Post-doctoralpositioninAtmosphericGeochemistry

AspartoftheFrenchRegionalProgramCLIMIBIO(PlanningAgreementbetweenthenationalandregionalgovernments2015-2020,http://climibio.univ-lille.fr/),the“UniversityoftheLittoralOpalCoast”inthenorthofFranceislookingforapost-doctoralresearchertocontributetoaProjectinAtmosphericGeochemistry.Description

Traceelementsincludingiron(Fe)serveasessentialmicronutrientsinsurfaceoceanwaters.IroninatmosphericdepositionrepresentsthemainsourceofbioavailableFetoHighNutrientLowChlorophylloceanregions(e.g.theSouthernOcean).Whilenaturalemissions(e.g.mineraldust)areconsideredthemostimportantsourcesofatmosphericFe,theaqueoussolubility of natural Fe-bearing particles is very limited. Conversely, anthropogenic Fe-richparticles including fly ash (combustion aerosols) display a higher solubility. How humanactivities impact the transport of bioavailable Fe to the oceans remains a fundamentalquestionbeingaddressedinatmosphericandoceanographicstudies.

Withtherecentadvancesinmassspectrometry,itisnowpossibletomeasureprecisely

smalldifferencesinFeisotopiccompositionsastheyoccurinmanyphysical,geochemicalandbiologicalprocesses.Whiletheisotopicsignatureofradiogenicisotopessuchasleadhasbeenwidelyusedtoassessthecontributionofpollutionaerosolstotransportanddepositionfluxesinthelowtroposphere,theuseofnon-traditionalheavystableisotopessuchasFeisstillrareinatmosphericprocessstudies.ThereportedvaluesforFeisotopecompositionsofnaturalaerosols (mineral dust: δ56Fe ≈ +0.08‰ /IRMM-014) are close to those of igneous rocks.However,ourpreviousworkhasshownδ56Fereaching+0.14‰inurbanaerosolsinfluencedbyindustrialemissions.ThisprojectwilltentativelyassesstheisotopicimprintofatmospherictransportonanthropogenicandnaturalFebysimulatingcloudprocessingofindustrialandurbanFe-bearingparticles. Isotopicanalysiswillbeconducted incollaborationwith theG-TIMElaboratoryoftheUniversitéLibredeBruxelles(Belgium).

Toinvestigatethemechanismscontrollingtheisotopefractionationatthemolecularscale, first-principles calculations based on the density functional theory (DFT) will beperformed on Fe minerals mimicking studied anthropogenic Fe-bearing particles (e.g.goethite).

Thisprojectisfundedbythe“UniversitéduLittoral-Côted’Opale”,theRegion«Hauts

deFrance»andtheFrenchMinistryforHigherEducationandResearch(CPER“Climibio”).CandidateProfile

Theidealapplicantwillhave:.APhDinAnalyticalChemistryorGeochemistry.Experiencewithisotopeand/ortracemetalanalysisundercleanconditions.Experiencewithadvancedanalyticalinstrumentation,suchasmassspectrometry.Experienceoffieldstudiesand,ifpossible,quantumchemistry.Enthusiasmanddiligenceinlaboratorywork.Knowledgeofsecurityrulesinthelabandinthefield.Interestinpresentingresultsatconferencesandwritingpapersforpeer-reviewedjournals.Abilitytocommunicateandworkwithmultiplestudentsandscientists.Abilitytotraveltofieldstudiesandtothedifferentregionalpartners’sites(about120kmfromDunkirk):Driver’slicenseforprivatecar..Someknowledgeof/willingnesstolearnbasicFrenchLocation:Dunkerque(Dunkirk)–NorthofFranceDuration:12months,startingnolaterthan1stJanuary2018MonthlyTake-homePay:about2150€HolidayAllowance:6weeksApplication:Toapply,sendtoPascalFlament,UniversitéduLittoral–Côted’Opale,Dunkerque,France(pascal.flament@univ-littoral.fr):

- ACurriculumVitae,includingapublicationlist- Amotivationletter- Aselectionof2-3publicationsinPDF- Thenameandcontactinformationof2references.

Deadlineforapplications:October20th2017