BIOINFORMATIC MAPPING OF OCEAN BIOGEOCHEMICAL PROVINCES Matthew Oliver (U. Del.) Oscar Schofield (Rutgers) Andrew Irwin (Mt. Allison University) Paul Falkowski.

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Presentation transcript:

BIOINFORMATIC MAPPING OF OCEAN BIOGEOCHEMICAL PROVINCES Matthew Oliver (U. Del.) Oscar Schofield (Rutgers) Andrew Irwin (Mt. Allison University) Paul Falkowski (Rutgers)

Static, manual provinces Longhurst (1995, 1998, 2006)

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)

Automatic unsupervised classification Oliver et al (2004) JGR Oceans SeaWiFS MODIS/Aqua AVHRR SST

2006 Annual mean

Maps are quite similar Are they real?

Time Series

Province areas (sum of 3) ENSO indexes 2003 Jan2006 Dec

Jan 2006 Gyre area Jan 1998 To Dec 2006

Jan 2006 Gyre area Jan 1998 To Dec 2006

Total C fixation (g / d) Trend Combined Global Gyres Combined Tropical Seas Jan 1998Dec 2006

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

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

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

1%2%3%4%0% φ sat-NPQ 5% Nutrient Stress Index Iron LimitedNitrogen Limited

1%2%3%4%0% φ sat-NPQ 5% Nutrient Stress Index Iron LimitedNitrogen Limited

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

NMFS Fish Stock Indicators

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

argo

Contact Us Andrew Irwin: Poster 227 Matt Oliver: Poster 218 Oliver et al (2004) JGR Oceans