test result of three flux stations to be installed in ... · test result of three flux stations to...
TRANSCRIPT
Test result of three flux stations to be installed in Egypt
results prepared by Tsuchihira, K. (Univ. Tsukuba)
MethodMethodTest period
•2010/3/1 14:00 ‐ 2010/3/10 14:00 (with several rainfall events)Site
•Terrestrial Environment Research Center (TERC) Observation field (N 36O06’35” E 140O06’00”) of University of•Terrestrial Environment Research Center (TERC) Observation field (N 36O06 35 , E 140O06 00 ) of University of Tsukuba (see for details at http://www.suiri.tsukuba.ac.jp/tercgaiyo/shisetsu/hojyo/)
Flux Stations•Three flux stations are called No1, No2, and No3 respectively.
Measured height : Sonic anemometer CO /H O analyzer Temperature and Humidity Probe→ About 2mMeasured height : Sonic anemometer, CO2/H2O analyzer, Temperature and Humidity Probe → About 2m•The outputs were compared with each other, and with data from TERC
TERC data•Data : Routine Observation by of the University of Tsukuba•Equipment :•Equipment :
•Sonic anemometer (measured height : 1.6m), Ventilated thermometer with radiation shield (measured height : 1.6m), Dew‐point thermometer (measured height : 1.6m),Soil heat flow plate, Pyranometer, and Net radiometer
Data ProcessingData Processing•no selection was made•all 30‐min average data (as obtained from data logger) were plotted against time, and compared with those by TERC routine observations (when same component is available), or with each other among three stations (when TERC data are not available)(when TERC data are not available)
1 met and flux data1. met and flux data
2.5
3
3.5
4
4.5
Pre
cip（
m/s)
precipitation measurements (No.1) TERC
2.5
3
3.5
4
4.5
Pre
ci（
m/s)
precipitation measurements (No.2) TERC
1
1.5
2
1
1.5
2
2.5
3
pitation (m
m/30mta
l w
ind
speed
1
1.5
2
1.5
2
2.5
3
pitation (m
m/30al
win
d s
peed （
0
0.5
0
0.5
1
12:0
0
12:0
0
12:0
0
12:0
0
12:0
0
12:0
0
12:0
0
12:0
0
12:0
0
12:0
0
min
)
Horizo
nt
0
0.5
0
0.5
1
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
0m
in)
Horizo
nta
2010/3/1
2010/3/2
2010/3/3
2010/3/4
2010/3/5
2010/3/6
2010/3/7
2010/3/8
2010/3/9
2010/3/10
2010/3/1 1
2
2010/3/2 1
2
2010/3/3 1
2
2010/3/4 1
2
2010/3/5 1
2
2010/3/6 1
2
2010/3/7 1
2
2010/3/8 1
2
2010/3/9 1
2
2010/3/10 1
2
Wind Speed2.5
3
3.5
4
4.5
Pre
cip（
m/s)
precipitation measurements (No.3) TERC
1
1.5
2
1.5
2
2.5
3
pitation (m
m/30
tal w
ind
speed
（
0
0.5
0
0.5
1
12:0
0
12:0
0
12:0
0
12:0
0
12:0
0
12:0
0
12:0
0
12:0
0
12:0
0
12:0
0
0m
in)
Horizo
nt
2010/3/1 1
2010/3/2 1
2010/3/3 1
2010/3/4 1
2010/3/5 1
2010/3/6 1
2010/3/7 1
2010/3/8 1
2010/3/9 1
2010/3/10 1
1020
1025
1030
Pa)
measurements (No.1) TERC
1020
1025
1030
Pa)
measurements (No.2) TERC
1000
1005
1010
1015
Air p
ress
ure
(hP
1000
1005
1010
1015
Air p
ress
ure
(hP
990
995
1000
12:0
0
12:0
0
12:0
0
12:0
0
12:0
0
12:0
0
12:0
0
12:0
0
12:0
0
12:0
0
A
990
995
1000
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
A
2010/3/1 1
2010/3/2 1
2010/3/3 1
2010/3/4 1
2010/3/5 1
2010/3/6 1
2010/3/7 1
2010/3/8 1
2010/3/9 1
2010/3/10 1
2010/3/1 1
2
2010/3/2 1
2
2010/3/3 1
2
2010/3/4 1
2
2010/3/5 1
2
2010/3/6 1
2
2010/3/7 1
2
2010/3/8 1
2
2010/3/9 1
2
2010/3/10 1
2
Air Pressure
1020
1025
1030
a)
measurements (No.3) TERC
1000
1005
1010
1015
1020
r pr
ess
ure
(hP
a
990
995
1000
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
Ai r
2010/3/1 1
2010/3/2 1
2010/3/3 1
2010/3/4 1
2010/3/5 1
2010/3/6 1
2010/3/7 1
2010/3/8 1
2010/3/9 1
2010/3/10 1
25
Temperature and Humidity Probe 1
measurements (No.1) TERC
25
Temperature and Humidity Probe 2
measurements (No.1) TERC
10
15
20
pera
ture
（℃
）
10
15
20
pera
ture
（℃
）
0
5
12:0
0
12:0
0
12:0
0
12:0
0
12:0
0
12:0
0
12:0
0
12:0
0
12:0
0
12:0
0
Air t
em
p
0
5
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
Air t
em
2010/3/1
2010/3/2
2010/3/3
2010/3/4
2010/3/5
2010/3/6
2010/3/7
2010/3/8
2010/3/9
2010/3/1
0
2010/3/1
1
2010/3/2
1
2010/3/3
1
2010/3/4
1
2010/3/5
1
2010/3/6
1
2010/3/7
1
2010/3/8
1
2010/3/9
1
2010/3/1
0 1
Air Temperature25
Temperature and Humidity Probe 3
measurements (No.1) TERC
10
15
20
pera
ture
（℃
）
0
5
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
Air t
em
p
2010/3/1
12
2010/3/2
12
2010/3/3
12
2010/3/4
12
2010/3/5
12
2010/3/6
12
2010/3/7
12
2010/3/8
12
2010/3/9
12
2010/3/10
12
25
Temperature and Humidity Probe 1
measurements (No.2) TERC
25
Temperature and Humidity Probe 2
measurements (No.2) TERC
10
15
20
era
ture
（℃
）
10
15
20
pera
ture
（℃
）
0
5
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
Air t
em
p
0
5
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
Air t
em
p
2010/3/1
1
2010/3/2
1
2010/3/3
1
2010/3/4
1
2010/3/5
1
2010/3/6
1
2010/3/7
1
2010/3/8
1
2010/3/9
1
2010/3/1
0 1
2010/3/1
12
2010/3/2
12
2010/3/3
12
2010/3/4
12
2010/3/5
12
2010/3/6
12
2010/3/7
12
2010/3/8
12
2010/3/9
12
2010/3/1
0 1
2
Air Temperature25
Temperature and Humidity Probe 3
measurements (No.2) TERC
10
15
20
era
ture
（℃
）
0
5
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
Air t
em
p
2010/3/1
12
2010/3/2
12
2010/3/3
12
2010/3/4
12
2010/3/5
12
2010/3/6
12
2010/3/7
12
2010/3/8
12
2010/3/9
12
2010/3/10
12
25
Temperature and Humidity Probe 1
measurements (No.3) TERC
25
Temperature and Humidity Probe 2
measurements (No.3) TERC
10
15
20
era
ture
（℃
）
10
15
20
pera
ture
（℃
）
0
5
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
Air t
em
p
0
5
10
00
00
00
00
00
00
00
00
00
00
Air t
em
p
2010/3/1
1
2010/3/2
1
2010/3/3
1
2010/3/4
1
2010/3/5
1
2010/3/6
1
2010/3/7
1
2010/3/8
1
2010/3/9
1
2010/3/1
0 1
2010/3/1
12:
2010/3/2
12:
2010/3/3
12:
2010/3/4
12:
2010/3/5
12:
2010/3/6
12:
2010/3/7
12:
2010/3/8
12:
2010/3/9
12:
2010/3/1
0 1
2:
Air Temperature25
Temperature and Humidity Probe 3
measurements (No.3) TERC
10
15
20
era
ture
（℃
）
0
5
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
Air t
em
p
2010/3/1
12
2010/3/2
12
2010/3/3
12
2010/3/4
12
2010/3/5
12
2010/3/6
12
2010/3/7
12
2010/3/8
12
2010/3/9
12
2010/3/10
12
100
120）
Temperature and Humidity Probe 1
measurements (No.1) TERC
100
120
Temperature and Humidity Probe 2
measurements (No.1) TERC
20
40
60
80
ve h
um
idty
（％
）
20
40
60
80
ve h
um
idty
（％
）
-20
0
3/1
12:0
0
3/2
12:0
0
3/3
12:0
0
3/4
12:0
0
3/5
12:0
0
3/6
12:0
0
3/7
12:0
0
3/8
12:0
0
3/9
12:0
0
/10 1
2:0
0
Rela
tiv
-20
0
/1
12:0
0
/2
12:0
0
/3
12:0
0
/4
12:0
0
/5
12:0
0
/6
12:0
0
/7
12:0
0
/8
12:0
0
/9
12:0
0
10 1
2:0
0
Rela
tiv
2010/3
2010/3
2010/3
2010/3
2010/3
2010/3
2010/3
2010/3
2010/3
2010/3/
2010/3/
2010/3/
2010/3/
2010/3/
2010/3/
2010/3/
2010/3/
2010/3/
2010/3/
2010/3/1
Relative Humidity120
Temperature and Humidity Probe 3
measurements (No.1) TERC
40
60
80
100
e h
um
idty
（％
）
-20
0
20
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
Rela
tive
2010/3/1
12
2010/3/2
12
2010/3/3
12
2010/3/4
12
2010/3/5
12
2010/3/6
12
2010/3/7
12
2010/3/8
12
2010/3/9
12
2010/3/10
12
120
Temperature and Humidity Probe 1
measurements (No.2) TERC
120
Temperature and Humidity Probe 2
measurements (No.2) TERC
40
60
80
100
e h
um
idty
（％
）
60
80
100
hum
idty
（％
）
0
20
40
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
Rela
tiv e
0
20
40
00
00
00
00
00
00
00
00
00 00
Rela
tive
2010/3/1
12
2010/3/2
12
2010/3/3
12
2010/3/4
12
2010/3/5
12
2010/3/6
12
2010/3/7
12
2010/3/8
12
2010/3/9
12
2010/3/1
0 1
2
2010/3/1
12:0
2010/3/2
12:0
2010/3/3
12:0
2010/3/4
12:0
2010/3/5
12:0
2010/3/6
12:0
2010/3/7
12:0
2010/3/8
12:0
2010/3/9
12:0
2010/3/10
12:0
Relative Humidity120
Temperature and Humidity Probe 3
measurements (No.2) TERC
40
60
80
100
e h
um
idty
（％
）
0
20
40
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
Rela
tive
2010/3/1
12
2010/3/2
12
2010/3/3
12
2010/3/4
12
2010/3/5
12
2010/3/6
12
2010/3/7
12
2010/3/8
12
2010/3/9
12
2010/3/10
12
120
Temperature and Humidity Probe 1
measurements (No.3) TERC
120
Temperature and Humidity Probe 2
measurements (No.3) TERC
40
60
80
100
e h
um
idty
（％
）
40
60
80
100
e h
um
idty
（％
）
0
20
40
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
Rela
tive
0
20
40
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
3/10
…
Rela
tive
2010/3/1
1
2010/3/2
1
2010/3/3
1
2010/3/4
1
2010/3/5
1
2010/3/6
1
2010/3/7
1
2010/3/8
1
2010/3/9
1
2010/3/1
0 1
2010/3/1
1
2010/3/2
1
2010/3/3
1
2010/3/4
1
2010/3/5
1
2010/3/6
1
2010/3/7
1
2010/3/8
1
2010/3/9
1
2010/3
Relative Humidity120
Temperature and Humidity Probe 3
measurements (No.3) TERC
40
60
80
100
e h
um
idty
（％
）
0
20
40
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
Rela
tiv e
2010/3/1
12
2010/3/2
12
2010/3/3
12
2010/3/4
12
2010/3/5
12
2010/3/6
12
2010/3/7
12
2010/3/8
12
2010/3/9
12
2010/3/10
12
2.5
3
20
25
30
Pre
c
㎥)
precipitation measurements from H2O analyzer (No.1) TERC
2.5
3
20
25
30
Pre
c
㎥)
precipitation measurements from H2O analyzer (No.2) TERC
1
1.5
2
5
10
15
20 cipitatio
n (m
m/3O
densi
ty (
g/㎥
1
1.5
2
5
10
15
20 cipitatio
n (m
m/3O
densi
ty (
g/㎥
0
0.5
-5
0
12:0
0
12:0
0
12:0
0
12:0
0
12:0
0
12:0
0
12:0
0
12:0
0
12:0
0
12:0
0
30m
in)
H2O
0
0.5
-5
0
5
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
30m
in)
H2O
2010/3/1 1
2010/3/2 1
2010/3/3 1
2010/3/4 1
2010/3/5 1
2010/3/6 1
2010/3/7 1
2010/3/8 1
2010/3/9 1
2010/3/10 1
2010/3/1 1
2
2010/3/2 1
2
2010/3/3 1
2
2010/3/4 1
2
2010/3/5 1
2
2010/3/6 1
2
2010/3/7 1
2
2010/3/8 1
2
2010/3/9 1
2
2010/3/10 1
2
Absolute Humidity
2
2.5
3
20
25
30
Pre
ci㎥
)
precipitation measurements from H2O analyzer (No.3) TERC
1
1.5
2
5
10
15
ipitation (m
m/30
2O
densi
ty (
g/㎥
0
0.5
-5
0
12:0
0
12:0
0
12:0
0
12:0
0
12:0
0
12:0
0
12:0
0
12:0
0
12:0
0
12:0
0
0m
in)
H2
2010/3/1 1
2010/3/2 1
2010/3/3 1
2010/3/4 1
2010/3/5 1
2010/3/6 1
2010/3/7 1
2010/3/8 1
2010/3/9 1
2010/3/10 1
2.5
3
0.4
0.5
0.6
Pre
cip/
s)
precipitation No.1 No.2 No.3
2
2.5
3
1
20
25
Pre
cip
(℃)
precipitation No.1 No.2 No.3
1
1.5
2
0
0.1
0.2
0.3
pitation (m
m/30 w
ind
speed
（m
/
1
1.5
2
5
10
15
pitation (m
m/30
ic t
em
pera
ture
(
0
0.5
-0.2
-0.1
0
12:0
0
12:0
0
12:0
0
12:0
0
12:0
0
12:0
0
12:0
0
12:0
0
12:0
0
12:0
0
0m
in)
vert
ical
0
0.5
-5
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
min
)Soni
2010/3/1
1
2010/3/2
1
2010/3/3
1
2010/3/4
1
2010/3/5
1
2010/3/6
1
2010/3/7
1
2010/3/8
1
2010/3/9
1
2010/3/1
0
2010/3/1
12
2010/3/2
12
2010/3/3
12
2010/3/4
12
2010/3/5
12
2010/3/6
12
2010/3/7
12
2010/3/8
12
2010/3/9
12
2010/3/1
0 1
2
CO concentration
2.5
3
500
550
Pre
c
)
precipitation No.1 No.2 No.3
2.5
3
400
500
Pre
precipitation No.1 No.2 No.3CO2 concentration
1
1.5
2
300
350
400
450
cipitatio
n (m
m/3
O2 d
ensi
ty （
ppm
)
1
1.5
2
100
200
300
cipitatio
n (m
m/
eat
flu
x （W
/m
2)
0
0.5
200
250
300
:00
:00
:00
:00
:00
:00
:00
:00
:00
:00
30m
in)
CO
0
0.5
1
-200
-100
0
00
00
00
00
00
00
00
00
00
00
30m
in)
Lat
ent
he
2010/3/1
12:
2010/3/2
12:
2010/3/3
12:
2010/3/4
12:
2010/3/5
12:
2010/3/6
12:
2010/3/7
12:
2010/3/8
12:
2010/3/9
12:
2010/3/1
0 1
2:
2010/3/1
12:
2010/3/2
12:
2010/3/3
12:
2010/3/4
12:
2010/3/5
12:
2010/3/6
12:
2010/3/7
12:
2010/3/8
12:
2010/3/9
12:
2010/3/1
0 1
2:
600
700
800
900
W/㎡
)
measurements (No.1) TERC
600
700
800
900
W/㎡
)
measurements (No.2) TERC
200
300
400
500
600
wav
e r
adia
tion (W
200
300
400
500
600
wav
e r
adia
tion (W
0
100
200
12:0
0
2 12:0
0
3 12:0
0
4 12:0
0
5 12:0
0
6 12:0
0
7 12:0
0
8 12:0
0
9 12:0
0
0 1
2:0
0
Dow
nw
ard
short
w
0
100
200
12:0
0
2 12:0
0
3 12:0
0
4 12:0
0
5 12:0
0
6 12:0
0
7 12:0
0
8 12:0
0
9 12:0
0
0 1
2:0
0
Dow
nw
ard
short
w
2010/3/1
2010/3/2
2010/3/3
2010/3/4
2010/3/5
2010/3/6
2010/3/7
2010/3/8
2010/3/9
2010/3/10D
2010/3/1
2010/3/2
2010/3/3
2010/3/4
2010/3/5
2010/3/6
2010/3/7
2010/3/8
2010/3/9
2010/3/10D
Solar Radiation700
800
900
/㎡
)
measurements (No.3) TERC
300
400
500
600
700
ve r
adia
tion (W
/
0
100
200
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
wnw
ard
short
wav
2010/3/1
1
2010/3/2
1
2010/3/3
1
2010/3/4
1
2010/3/5
1
2010/3/6
1
2010/3/7
1
2010/3/8
1
2010/3/9
1
2010/3/10
1
Dow
400
500
600
)
measurements (No.1) TERC
400
500
600
)
measurements (No.2) TERC
0
100
200
300
radi
atio
n (
W/㎡
)
0
100
200
300
radi
atio
n (
W/㎡
)
-200
-100
0
12:0
0
12:0
0
12:0
0
12:0
0
12:0
0
12:0
0
12:0
0
12:0
0
12:0
0
12:0
0
Net
r
-200
-100
0
12:0
0
12:0
0
12:0
0
12:0
0
12:0
0
12:0
0
12:0
0
12:0
0
12:0
0
12:0
0
Net
r
2010/3/1
2010/3/2
2010/3/3
2010/3/4
2010/3/5
2010/3/6
2010/3/7
2010/3/8
2010/3/9
2010/3/10
2010/3/1
2010/3/2
2010/3/3
2010/3/4
2010/3/5
2010/3/6
2010/3/7
2010/3/8
2010/3/9
2010/3/10
Net Radiation500
600measurements (No.3) TERC
100
200
300
400
diat
ion (
W/㎡
)
-200
-100
0
:00
:00
:00
:00
:00
:00
:00
:00
:00
:00
Net
rad
2010/3/1
12:
2010/3/2
12:
2010/3/3
12:
2010/3/4
12:
2010/3/5
12:
2010/3/6
12:
2010/3/7
12:
2010/3/8
12:
2010/3/9
12:
2010/3/10
12
120
140
160
/m
2)
No.1 No.2 No.3
350
400
450
/m
2)
No.1 No.2 No.3
40
60
80
100
ave r
adia
tion （
W/
150
200
250
300
ave r
adia
tion （
W/
0
20
40
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
Upw
ard
short
wa
0
50
100
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
ow
nw
ard
longw
a
2010/3/1
12
2010/3/2
12
2010/3/3
12
2010/3/4
12
2010/3/5
12
2010/3/6
12
2010/3/7
12
2010/3/8
12
2010/3/9
12
2010/3/1
0 1
2
2010/3/1
12
2010/3/2
12
2010/3/3
12
2010/3/4
12
2010/3/5
12
2010/3/6
12
2010/3/7
12
2010/3/8
12
2010/3/9
12
2010/3/1
0 1
2D
No 1 No 2 No 3
Upward Long‐wave Radiation350
400
450
500
on （
W/m
2)
No.1 No.2 No.3
150
200
250
300
ongw
ave r
adia
tio
0
50
100
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
Upw
ard
lo
2010/3/1
12
2010/3/2
12
2010/3/3
12
2010/3/4
12
2010/3/5
12
2010/3/6
12
2010/3/7
12
2010/3/8
12
2010/3/9
12
2010/3/1
0 1
2
50607080
㎡）
measurements (No.1) TERC
60
80
100
㎡）
measurements (No.2) TERC
010
20304050
l heat
flu
x （W
/㎡
0
20
40
60
l heat
flu
x （W
/㎡
-30-20-10
0
12:0
0
12:0
0
12:0
0
12:0
0
12:0
0
12:0
0
12:0
0
12:0
0
12:0
0
12:0
0
Soi
-40
-20
12:0
0
12:0
0
12:0
0
12:0
0
12:0
0
12:0
0
12:0
0
12:0
0
12:0
0
12:0
0
Soi
2010/3/1
2010/3/2
2010/3/3
2010/3/4
2010/3/5
2010/3/6
2010/3/7
2010/3/8
2010/3/9
2010/3/10
2010/3/1
2010/3/2
2010/3/3
2010/3/4
2010/3/5
2010/3/6
2010/3/7
2010/3/8
2010/3/9
2010/3/10
Soil Heat Flux100
120
）
measurements (No.3) TERC
20
40
60
80
eat
flu
x （W
/㎡
）
-40
-20
0
:00
:00
:00
:00
:00
:00
:00
:00
:00
:00
Soil
h
2010/3/1
12:
2010/3/2
12:
2010/3/3
12:
2010/3/4
12:
2010/3/5
12:
2010/3/6
12:
2010/3/7
12:
2010/3/8
12:
2010/3/9
12:
2010/3/10
12
2
2.5
3
150
200
250
300
Pre
cipiW
/㎡
)
precipitation measurements (No.1) TERC
2
2.5
3
150
200
250
300
Pre
cipiW
/㎡
)
precipitation measurements (No.2) TERC
1
1.5
2
-50
0
50
100
150
itation (m
m/30m
sibl
e h
eat
flu
x （
1
1.5
2
-50
0
50
100
150
itation (m
m/30m
sibl
e h
eat
flu
x （
0
0.5
-150
-100
50
12:0
0
12:0
0
12:0
0
4 1
2:0
0
12:0
0
12:0
0
12:0
0
12:0
0
12:0
0
0 1
2:0
0
min
)
Sens
0
0.5
-150
-100
50
12:0
0
12:0
0
12:0
0
4 1
2:0
0
12:0
0
12:0
0
12:0
0
12:0
0
12:0
0
0 1
2:0
0
min
)
Sens
2010/3/1
2010/3/2
2010/3/3
2010/3/4
2010/3/5
2010/3/6
2010/3/7
2010/3/8
2010/3/9
2010/3/10
2010/3/1
2010/3/2
2010/3/3
2010/3/4
2010/3/5
2010/3/6
2010/3/7
2010/3/8
2010/3/9
2010/3/10
Sensible Heat Flux2.5
3
200
250
300
Pre
c/㎡
)
precipitation measurements (No.3) TERC
1
1.5
2
0
50
100
150
200 cipitatio
n (m
m/3le
heat
flu
x （W
/
0
0.5
-150
-100
-50
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
2:0
0
30m
in)
Sensi
bl
2010/3/1 1
2010/3/2 1
2010/3/3 1
2010/3/4 1
2010/3/5 1
2010/3/6 1
2010/3/7 1
2010/3/8 1
2010/3/9 1
2010/3/10 1
2.5
3
0.5
0.6
Pre
precipitation measurements (No.1) TERC
2.5
3
0.5
0.6
Pre
precipitation measurements (No.2) TERC
1
1.5
2
0 2
0.3
0.4
cipitatio
n (m
m/ve
locity
（m
/s)
1
1.5
2
0 2
0.3
0.4
cipitatio
n (m
m/ve
locity
（m
/s)
0
0.5
1
0
0.1
0.2
30m
in)
Friction
0
0.5
1
0
0.1
0.2
30m
in)
Friction
2010/3/1
12:0
0
2010/3/2
12:0
0
2010/3/3
12:0
0
2010/3/4
12:0
0
2010/3/5
12:0
0
2010/3/6
12:0
0
2010/3/7
12:0
0
2010/3/8
12:0
0
2010/3/9
12:0
0
2010/3/1
0 1
2:0
0
2010/3/1
12:0
0
2010/3/2
12:0
0
2010/3/3
12:0
0
2010/3/4
12:0
0
2010/3/5
12:0
0
2010/3/6
12:0
0
2010/3/7
12:0
0
2010/3/8
12:0
0
2010/3/9
12:0
0
2010/3/1
0 1
2:0
0
Friction Velocity (momentum flux)
2 2
2
2.5
3
0 4
0.5
0.6
Pre
cips)
precipitation measurements (No.3) TERC
1
1.5
2
0.2
0.3
0.4
pitation (m
m/30mo
n v
elo
city
（m
/
0
0.5
0
0.1
:00
:00
:00
:00
:00
:00
:00
:00
:00
:00
min
)
Fricti
2010/3/1
12:
2010/3/2
12:
2010/3/3
12:
2010/3/4
12:
2010/3/5
12:
2010/3/6
12:
2010/3/7
12:
2010/3/8
12:
2010/3/9
12:
2010/3/1
0 1
2:
2.5
3
60
80
100
Pre
c/s)
precipitation No.1 No.2 No.3
2.5
3
0
0.5
Pre
)
precipitation No.1 No.2 No.3
1
1.5
2
-20
0
20
40
cipitatio
n (m
m/3fl
ux
(μm
ol/
m2/
1
1.5
2
1 5
-1
-0.5
cipitatio
n (m
m/te
mpe
ratu
re (-)
0
0.5
1
-100
-80
-60
-40
0 0 0 0 0 0 0 0 0 0
30m
in)C
O2
0
0.5
1
-2.5
-2
-1.5
30m
in)
Friction
2010/3/1
12:0
0
2010/3/2
12:0
0
2010/3/3
12:0
0
2010/3/4
12:0
0
2010/3/5
12:0
0
2010/3/6
12:0
0
2010/3/7
12:0
0
2010/3/8
12:0
0
2010/3/9
12:0
0
2010/3/1
0 1
2:0
0
2010/3/1
12:0
0
2010/3/2
12:0
0
2010/3/3
12:0
0
2010/3/4
12:0
0
2010/3/5
12:0
0
2010/3/6
12:0
0
2010/3/7
12:0
0
2010/3/8
12:0
0
2010/3/9
12:0
0
2010/3/1
0 1
2:0
0
CO2 Flux
2
2. test of automatic station shutdown at the time of met and
flux data
This station is designed to automatically be shut down and restarted at the time of battery voltage problem. When the battery voltage decreases below 11.7V, sonic anemometer, gas analyzer, and fan for hygrothermometer will be shut down. When the voltage returns back to >12.4V, they will restart automatically. Voltage check is routinely made at 10Hz.
This feature is needed to protect battery from permanent damage, and allow continuous measurements by other sensors (which use only small electricity).
This was tested with No.1 station operated by solar panels and only three batteries.
friction velocity from sonic anemometer water vapor density by gas analyzer
0.4
0.5
0.6
（m
/s)
measurements (No.1)
15
20
25
30
㎥)
measurements from H2O analyzer (No.1)
0
0.1
0.2
0.3
riction v
elo
city
（
5
0
5
10
15
2O
densi
ty (
g/㎥
0
2010/3/…
2010/3/…
2010/3/…
2010/3/…
2010/3/…
2010/3/…
2010/3/…
2010/3/…
2010/3/…
2010/3/…
Fr
-5
0/3/1 1
2:0
0
0/3/2 1
2:0
0
0/3/3 1
2:0
0
0/3/4 1
2:0
0
0/3/5 1
2:0
0
0/3/6 1
2:0
0
0/3/7 1
2:0
0
0/3/8 1
2:0
0
0/3/9 1
2:0
0
/3/10 1
2:0
0
H2
15
16measurements (No.1)
201
201
201
201
201
201
201
201
201
2010
30‐min mean battery voltage
TBL400 file indicates that battery voltage becomes
11
12
13
14
ry v
oltag
e (
V) TBL400 file indicates that battery voltage becomes
<11.7V at 17:31 on 3/7, and permanently comes back >12.4V at 6:35 on 3/8.
Clearly during this power failure station stoped10
/3/1 1
2:0
0
/3/2 1
2:0
0
/3/3 1
2:0
0
/3/4 1
2:0
0
/3/5 1
2:0
0
/3/6 1
2:0
0
/3/7 1
2:0
0
/3/8 1
2:0
0
/3/9 1
2:0
0
3/10 1
2:0
0Bat
te Clearly during this power failure, station stopedautomatically to measure the sonic anemometer and gas analyzer.
2010/
2010/
2010/
2010/
2010/
2010/
2010/
2010/
2010/
2010/3
measurements (No.1)
air temperature
15
20
25（℃
）
5
10
15
Air t
em
pera
ture
（
0
0/3/1
12:0
0
0/3/2
12:0
0
0/3/3
12:0
0
0/3/4
12:0
0
0/3/5
12:0
0
0/3/6
12:0
0
0/3/7
12:0
0
0/3/8
12:0
0
0/3/9
12:0
0
/3/1
0 1
2:0
0
A
2010
2010
2010
2010
2010
2010
2010
2010
2010
2010/
TBL400 file indicates that battery voltage becomes <11.7V at 17:31 on 3/7, and permanently comes back >12.4V at 6:35 on 3/8.
Air temperature is not markedly be affected by the shut down of ventilation fan, it seems. This is reasonable as the shut down is during night time and effect of solar radiation should have been small.