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GLEON Physics/Climate Update Jordan Read, Kohji Muraoka, David Hamilton, Evelyn Gaiser, Ian Jones etc.

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Presentation on theme: "GLEON Physics/Climate Update Jordan Read, Kohji Muraoka, David Hamilton, Evelyn Gaiser, Ian Jones etc."— Presentation transcript:

1 GLEON Physics/Climate Update Jordan Read, Kohji Muraoka, David Hamilton, Evelyn Gaiser, Ian Jones etc

2 Plan Collect water temperature (full depth) and wind data (preferably hourly) Automate calculation of stability parameters (Schmidt Stability, Wedderburn Number, Lake Number) – a number of steps required in this Analyse for a plethora of questions on stability and episodic events (detection and severity, controls, frequency, timescales….)

3 Data set 15 lakes Other lakes available Denmark, Germany, Ireland, New Zealand, United Kingdom, US of A 0.09 – 600 km 2 5 – 253 m depth Different dates from 05 – 09 (approx 1 yr)

4 Date Timetemp0Temp1.0temp2.0temp3.5temp5.0Temp7.0Temp9.0temp11.0 7/5/ : /5/ : /5/ : /5/ : /5/ : /5/ : /5/ : /6/2007 1: /6/2007 2: °C Temp2Density (Hours assumed to be void of surface heat) NightTimeHours = [ ] splineFit findThermoCl Max d /dz

5 Thermocline depth (m) time findOutliers NightTimeHours Thermocline depth (m) Replace with running ave Full thermocline time series if d /dz < slopeCriteria break Themocline estimate metaTopSearch metaBotSearch

6 Metalimnion depth (m) time findOutliers Metalimnion depth (m) Replace with running ave Metalimnion depth (m) Calc 6hr running ave

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14 Lake Taupo

15 Lake Annie

16 Lake Castle


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