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ideas and concepts
Ideas source material relevant to the work to be sources of material to ontologize.
Global warming associated information
Diatom Phenology in the Southern Ocean: Mean Patterns, Trends and the Role of Climate Oscillations
Particle sedimentation patterns in the eastern Fram Strait during 2000–2005
Physical and ecological processes at a moving ice edge in the Fram Strait as observed with an AUV
from the eskp linked litter database page there is a nice info graphic showing the global composition of marine litter. thus to add to envo to support the marine plastics dataset I am working with here
additionally this work has various sediment types as data, so expanding ENVO sediment types to fit this and cleaning that up is in order.
to help locate the data lat long depth
for depth import pato depth make water depth: a water body which bears quality depth ...
ideas from DOOS talking about the oceans absorbing the heat accumulated in the climate, terms like:
thermal expansion (in water)
Carbon sequestration
Essential Ocean Variables. terms from PHYSICS, BIOGEOCHEMISTRY, BIOLOGY AND ECOSYSTEMS which GOOS is wanting to make more connectable. Thus it could be cool to add this. links to GOOS version of physical ones here Also expressed on the International Ocean Carbon Coordination Project page
Perhaps in addition to ontologizing information around the awi dataset: Snow height on sea ice, I could address some of the sea ice related issues in this eskp article
Biogeography and Photosynthetic Biomass of Arctic Marine Pico-Eukaroytes during Summer of the Record Sea Ice Minimum 2012 Paper from Dr. Katja Metfies
ideas to ontologize from her paper:
Light penetration through first-year ice is significantly higher than through multi-year ice
I've already created these sea ice classes in my rotation so I could reuse those classes to help ontologize light penetration in sea ice.
if the sea ice volume decline continues, a point may be reached in the future when not enough sea ice is advected into the Nansen Basin for halocline formation to occur and a regime shift to deep convection would occur (B. Rudels, personal communication 2015).
Compared to the Central Arctic, the stratification was relatively low in eastern Fram Strait with a density difference between 10 and 50 m This is conducive to mixing of the water in the euphotic zone with the waters below and therefore nutrients can be resupplied to the euphotic zone during the growth period.
Distribution of Chl a biomass and biogeographic patterns of pico-eukaryote communities were best understood in relation to ambient water mass characteristics and sea ice coverage.
Ideas for classes:
sea ice advection
halocline*
halocline formation process*
halocline formation region* (perhaps spatiotemporal location?)
primary productivity
marine water masses* (of different salinity, temperature, stratification and nutrient concentration.)
marine water masses mixing process* (can lead to nutrient resupply of deep nutrient rich waters to nutrient replete photic zone waters).
passive lateral advection (in the water column)
vertical mixing (in the water column)
cyclonic boundary current
salinity stratification (density difference with depth)
freezing line of sea water ("Arctic halocline")
isopycnals
nutrient replete waters (nutrient poor waters, perhaps a quality of water mass?)
continental runoff
riverine discharge
Chl a maximum
phytoplankton biomass
nutrient supply in marine water mass
sea ice coverage (spatiotemporal location where sea ice covers water) * this could be super useful for the Tilman satelite data we are going to work with.
light availability
marginal ice zone (MIZ)
Transpolar Drift
euphotic zone
sea ice retreat
nutrient limited ice covered regions
Changes in the phytoplankton phenology are therefore sensitive indicators of environmental change ref
ideas to ontologize:
diatom bloom (subclass of phytoplankton bloom)
Southern Antarctic Circumpolar Current Front
maximum sea ice extent (maximum sea ice cover)
ENSO El Niño-Southern Oscillation
Southern Annular Mode (SAM)
spring bloom a plankton bloom event which occurs in spring
surface mixed layer depth
sea ice cover
sea ice temperature
plankton blooms having biomass, timing, magnitude and duration
carbon pump
iron-limited water (subclass of nutrient limited waters)
Circumpolar Deep Water (not at this level of detail).
light penetration depth
subsurface plankton blooms (deeper than light penetration depth)
high solar zenith angle
Maximum Sea Ice Extent
some potential qualities: cloudiness, sea surface temperature, sea-level pressure, surface air temperature and the zonal and meridional components of the surface wind
ocean colour (to investigate phytoplankton phenology)
diatom associated chlorophyll a
seasonal ice zone
melting of ice increases the stratification of the water column which favors to maintain the phytoplankton in the euphotic zone
mixed layer depth
The end of the bloom occurs when the mixed layer deepens due to wind forcing, which dilutes the phytoplankton in the water column [12] and can bring them to lower light levels.
sea ice advection
sea ice temperature increase
sea ice melting
solar radiation
water column stability
water column mixed layer
water column mixed layer deepening process
diapycnal diffusion
surface waters
pelagic nutrient recycling
grazing pressure
algal viruses
upwelling
Ekman transport
polar aerosols
sea ice cover*
sea surface temperature
plankton biomass
integrate algal material (which Pier is adding to ENVO)
mixed layer depth
wind speed and direction
diatom biomass
environmental anomalies
// leads to a marine water mass formation process.
quotes from paper:
The location of the ice edge in the eastern Fram Strait is strongly controlled by wind and the advection of the warm Atlantic water. The latter provides heat, which is necessary to melt ice, from the south.
//so we need to represent the ideas that the spatiotemporal location of the ice edge, which Pier says to represent as an edge.
elevated fluxes during winter were attributed to sedimentation of ice-rafted detritus from the Svalbard region, released by melting of ice caused by the warm Atlantic surface waters in the area
// so warm surface water causually upstream of ice melting. // ice-rafted detritus gets sedimented.
The presence or absence of ice also fosters pelagic production, through influencing light penetration and stabilizing of the near surface water layer by melt water formation.
// stratification, vertical mixing govern nutrient supply and biomass formation in the euphotic zone (make sure we have these)
The presence or absence of ice also fosters pelagic production, through influencing light penetration and stabilizing of the near surface water layer by melt water formation.
//todo get terms and relations from this
// They discuss a bit about how sea ice melt (affected by winds currents and the mixing of water masses) seems to affect plankton communities and sedimentation of matter, there is a bloom following sea ice as it melts
// regions of ice cover, sea ice is transported by marine currents
// ice releases lithogenic matter
// the ice edge increases sedimentation
species assemblages that indicate the influence of the warm Atlantic water masses: pteropod Limacina retroversa, the coccolithophore Emiliania huxleyi and diatoms of the Rhizosolenia/Proboscia group.
species that indicate the influence of cold water masses pennate diatoms, Fragilariopsis spp. (mainly Fragilariopsis cylindrus) accompanied by species of the genus Navicula and Nitzschia. These species are regarded as cold-water and ice-associated organisms (von Quillfeldt, 2000, 2004)
// This is neat how people have identified plankton (seems like mainly diatom) species associated with cold and warm water masses. Could this serve as an ocean indicator? How would this be represented, would it have to be on an instance level because these species serve as indicators for specific water masses however if we know that physiologically certain species are cold or hot water adapted it should serve as universal.
Variations in the surface currents and ice regime seemingly trigger changes in patterns and composition of sedimenting matter and plankton communities in the eastern Fram Strait.
ideas for classes unmoved to envo page:
// primary production is casually upstream of sedimentation of biogenic components