Search results for "Roger A Revelle"

showing 3 items of 3 documents

Global distributions of diazotrophs abundance and biomass - Depth integrated values computed from a collection of source datasets - Contribution to t…

2013

The MAREDAT atlas covers 11 types of plankton, ranging in size from bacteria to jellyfish. Together, these plankton groups determine the health and productivity of the global ocean and play a vital role in the global carbon cycle. Working within a uniform and consistent spatial and depth grid (map) of the global ocean, the researchers compiled thousands and tens of thousands of data points to identify regions of plankton abundance and scarcity as well as areas of data abundance and scarcity. At many of the grid points, the MAREDAT team accomplished the difficult conversion from abundance (numbers of organisms) to biomass (carbon mass of organisms). The MAREDAT atlas provides an unprecedente…

Go-Flo bottlesSalinityCAIBEX-IRV Kilo MoanaDiazotrophs total biomass as carbonUniform resource locator link to source data fileNitrateRichelia carbon per cellCTD/RosetteLatitude of eventNiskinRoger A RevelleTemperature waterCalculatedtop minbiomass as carbonTrichodesmium biomass as carbontotalbottom maxCTD Seabirdareal concentrationMultiple investigationsTemperatureDepth top/minRichelia abundance cellsCTD RosetteSeabirdCalothrixRoger A. RevelleTrichodesmiumTrichodesmium carbon per trichomeEarth System ResearchRichelia abundanceCAIBEX-IICalothrix abundanceMARine Ecosystem Model Intercomparison Project MAREMIPDiazotrophsLongitude of eventRichelia associated speciesSample methodIronChlorophyll total areal concentrationBottle NiskinwaterTrichodesmium abundance free trichomesMARine Ecosystem Model Intercomparison Project (MAREMIP)PhosphateSarmiento de GamboaSample commentCAIBOXUniform resource locator/link to source data filetotal biomass as carbonCalothrix carbon per cellHeterocyst biomassGo Flo bottlescoloniesDate/Time of eventChlorophyll totalTrichodesmium abundance totalRicheliaDEPTH waterTrichodesmium abundance coloniesMP-6biomassBottleDepthEvent labelDate Time of eventCAIBEX IIcarbon per cellMeasured at sea surfacefree trichomesMP-9CTDCalothrix abundance cellscarbon per trichomeTrichodesmium abundanceCalothrix associated speciesMP 9MP 6CAIBEX IcellsDepth bottom/maxassociated speciesHeterocyst
researchProduct

Global distributions of diazotrophs nitrogen fixation rates - Depth integrated values computed from a collection of source datasets - Contribution to…

2013

The MAREDAT atlas covers 11 types of plankton, ranging in size from bacteria to jellyfish. Together, these plankton groups determine the health and productivity of the global ocean and play a vital role in the global carbon cycle. Working within a uniform and consistent spatial and depth grid (map) of the global ocean, the researchers compiled thousands and tens of thousands of data points to identify regions of plankton abundance and scarcity as well as areas of data abundance and scarcity. At many of the grid points, the MAREDAT team accomplished the difficult conversion from abundance (numbers of organisms) to biomass (carbon mass of organisms). The MAREDAT atlas provides an unprecedente…

Go-Flo bottlesSalinityCAIBEX-ITrichodesmium nitrogen fixation rateRV Kilo MoanaUniform resource locator link to source data fileNitrateCTD/RosetteLatitude of eventNiskinAlisRoger A RevelleTemperature waterwhole seawatertop minCalculatedbottom maxareal concentrationNitrogen fixation rateTemperatureDepth top/minCTD RosetteUnicellular cyanobacteria nitrogen fixation rateTrichodesmiumRoger A. RevelleNitrogen fixation rate integrated per dayEarth System ResearchMooring (long time)CAIBEX-IIMARine Ecosystem Model Intercomparison Project MAREMIPDiapalis 3Longitude of eventDiapalis 4Diapalis 5Sample methodIronwaterChlorophyll total areal concentrationBottle NiskinWater pumpMARine Ecosystem Model Intercomparison Project (MAREMIP)PhosphateWater sampleSarmiento de GamboaSample commentCAIBOXDiapalis 6Diapalis 7Uniform resource locator/link to source data fileDiapalis 9Go Flo bottlesNitrogen fixation rate whole seawaterintegrated per dayUnicellular cyanobacteriaDate/Time of eventChlorophyll totalMooring long timeDiapalis-7Diapalis-9Diapalis-3Diapalis-4Diapalis-5Diapalis-6DEPTH waterMP-6BottleDepthEvent labelDate Time of eventCAIBEX IIMeasured at sea surfaceMP-9MP 9MP 6CAIBEX IDepth bottom/maxHeterocyst nitrogen fixation rateHeterocyst
researchProduct

(Table 1) Sea surface temperature reconstruction for eastern equatorial Pacific surface sediment samples

2012

Significant uncertainties persist in the reconstruction of past sea surface temperatures in the eastern equatorial Pacific, especially regarding the amplitude of the glacial cooling and the details of the post-glacial warming. Here we present the first regional calibration of alkenone unsaturation in surface sediments versus mean annual sea surface temperatures (maSST). Based on 81 new and 48 previously published data points, it is shown that open ocean samples conform to established global regressions of Uk'37 versus maSST and that there is no systematic bias from seasonality in the production or export of alkenones, or from surface ocean nutrient concentrations or salinity. The flattening…

Reference sourceRC23RR9702ASea surface temperatureannual meaninterpolatedV21Roger A RevellePiston corer (BGR type)ME0005Aunsaturation index UK 37VemaKNR182 91988RC18Marion Dufresne (1995)Hakuho MaruKH-03-1MultiCorerTemperaturePiston corer BGR typeAMPHITRITEsediment rockRoger A. RevelleKH 03 1Earth System ResearchLeg138Robert ConradCoreWecomaCalculated from UK 37 Prahl et alPiston corerMoana WaveLongitude of eventHakuho-MaruAlkenone unsaturation index UK'37Thomas WashingtonW7706differenceKNR176-2KNR195-5Leg201DEPTH sediment/rockVNTR01SO147PLDS 3Sea surface temperature annual meanPLDS-3Giant piston corerMW8708MelvilleMD126Marion Dufresne 1995KnorrRC11RC13Event labelJoides ResolutionYALOC69Calculated from UK'37 (Prahl et al. 1988)V19ArgoSonneKNR176 2KNR195 5DEPTHYaquinaKNR182-9Gravity corerTemperature differenceBox corerAlkenoneComposite CoreSCANReference/source
researchProduct