Project Funding: 2016 - 2021

NRA: 2014 NASA: Terrestrial Ecology   

Funded by NASA

Abstract:
The project described here will provide key data for the ABoVE science initiative on year-round CO2 and CH4 fluxes, and associated soil environmental, snow, and above ground environmental information from the longest running network of Arctic eddy covariance towers in the world. These are located on the North Slope of Alaska. The first tower was brought on line in Barrow at the Barrow Arctic NOAA site (US-Brw) in 1998 and the second brought on line in 1999 in Atqasuk, Alaska (US-Atq). In total, the project will operate and report flux and environmental data to the ABoVE community, including through AmeriFlux, for five long-term eddy covariance tower sites. These are comprised of three tower sites on the wet coastal tundra in Barrow spanning a well-drained wet coastal tundra site at NOAA CMDL GMD (US-Brw), a medium well-drained wet coastal tundra site on the Barrow Environmental Observatory (US-Beo), and an inundated wet coastal tundra site at the location of the southern end of the previous Biocomplexity Experiment (US-Bes). The other tower sites include a sandy, non-acidic, moist tussock tundra site in Atqasuk (US-Atq) and a southern moist tussock tundra site in the foothills of the Brooks Range at Ivotuk (US-Ivo). Taken together, these tower sites span a moisture gradient on the coast from well drained to inundated wet tundra, and a north-south latitudinal gradient of approximately 300km. The research described here includes 3 years of data collection and a fourth year to complete data reduction, QA/QC, gap filling, and reporting to the AmeriFlux Network. Data will be made available to ABoVE project scientists and collaborators through AmeriFlux, the ABoVE Science Cloud, and the GCRG SDSU Server.

Publications:

Arndt, K. A., Oechel, W. C., Goodrich, J. P., Bailey, B. A., Kalhori, A., Hashemi, J., Sweeney, C., Zona, D. 2019. Sensitivity of Methane Emissions to Later Soil Freezing in Arctic Tundra Ecosystems. Journal of Geophysical Research: Biogeosciences. 124(8), 2595-2609. DOI: 10.1029/2019JG005242

Arndt, K. A., Santos, M. J., Ustin, S., Davidson, S. J., Stow, D., Oechel, W. C., Tran, T. T. P., Graybill, B., Zona, D. 2019. Arctic greening associated with lengthening growing seasons in Northern Alaska. Environmental Research Letters. 14(12), 125018. DOI: 10.1088/1748-9326/ab5e26

Davidson, S. J., Sloan, V. L., Phoenix, G. K., Wagner, R., Fisher, J. P., Oechel, W. C., Zona, D. 2016. Vegetation Type Dominates the Spatial Variability in CH4 Emissions Across Multiple Arctic Tundra Landscapes. Ecosystems. 19(6), 1116-1132. DOI: 10.1007/s10021-016-9991-0

Davidson, S., Santos, M., Sloan, V., Reuss-Schmidt, K., Phoenix, G., Oechel, W., Zona, D. 2017. Upscaling CH4 Fluxes Using High-Resolution Imagery in Arctic Tundra Ecosystems. Remote Sensing. 9(12), 1227. DOI: 10.3390/rs9121227

Davidson, S., Santos, M., Sloan, V., Watts, J., Phoenix, G., Oechel, W., Zona, D. 2016. Mapping Arctic Tundra Vegetation Communities Using Field Spectroscopy and Multispectral Satellite Data in North Alaska, USA. Remote Sensing. 8(12), 978. DOI: 10.3390/rs8120978

Hashemi, J., Zona, D., Arndt, K. A., Kalhori, A., Oechel, W. C. 2021. Seasonality buffers carbon budget variability across heterogeneous landscapes in Alaskan Arctic Tundra. Environmental Research Letters. DOI: 10.1088/1748-9326/abe2d1

Luus, K. A., Commane, R., Parazoo, N. C., Benmergui, J., Euskirchen, E. S., Frankenberg, C., Joiner, J., Lindaas, J., Miller, C. E., Oechel, W. C., Zona, D., Wofsy, S., Lin, J. C. 2017. Tundra photosynthesis captured by satellite-observed solar-induced chlorophyll fluorescence. Geophysical Research Letters. 44(3), 1564-1573. DOI: 10.1002/2016GL070842

Parazoo, N. C., Arneth, A., Pugh, T. A. M., Smith, B., Steiner, N., Luus, K., Commane, R., Benmergui, J., Stofferahn, E., Liu, J., Rodenbeck, C., Kawa, R., Euskirchen, E., Zona, D., Arndt, K., Oechel, W., Miller, C. 2018. Spring photosynthetic onset and net CO 2 uptake in Alaska triggered by landscape thawing. Global Change Biology. 24(8), 3416-3435. DOI: 10.1111/gcb.14283

Virkkala , A., Natali, S. M., Rogers, B. M., Watts, J. D., Savage, K., Connon, S. J., Mauritz, M., Schuur, E. A. G., Peter, D., Minions, C., Nojeim, J., Commane, R., Emmerton, C. A., Goeckede, M., Helbig, M., Holl, D., Iwata, H., Kobayashi, H., Kolari, P., Lopez-Blanco, E., Marushchak, M. E., Mastepanov, M., Merbold, L., Parmentier, F. W., Peichl, M., Sachs, T., Sonnentag, O., Ueyama, M., Voigt, C., Aurela, M., Boike, J., Celis, G., Chae, N., Christensen, T. R., Bret-Harte, M. S., Dengel, S., Dolman, H., Edgar, C. W., Elberling, B., Euskirchen, E., Grelle, A., Hatakka, J., Humphreys, E., Jarveoja, J., Kotani, A., Kutzbach, L., Laurila, T., Lohila, A., Mammarella, I., Matsuura, Y., Meyer, G., Nilsson, M. B., Oberbauer, S. F., Park, S., Petrov, R., Prokushkin, A. S., Schulze, C., St. Louis, V. L., Tuittila, E., Tuovinen, J., Quinton, W., Varlagin, A., Zona, D., Zyryanov, V. I. 2022. The ABCflux database: Arctic-boreal CO<sub>2</sub> flux observations and ancillary information aggregated to monthly time steps across terrestrial ecosystems. Earth System Science Data. 14(1), 179-208. DOI: 10.5194/essd-14-179-2022

Wilkman, E., Zona, D., Tang, Y., Gioli, B., Lipson, D. A., Oechel, W. 2018. Temperature Response of Respiration Across the Heterogeneous Landscape of the Alaskan Arctic Tundra. Journal of Geophysical Research: Biogeosciences. 123(7), 2287-2302. DOI: 10.1029/2017jg004227

More details may be found in the following project profile(s):

• NASA Terrestrial Ecology (TE) Project Profile
• NASA Arctic-Boreal Vulnerability Experiment (ABoVE) Project Profile