Impact model: air2water4par

air2water4par is a hybrid physically-based/statistical model to predict Lake Surface Water Temperature (LSWT) and epilimnion thickness relying solely on air temperature as external forcing.

Lakes (local)
Contact Person

Information for the model air2water4par is provided for the simulation rounds shown in the tabs below. Click on the appropriate tab to get the information for the simulation round you are interested in.

Basic information
Model Version: 2.0.0
Model output license: CC BY 4.0
Simulation Round Specific Description: ISIMIP2b simulation round
Reference Paper: Main Reference: Piccolroaz S, Toffolon M, Majone B et al. A simple lumped model to convert air temperature into surface water temperature in lakes. Hydrology and Earth System Sciences,17,3323–3338,2013
Reference Paper: Other References:
Person Responsible For Model Simulations In This Simulation Round: Bronwyn Woodward; Sebastiano Piccolroaz
Output Data
Experiments: I, II, III, VIII
Climate Drivers: IPSL-CM5A-LR, HadGEM2-ES, GFDL-ESM2M, MIROC5
Date: 2020-04-01
Spatial Aggregation: lake
Temporal Resolution Of Input Data: Climate Variables: daily
Additional Temporal Resolution Information: The model needs daily air temperature data, which can be provided by daily observed/modeled values or reconstructed through daily interpolation of coarser resolution averages (e.g., weekly, monthly)
Input data sets used
Simulated Atmospheric Climate Data Sets Used: IPSL-CM5A-LR, HadGEM2-ES, GFDL-ESM2M, MIROC5
Observed Atmospheric Climate Data Sets Used: EWEMBI
Climate Variables: tas
Was A Spin-Up Performed?: Yes
Spin-Up Design: The first year of each simulation period was run starting from LSWT at 4°C, and the LSWT at the end of this period was used to initialize the simulation runs.
Technological Progress
Technological Progress: No
Soil Layers: none
Was The Model Calibrated?: True
Which Years Were Used For Calibration?: Dependent on experiment period and period covered by water temperature observations
Which Dataset Was Used For Calibration?: Dependent on experiment period