GLEON 10: Fluorescence signal processing timeline

photohomoeopathΤεχνίτη Νοημοσύνη και Ρομποτική

24 Νοε 2013 (πριν από 3 χρόνια και 24 μέρες)

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Signal Processing

Mission statement




Developing approaches to detect change
and characteristic frequencies in GLEON
monitoring data at differing regional and
limnological scales

Overarching question


Is it possible to detect changes in physical data
that lead to shifts in ecosystem state?



Physical data: readily available



Ecosystem state: not easily measured

Chlorophyll fluorescence is one possible

measure.



Hierarchy of research questions



How do the scales of variability in chlorophyll
fluorescence differ across lakes and are they related
to variations in physical parameters?



Can we detect shifts in ecosystem state using
chlorophyll fluorescence?



Can variations in chlorophyll fluorescence be related
to other measures of phytoplankton growth?





Gleon 10

May 2010

Gleon 11

Oct 2010

Gleon 10

May 2011

Data collation

QA/QC

Wavelet analysis workshop

Data exploration

GLEON 10: Fluorescence signal processing timeline

BRAZIL

Gleon 10

May 2010

Gleon 11

Oct 2010

Gleon 12

May 2011

Data collation

QA/QC

Wavelet analysis workshop

Data exploration

GLEON 10: Fluorescence signal processing timeline

Liz Ryder received
metadata on 22
sites and collated
data from eight

Gleon 10

May 2010

Gleon 11

Oct 2010

Gleon 12

Apr 2011

Data collation

QA/QC

Wavelet analysis workshop

Data exploration

GLEON 10: Fluorescence signal processing timeline

Data on
Druple

site

QA/QC

Data from Blelham Tarn UK and Tutira NK

Goals for this meeting


Review data


Refining questions


Identifying process


how do we answer Qs


Initial wavelet analysis


Consider additional approaches


Plan for next 6 months


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Precipitation (mm h
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Wind
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s
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Cloud
Wind
Cloud cover (oktas)
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BV (N, s
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1
)
Thermocline depth(m)
Depth
BV
f
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Precipitation (mm day
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)
PPT
Wind
d
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BV (N, s
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Thermocline depth (m)
Depth
BV
g
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BV (N, s
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Thermocline depth (m)
Depth
BV
h
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Dissolved oxyegn (%)
k
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1.0
1.5
2.0
2.5
3.0
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120
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Cumulative daily DOC load (t km
2
)
Dissolved oxygen (%)
DO
DOC
l
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25
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Mean daily wind speed (m s
-
1
)
Air temperature (
o
C)
T air
Wind
a
0.00
0.02
0.04
0.06
0.08
0.10
0.12
0.14
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07/10
BV (N, s
-
1
)
Thermocline depth (m)
Depth
BV
e
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Chl a (mg m
-
3
)
Dissolved oxygen (%)
DO
chl a
i
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26/07
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chl a
DO 0.5m
DO 60m
DO 30m
Dissolved oxyegn (%)
Chl a (mg m
-
3
)
j
Manuscript currently under revision for re
-
submission to Freshwater Biology



Episodic events in lakes: drivers and responses


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Mean hourly wind speed (m s
-
1
)
Precipitation (mm h
-
1
)
PPT
Wind
c
0
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12
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06/06
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26/06
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16/07
26/07
05/08
15/08
25/08
04/09
14/09
Mean daily wind speed (m
s
-
1
)
Cloud
Wind
Cloud cover (oktas)
b
0.00
0.02
0.04
0.06
0.08
0.10
5
10
15
20
25
30
27/05
06/06
16/06
26/06
06/07
16/07
26/07
05/08
15/08
25/08
04/09
14/09
BV (N, s
-
1
)
Thermocline depth(m)
Depth
BV
f
0
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6
8
10
12
0
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30
40
50
01/06
11/06
21/06
01/07
11/07
21/07
31/07
10/08
20/08
30/08
Mean daily wind speed (m s
-
1
)
Precipitation (mm day
-
1
)
PPT
Wind
d
0.10
0.12
0.14
0.16
0.18
6
7
8
9
10
11
12
17/08
18/08
19/08
20/08
21/08
22/08
23/08
24/08
25/08
26/08
27/08
BV (N, s
-
1
)
Thermocline depth (m)
Depth
BV
g
0.05
0.06
0.07
0.08
0.09
0.10
5
7
9
11
13
15
17
19
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23
25
01/06
10/06
19/06
28/06
07/07
16/07
25/07
03/08
12/08
21/08
30/08
BV (N, s
-
1
)
Thermocline depth (m)
Depth
BV
h
0
20
40
60
80
100
120
17/08
18/08
19/08
20/08
21/08
22/08
23/08
24/08
25/08
26/08
27/08
Dissolved oxyegn (%)
k
0.0
0.5
1.0
1.5
2.0
2.5
3.0
0
20
40
60
80
100
120
01/06
11/06
21/06
01/07
11/07
21/07
31/07
10/08
20/08
30/08
Cumulative daily DOC load (t km
2
)
Dissolved oxygen (%)
DO
DOC
l
0
2
4
6
8
10
12
0
5
10
15
20
25
18/08
28/08
07/09
17/09
27/09
07/10
Mean daily wind speed (m s
-
1
)
Air temperature (
o
C)
T air
Wind
a
0.00
0.02
0.04
0.06
0.08
0.10
0.12
0.14
4
5
6
7
8
18/08
28/08
07/09
17/09
27/09
07/10
BV (N, s
-
1
)
Thermocline depth (m)
Depth
BV
e
0
20
40
60
80
100
120
140
160
180
200
0
20
40
60
80
100
120
140
160
18/08
28/08
07/09
17/09
27/09
07/10
Chl a (mg m
-
3
)
Dissolved oxygen (%)
DO
chl a
i
0
20
40
60
80
100
120
140
160
180
200
0
20
40
60
80
100
120
140
160
27/05
06/06
16/06
26/06
06/07
16/07
26/07
05/08
15/08
25/08
04/09
14/09
chl a
DO 0.5m
DO 60m
DO 30m
Dissolved oxyegn (%)
Chl a (mg m
-
3
)
j
Manuscript currently under revision for re
-
submission to Freshwater Biology



Eleanor Jennings, Stuart Jones, Lauri Arvola, Peter A. Staehr, Evelyn
Gaiser, Ian D. Jones, Kathleen C. Weathers, Gesa A. Weyhenmeyer, Chih
-
Yu Chiu