC more important than in Wisconsin
A couple more
weeks, will have enough data to run through model.
Tim:
If photo-oxidation
is important, then have material coming to lake in dark, and doing something
when hits lake.
Interesting linkage
between terrestrial and aquatic
Paul:
Lakes are mixed
reactors. Can look at rates of decay in soils and in lakes (opportunity for
coupling between terrestrial and aquatic systems).
Hen-biau:
Waiting for
typhoon, to change ph and materials in lake.
Julian: Make system
more stable. We don’t know how much battery is left.
Note: Battery on
buoy is stable.
See table like http://sensor.nchc.org.tw/YYL/pc208w.html (This site will be linked to the main
lakemetabolism.org web page. Is this ok
Julian?)
Update by Peter
-
Science
-
Architecture
Have had one
session locally (motivated by NSF proposal). Will include NCHC people in e-mail
communications.
Who at TFRI is to
be involved (per notes of previous meetings)?
Come early July
Spend part time in
Taipei, part time in Fushan/YYL
Matt and Tim: Put
together agenda for the first 2 weeks (it may take several weeks to produce
agenda)
Summary of NZ/AU
discussion: (David Hamilton of U Waikato, Jason Antenucci and Anas Ghaduoani or Center for Water Resources,
Western Australia)
People liked the
idea, but we are at the beginning of this effort – and will seek funding to
start collaborations and visits.
New set of
analytical skills would be brought by these groups.
In general, not
much contact on networking / grid with New Zealand. Fang-Pang has contact at HPC
Center in New Zealand (strong background HP Computing).
Australia LTER
Network Representative (Interaction of atmosphere, land, lake). Hen-biau sent
name subsequent to meeting: Rodney.Keenan@brs.gov.au.
Bioscience: Tim
Kratz, Paul Hanson, Fang-Pang Lin, Hen-biau King: Please send comments to John
Porter by 7 May (US).
Limnology: After
Matt is there – could get international journal; with Typhon, could get
Science/Nature paper.
19 May / 20 May:
Science Group
Entire group
2 June / 3 June
I-Lan Lai (She –
not related to Alan Lai): have water level (National Taiwan University)
Get archival data
Have water level
sensor as part of ecogrid
Expert in
meteorology of YYL. – will have intensive study
Experts on Dong Hwa
University
Julian: With
location of lake level, solar panel would not work (no sun).
Might be able
locate solar panel short distance away.
Web site of down
loading: http://sensor.nchc.org.tw/YYL/pc208w.html