Marine Science IGBP Partners in the 21st Century

1
Introduction to Remote Sensing
2
A legacy of the Apollo Program was a commitment
to use space technology to study the Earth
3
A legacy of the Apollo Program was a commitment
to use space technology to study the Earth
Today we routinely study the land, atmosphere,
and oceans from platforms in space
4
(No Transcript)
5
(No Transcript)
6
This is an infrared image of the Gulf of Maine
region that has been converted to temperature
7
(No Transcript)
8
The satellite remote sensing images served by
GoMOOS are from several satellites
This is a sea surface temperature (SST) image
derived from an Advanced Very High Resolution
Radiometer (AVHRR) sensor onboard a NOAA
satellite.
This is a chlorophyll (Chl) image derived from
the Sea-viewing Wide Field-of-view Sensor
(SeaWiFS) onboard the OrbView-2 satellite
operated by ORBIMAGE.
9
The satellite remote sensing images served by
GoMOOS are from several satellites
This is a sea surface temperature (SST) image
derived from an Advanced Very High Resolution
Radiometer (AVHRR) sensor onboard a NOAA
satellite.
This is a chlorophyll (Chl) image derived from
the Sea-viewing Wide Field-of-view Sensor
(SeaWiFS) onboard the OrbView-2 satellite
operated by ORBIMAGE.
10
This shows the coverage of the SeaWiFS in a
single day. On the next day, SeaWiFS will pass
over the blank (black) areas, thus acquiring
complete global coverage every two days but
cloudiness limits the view.
11
Multispectral Capabilites
Quasi-True Color
are used to quantify the density of
biomass

• 8 bands in visible and near infrared

12
0
Land vegetation
Ocean chlorophyll, mg/m3
90
13
Global Biosphere March 2002
14
Global Biosphere April 2002
15
Global Biosphere May 2002
16
(No Transcript)
17
Half of all primary production occurs in the
ocean
where it is carried out by microalgae
(phytoplankton)
18
(No Transcript)
19
(No Transcript)
20
(No Transcript)
21
All satellite remote sensors detect
electromagnetic radiation (EMR)
22
Multispectral Capabilites
Quasi-True Color
The ratio of the blue band (443 nm) to the green
band (555 nm) is used to derive the chlorophyll
concentration in the ocean.
23
Effect of Chlorophyll on Water Reflectance Spectra
clear blue water
green water
24
Coastal Zone Color Scanner (CZCS) Pigment
Algorithm
25
CZCS Global Climatology (Nov. 1978Jun. 1986)
26
SeaWiFS Chlorophyll Algorithm (OC4.V4, OReilly
et al., 2000)
27
SeaWiFS composite image (19972000)
28
For most ocean waters, phytoplankton are the
only substance affecting the color of the
water. These waters are called Case 1 waters.
29
(No Transcript)
30
Todays research is focusing on the coastal
ocean Unlike the Case 1 waters of the open
ocean, where phytoplankton are the only substance
affecting the color of the water, there are
numerous substances affecting the color of
coastal waters

• dissolved organic matter
• suspended sediment
• phytoplankton pigments

These are called Case 2 waters.
31
(No Transcript)
32
This is a true color image acquired on April
12, 1998.
33
This is a true color image acquired on
September 23 1999, following passage of Hurricane
Floyd.
34
The mission of the university is to educate the
next generation to use todays technologies
..for Earth and environmental sciences.
35
December 1972
36
30 years later
37
How could we have imagined todays technology 30
years ago?
How do we prepare students for a future we cant
even imagine?
38
(No Transcript)