Carbon dioxide and methane flux analysis over ABoVE domain during the 2017 ArctiCAP airborne measurement campaign: methods and early work

Luke Schiferl, Harvard University, schiferl@seas.harvard.edu (Presenter)
Róisín Commane, Harvard University, rcommane@seas.harvard.edu
Stephen Conley, Scientific Aviation, Inc., sconley@scientificaviation.com
Eugenie Euskirchen, University of Alaska, Fairbanks, seeuskirchen@alaska.edu
Manuel Helbig, Université de Montréal, manuel.helbig@umontreal.ca
John Henderson, Atmospheric and Environmental Research, Inc., jhenders@aer.com
Elyn Humphreys, Carleton University, elynhumphreys@cunet.carleton.ca
Miriam Hurkuck, Université de Montréal, mhurkuck@wlu.ca
Kristina Luus, Dublin Institute of Technology, niinaluus@gmail.com
Philip Marsh, Wilfrid Laurier University, pmarsh@wlu.ca
Kathryn McKain, NOAA ESRL GMD, kathryn.mckain@noaa.gov
Walter Oechel, San Diego State University, woechel@mail.sdsu.edu
William Quinton, Wilfrid Laurier University, wquinton@wlu.ca
Oliver Sonnentag, Université de Montréal, oliver.sonnentag@umontreal.ca
Colm Sweeney, NOAA/ESRL GMD, colm.sweeney@noaa.gov
Sonja Wolter, NOAA ESRL GMD, sonja.wolter@noaa.gov
Donatella Zona, San Diego State University, dzona@mail.sdsu.edu
Steven Wofsy, Harvard University, swofsy@seas.harvard.edu

The Arctic Carbon Atmospheric Profiles (ArctiCAP) project successfully measured carbon dioxide (CO₂) and methane (CH₄) atmospheric concentration vertical profiles in the ABoVE domain during six flight campaigns throughout April-November 2017. Here we highlight an early look at the measured concentrations during ArctiCAP and present the tools which will be used to calculate regional fluxes of CO₂ and CH₄. Using methods developed during the Carbon in the Arctic Reservoirs Vulnerability Experiment (CARVE) (2012-2014), we will quantify ABoVE-domain CO₂ and CH₄ fluxes seasonally and spatially and identify the sources and dominant processes in this area. A back-trajectory atmospheric transport model (WRF-STILT) initialized from ArctiCAP observation points will allow us to identify source regions for ArctiCAP sampled data. We use meteorological reanalysis (NARR), remote sensing products such as solar-induced fluorescence (SIF) and snow cover area, and flux tower data along with vegetation maps as inputs to an updated Polar Vegetation Photosynthesis and Respiration Model with SIF (PVPRM-SIF), which will be used as the CO₂ flux prior. Finally, we will perform an inversion using the aircraft observations, source footprints, and flux prior to obtain optimized CO₂ and CH₄ fluxes in time and space. This will allow us to develop an annual budget for CO₂ and CH₄ throughout the ABoVE domain, improving upon our understanding and representation of the carbon system in arctic and boreal ecosystems.

Associated Project(s): 

• Sweeney-01

Poster Location ID: 100

Session Assigned: Carbon Dynamics