Current GCMs’ Unrealistic Negative Feedback in the Arctic Export

@article{citeulike:5687534, abstract = {The large spread of the response to anthropogenic forcing simulated by state-of-the-art climate models in the Arctic is investigated. A feedback analysis framework specific to the Arctic is developed to address this issue. The feedback analysis shows that a large part of the spread of Arctic climate change is explained by the longwave feedback parameter. The large spread of the negative longwave feedback parameter is in turn mainly due to variations in temperature feedback. The vertical temperature structure of the atmosphere in the Arctic, characterized by a surface inversion during wintertime, exerts a strong control on the temperature feedback and consequently on simulated Arctic climate change. Most current climate models likely overestimate the climatological strength of the inversion, leading to excessive negative longwave feedback. The authors conclude that the models\&\#8217; near-equilibrium response to anthropogenic forcing is generally too small.}, author = {Bo\&\#233;, Julien and Hall, Alex and Qu, Xin}, citeulike-article-id = {5687534}, citeulike-linkout-0 = {http://dx.doi.org/10.1175/2009JCLI2885.1}, day = {1}, doi = {10.1175/2009JCLI2885.1}, journal = {Journal of Climate}, keywords = {arctic, atmosphere, bias, circulation, climate, climate-sensitivity, feedback, gcm, model, polar, polar-amplification}, month = {September}, number = {17}, pages = {4682--4695}, posted-at = {2009-09-15 19:13:05}, priority = {2}, title = {Current GCMs\&\#8217; Unrealistic Negative Feedback in the Arctic}, url = {http://dx.doi.org/10.1175/2009JCLI2885.1}, volume = {22}, year = {2009} }

TY - JOUR ID - citeulike:5687534 L3 - citeulike-article-id:5687534 N2 - The large spread of the response to anthropogenic forcing simulated by state-of-the-art climate models in the Arctic is investigated. A feedback analysis framework specific to the Arctic is developed to address this issue. The feedback analysis shows that a large part of the spread of Arctic climate change is explained by the longwave feedback parameter. The large spread of the negative longwave feedback parameter is in turn mainly due to variations in temperature feedback. The vertical temperature structure of the atmosphere in the Arctic, characterized by a surface inversion during wintertime, exerts a strong control on the temperature feedback and consequently on simulated Arctic climate change. Most current climate models likely overestimate the climatological strength of the inversion, leading to excessive negative longwave feedback. The authors conclude that the models’ near-equilibrium response to anthropogenic forcing is generally too small. IS - 17 JF - Journal of Climate EP - 4695 TI - Current GCMs’ Unrealistic Negative Feedback in the Arctic VL - 22 SP - 4682 KW - arctic KW - atmosphere KW - bias KW - circulation KW - climate KW - climate-sensitivity KW - feedback KW - gcm KW - model KW - polar KW - polar-amplification AU - Boé, Julien AU - Hall, Alex AU - Qu, Xin PY - 2009/09/01/ UR - http://dx.doi.org/10.1175/2009JCLI2885.1 ER -