BIOINFORMATIC MAPPING OF OCEAN BIOGEOCHEMICAL PROVINCES

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BIOINFORMATIC MAPPING OF OCEAN BIOGEOCHEMICAL
PROVINCES

• Matthew Oliver (U. Del.)
• Oscar Schofield (Rutgers)
• Andrew Irwin (Mt. Allison University)
• Paul Falkowski (Rutgers)

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Static, manual provinces

• Longhurst (1995, 1998, 2006)

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Questions

• Can We Make Dynamic Provinces (space-time
  variant)?
• Why?
• Biome boundaries are predictive of hydrography
• Changes in biome size and distributions are
  bellwethers for cyclical and secular earth cycles
• True comparative analysis by controlling for
  advection (ie making provinces a quantitative
  measurement)

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Automatic unsupervised classification
SeaWiFSMODIS/AquaAVHRR SST

• Oliver et al (2004) JGR Oceans

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2006 Annual mean
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Maps are quite similarAre they real?
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Time Series
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ENSO indexes
Province areas (sum of 3)
2003 Jan
2006 Dec
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Jan 2006

• Gyre area
• Jan 1998
• To
• Dec 2006

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Jan 2006

• Gyre area
• Jan 1998
• To
• Dec 2006

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Informational Content in MODIS and Sea-WiFS/AVHRR
are highly similar
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Where are we?

• Have a verified method to make dynamic and
  quantitative maps
• Automatic Biomes reflect expert knowledge
• Biomes are change in response to well known
  global processes
• Biomes are being used to find cyclical and
  secular change in the ocean environment
• Comparative analysis of primary production in
  provinces

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Where are we going?

• Iron Dust Impacts?
• Linking MODIS and Sea-WiFS/AVHRR records together
• Biomes/Water Masses as Fisheries Indicators
• Adding 3-D Structures to Biomes

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Iron Limited
Nitrogen Limited
1
2
3
4
0
5
-2
2
1
0
-1
fsat-NPQ
Nutrient Stress Index
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Iron Limited
Nitrogen Limited
1
2
3
4
0
5
-2
2
1
0
-1
fsat-NPQ
Nutrient Stress Index
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Where are we going?

• Iron Dust Impacts?
• Linking MODIS and Sea-WiFS/AVHRR records together
• Biomes/Water Masses as Fisheries Indicators
• Adding 3-D Structures to Biomes

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NMFS Fish Stock Indicators
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Where are we going?

• Iron Dust Impacts?
• Linking MODIS and Sea-WiFS/AVHRR records together
• Biomes/Water Masses as Fisheries Indicators
• Adding 3-D Structures to Biomes

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argo
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Contact Us

• Andrew Irwin airwin_at_mta.ca
• Poster 227
• Matt Oliver moliver_at_udel.edu
• Poster 218
• Oliver et al (2004) JGR Oceans