FN Archimer Export Format PT J TI Variability in the global energy budget and transports 1985–2017 BT AF Liu, Chunlei Allan, Richard P. Mayer, Michael Hyder, Patrick Desbruyères, Damien Cheng, Lijing Xu, Jianjun Xu, Feng Zhang, Yu AS 1:1,2,9;2:2,3;3:4,7;4:5;5:6;6:8,10;7:1,9;8:1;9:1; FF 1:;2:;3:;4:;5:PDG-ODE-LOPS-OH;6:;7:;8:;9:; C1 South China Sea Institute of Marine Meteorology, Guangdong Ocean University, Zhanjiang, China Department of Meteorology, University of Reading, Reading, UK National Centre for Earth Observation, Reading, UK European Centre for Medium-Range Weather Forecasts, Reading, UK Met Office, Exeter, UK Laboratoire d’Océanographie Physique et Spatiale, Ifremer, University of Brest, CNRS, IRD, Plouzané, France Department of Meteorology and Geophysics, University of Vienna, Vienna, Austria ICCES, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China Shenzhen Institute of Guangdong Ocean University, Shenzhen, China Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, 266071, China C2 UNIV OCEAN CHINA, CHINA UNIV READING, UK NCEO, UK ECMWF, UK MET OFFICE, UK IFREMER, FRANCE UNIV VIENNA, AUSTRIA CHINESE ACAD SCI, CHINA UNIV SHENZHEN, CHINA CHINESE ACAD SCI, CHINA SI BREST SE PDG-ODE-LOPS-OH UM LOPS IN WOS Ifremer UMR copubli-europe copubli-int-hors-europe copubli-sud IF 4.375 TC 21 UR https://archimer.ifremer.fr/doc/00652/76383/77393.pdf https://archimer.ifremer.fr/doc/00652/76383/77394.docx LA English DT Article DE ;TOA flux;Net surface flux;Energy transport AB The study of energy flows in the Earth system is essential for understanding current climate change. To understand how energy is accumulating and being distributed within the climate system, an updated reconstruction of energy fluxes at the top of atmosphere, surface and within the atmosphere derived from observations is presented. New satellite and ocean data are combined with an improved methodology to quantify recent variability in meridional and ocean to land heat transports since 1985. A global top of atmosphere net imbalance is found to increase from 0.10 ± 0.61 W m−2 over 1985–1999 to 0.62 ± 0.1 W m−2 over 2000–2016, and the uncertainty of ± 0.61 W m−2 is related to the Argo ocean heat content changes (± 0.1 W m−2) and an additional uncertainty applying prior to 2000 relating to homogeneity adjustments. The net top of atmosphere radiative flux imbalance is dominated by the southern hemisphere (0.36 ± 0.04 PW, about 1.41 ± 0.16 W m−2) with an even larger surface net flux into the southern hemisphere ocean (0.79 ± 0.16 PW, about 3.1 ± 0.6 W m−2) over 2006–2013. In the northern hemisphere the surface net flux is of opposite sign and directed from the ocean toward the atmosphere (0.44 ± 0.16 PW, about 1.7 ± 0.6 W m−2). The sea ice melting and freezing are accounted for in the estimation of surface heat flux into the ocean. The northward oceanic heat transports are inferred from the derived surface fluxes and estimates of ocean heat accumulation. The derived cross-equatorial oceanic heat transport of 0.50 PW is higher than most previous studies, and the derived mean meridional transport of 1.23 PW at 26° N is very close to 1.22 PW from RAPID observation. The surface flux contribution dominates the magnitude of the oceanic transport, but the integrated ocean heat storage controls the interannual variability. Poleward heat transport by the atmosphere at 30° N is found to increase after 2000 (0.17 PW decade−1). The multiannual mean (2006–2013) transport of energy by the atmosphere from ocean to land is estimated as 2.65 PW, and is closely related to the ENSO variability. PY 2020 PD DEC SO Climate Dynamics SN 0930-7575 PU Springer Science and Business Media LLC VL 55 IS 11-12 UT 000570476400003 BP 3381 EP 3396 DI 10.1007/s00382-020-05451-8 ID 76383 ER EF