GLEONLake Ecosystem Modelling working group

Developers group

Users group

Common GLEON model dataset(s)(ensemble modelling)

Other GLEON working groups

Modelling network

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New users training

COMMON DATASET (initial take-off):

Sparkling Lake (Wisconsin)Area (ha) : 64Mean depth (m) : 11Max depth (m) : 20

Time line for the next year

Introduction to new model framework

GLEON 11Nanjing, ChinaOct 2010

Questionnaire

Generation of common model dataset(s)

GLEON13GLEON12

Take-offDevelopers and users Workshops

Core-group (and network) model development

Ecosystem modeling working group (EMWG) G11Co-Moderators: Dennis Trolle and Jim Rusak

Tuesday 19 Oct 9amIntroductions all around about who is in the room and what they’re interested in. About half “core” people, ¼ “users”, and ¼ new to modeling.Dennis gave overview of EMWG work from G11 and workshop convened in Denmark. David Hamilton has 1D hydrodynamic code he’s willing to go over at the meeting if people are welcome. An open-source hydrodynamic biogeochemical model is being developed by Matt Hipsey. He connected by Skype to let us know about his progress; he thinks linked physical-biochemical model may be ready in ~ 1 year (and first prototype up’n running before the end of 2010).

The Denmark workshop participants had an idea to get a standard dataset of several lakes that could be used to compare models across several lakes. Ideal datasets would include long-term datasets and perhaps high frequency observation data. Datasets mentioned that are comparable include NTL LTER lakes, a few Denmark lakes, and perhaps some Ontario lakes. Data requirements for DYRESM-CAEDYM were reviewed by Dennis for the group; he has a document online that is very specific, set up for people who might just want to hand over the data to a modeler.We discussed about the use of ELCOM- and DYRESM-CAEDYM connected to a catchment model (SWAT) for different lake types and watershed types.

Wednesday 20 October 2010Breakout Groups•List of participants

1.Dennis Trolle2.Jackie Qin3.David Johnson4.Chi Shiyun5.Chen Yan Zang6.Yiping Li7.Lei Hua8.Wenbin Hao9.Edina Balogh10.Emily Kara

11.Mingming Zhu12.Fenjuan Hu13.Jane Li14.Jim Rusak15.Yu Li16.Dirk Sarpe17.Mark Honti18.Liancong Lua19.Lauri Arvola

•Scientific questions1. How do different models perform/compare on a single lake dataset?2. Organizational/networking processes. How do users, developers, new

users best interact? (with Grace Hong)3. Can models predict (relatively) large changes in ecosystem behavior

represented by a single, common, long-term dataset? •Process with action items

1. Online survey to gage interest of wider GLEON community in modeling, training, users, developers

2. Compile common dataset – Sparkling Lake, WI, USA•Calendar

1. Online survey before G122. Get dataset together before G123. Introduction to new modelling framework (by Matt Hipsey) at G124. Modeling new-user training workshop at G12 or G13?

•Products1. Common long-term Sparkling Lake dataset online available for research

use, training, and test case2. Modeling website as resource- updates3. Results of survey informing what GLEON members want from the

Modeling Working Group