Impact model: GLM

The General Lake Model (GLM) is a one dimensional
open-source code designed to simulate the hydrodynamics
of lakes, reservoirs, and wetlands. It includes sub-models that simulate surface heat exchange and ice cover dynamics, vertical mixing, and inflow–outflow dynamics.

ISIMIP2b

Confirm data for simulation round ISIMIP2b

Person responsible for model simulations in this simulation round

Klaus Joehnk: Klaus.Joehnk@csiro.au, CSIRO (Australia)

Robert Ladwig: ladwigjena@gmail.com, Center for Limnology, University of Wisconsin-Madison (USA)

Additional persons involved: Tadhg Moore

Output Data

Experiments: I, II, III, VIII
Climate Drivers: None
Date: 2019-11-12

Basic information

Model Version: GLM v3

Simulation Round Specific Description: * Data in embargo period, not yet publicly available. Simulating 60 well studied lakes.

Reference Paper: Main Reference: Hipsey M, Bruce L, Boon C, Busch B, Carey C, Hamilton D, Hanson P, Read J, de Sousa E, Weber M, Winslow L et al. A General Lake Model (GLM 3.0) for linking with high-frequency sensor data from the Global Lake Ecological Observatory Network (GLEON). Geoscientific Model Development,12,473-523,2019

Resolution

Spatial aggregation: lake

Horizontal resolution: 0.5°x0.5°

Temporal resolution of input data: climate variables: daily

Input data

Simulated atmospheric climate data sets used: IPSL-CM5A-LR, HadGEM2-ES, GFDL-ESM2M, MIROC5

Observed atmospheric climate data sets used: EWEMBI

Climate variables: sfcWind, tas, rlds, rhs, rsds, prsn, pr

Spin-up

Was a spin-up performed?: Yes

Spin-up design: Three years of data were appended to the beginning of the meteorological forcing data and used to spin up the model.

Extreme Events & Disturbances

Key challenges: Extreme events tend to occur on a temporal scale shorter than one day so using forcing data at a daily timestep makes it difficult to capture such events.

Calibration

Was the model calibrated?: Yes

Which years were used for calibration?: 1979-2016

Which dataset was used for calibration?: EWEMBI

How many catchments were callibrated?: 60 lakes