caa a22 4500 605472785 CHVBK 20210128100339.0 cr unu---uuuuu 210128e20151101xx s 000 0 eng 10.1007/s00382-015-2496-2 doi (NATIONALLICENCE)springer-10.1007/s00382-015-2496-2 Effect of high-frequency wind on intraseasonal SST variabilities over the mid-latitude North Pacific region during boreal summer [Elektronische Daten] [Lu Wang, Tim Li, Tianjun Zhou] The effect of high-frequency (period <20days) wind on the intraseasonal (period 20-100days) sea surface temperature (SST) anomalies over the mid-latitude North Pacific region (35°-45°N, 160°E-170°W) during boreal summer was examined through the diagnosis of reanalysis data and numerical experiments. The reanalysis data diagnosis shows that the near-surface high-frequency (HF) wind is weaker (stronger) during the intraseasonal SST warming (cooling) phase. The phase-dependent amplitude of HF wind is controled by the strength change of the upper-tropospheric westerly jet stream. Because the magnitude of the HF wind over the target region shows significantly positive correlation with the total wind speed, a weaker (higher) HF wind in the SST warming (cooling) phase tends to decrease (increase) total wind speed, which can further suppress (enhance) upward surface latent heat and sensible heat fluxes and strengthen the intraseasonal SST variability. The numerical experiments with an oceanic general circulation model demonstrate that the HF wind can amplify the intraseasonal SST variability over the target region mainly through nonlinearly rectifying intraseasonal surface latent and sensible heat fluxes. The HF wind can explain about 20% of the intraseasonal SST variability in the target region. Springer-Verlag Berlin Heidelberg, 2015 Sea surface temperature nationallicence Intraseasonal oscillation nationallicence High frequency wind nationallicence Air-sea interaction nationallicence Upscale feedback nationallicence North Pacific nationallicence Wang Lu International Laboratory on Climate and Environment Change and Key Laboratory of Meteorological Disaster, Nanjing University of Information Science and Technology, Nanjing, China aut Li Tim International Laboratory on Climate and Environment Change and Key Laboratory of Meteorological Disaster, Nanjing University of Information Science and Technology, Nanjing, China aut Zhou Tianjun LASG, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China aut Climate Dynamics Springer Berlin Heidelberg 45/9-10(2015-11-01), 2607-2617 0930-7575 45:9-10<2607 2015 45 382 https://doi.org/10.1007/s00382-015-2496-2 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00382-015-2496-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Wang Lu International Laboratory on Climate and Environment Change and Key Laboratory of Meteorological Disaster, Nanjing University of Information Science and Technology, Nanjing, China aut NATIONALLICENCE 700 1- Li Tim International Laboratory on Climate and Environment Change and Key Laboratory of Meteorological Disaster, Nanjing University of Information Science and Technology, Nanjing, China aut NATIONALLICENCE 700 1- Zhou Tianjun LASG, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China aut NATIONALLICENCE 773 0- Climate Dynamics Springer Berlin Heidelberg 45/9-10(2015-11-01), 2607-2617 0930-7575 45:9-10<2607 2015 45 382