gleon update finland, march 2007
DESCRIPTION
GLEON update Finland, March 2007. N. Rotorua Lakes District. Diel oxygen data: Lake Rotorua. ~ 4 months of surface DO measurement every 15 min. General trend of decreasing DO with increasing temperature. Strong variation at scales < 1 day. Diel oxygen data: Lake Rotorua. - PowerPoint PPT PresentationTRANSCRIPT
GLEON update
Finland, March 2007
N
Rotorua Lakes District
Diel oxygen data: Lake Rotorua
• ~ 4 months of surface DO measurement every 15 min.
• General trend of decreasing DO with increasing temperature.
• Strong variation at scales < 1 day.
8
9
10
11
12
13
20-Sep 04-Oct 18-Oct 01-Nov 15-Nov 29-Nov 13-Dec 27-Dec 10-Jan
Dis
solv
ed o
xyge
n [m
g L -
1 ]
11
12
13
14
15
16
17
18
19
20
21
Tem
pera
ture
[ oC
]
DO
Temperature
Diel oxygen data: Lake Rotorua
Example:
Example: 3 weeks, 30 Oct to 20 Nov 2006.
9
10
11
12
30-Oct 06-Nov 13-Nov 20-Nov
Dis
solv
ed o
xyge
n [m
g L -
1 ]
13
14
15
16
17
18
Tem
pera
ture
[ oC
]
DO
Temperature
L. Rotorua
L. Rotoiti:Narrows
L. Tarawera
L. Rotoiti:Crater
Tarawera:Weather station
Projected remote monitoring sites
Currently live:Tarawera weather station
Prototype lake buoy:Lake Rotorua (Mar/Apr 2007)
Sites to come: Lake Rotoiti: crater and narrowsLake Tarawera
Monitoring buoy
Delivered Dec 2006; the fitting of the electronics is (almost) complete, and deployment is being arranged with local authorities.
DO
Th
erm
istor strin
g (1
1 se
nso
rs, on
e e
very
2 m
ete
rs)
~ 20m
redox/nitrate/temp
pH/chloride/temp
• Datalogger – iQuest “DS-4483” logger
Initial deployment:
• Thermistor string - Apprise Technologies “TempLine”
• Dissolved oxygen - Zebra-tech “d-opto” optical sensors
• Fluorometer – Seapoint chlorophyll fluorometer
Sensors to be added later:
• pH and chloride – INW “TempHion T3” sensors
• Irradiance – Appogee QSO quantum sensors
Buoy station sensors
DO
chl a
pH/chloride/temp
~1 m
Light meters
• NZ company “iQuest” remote monitoring network “Hydrotel”
https://data.iquest.co.nz/hydrotel
Telemetry/databasing
Login: guestPasswd: guest
This login allows access to 2 weather stations, as a demo of the hydrotelinerface