JWST will provide moderate resolution transit spectra with continuous wavelength coverage from the optical to the mid-infrared for the first time. In this paper, we illustrate how different aerosol species, size-distributions, and spatial distributions encode information in JWST transit spectra. We use the transit spectral modeling code METIS, along with Mie theory and several flexible treatments of aerosol size and spatial distributions to perform parameter sensitivity studies, calculate transit contribution functions, compute Jacobians, and retrieve parameters with Markov Chain Monte Carlo. The broader wavelength coverage of JWST will likely encompass enough non-gray aerosol behavior to recover information about the species and size-distribution of particles, especially if distinct resonance features arising from the aerosols are present. Within the JWST wavelength range, the optical and mid-infrared typically provide information about 0.1-1 $μ$m sized aerosols, while the near-infrared to mid-infrared wavelengths usually provide information about gaseous absorption, even if aerosols are present. Strong gaseous absorption features in the infrared often remain visible, even when clouds and hazes are flattening the optical and NIR portion of the spectrum that is currently observable. For some combinations of aerosol properties, temperature, and surface gravity, one can make a precise measure of metallicity despite the presence of aerosols, but more often the retrieved metallicity of a cloudy or hazy atmosphere has significantly lower precision than for a clear atmosphere with otherwise similar properties. Future efforts to securely link aerosol properties to atmospheric metallicity and temperature in a physically motivated manner will ultimately enable a robust physical understanding of the processes at play in cloudy, hazy exoplanet atmospheres.
Cloudy mornings and clear evenings on a gas giant exoplanet
Johns Hopkins University（约翰斯·霍普金斯大学）；University of California, Santa Cruz（加州大学圣克鲁兹分校）；Johns Hopkins Applied Physics Laboratory（约翰斯·霍普金斯大学应用物理实验室）；University of Exeter（埃克塞特大学）；University of Oxford（牛津大学）；Max Planck Institute for Astronomy（马克斯·普朗克天文学研究所）
How Does Thermal Scattering Shape the Infrared Spectra of Cloudy Exoplanets? A Theoretical Framework and Consequences for Atmospheric Retrievals in the JWST era
Inspecting Cloudy Substellar Atmospheres with JWST MIRI Synthetic Magnitudes from Spitzer Mid-infrared Spectra
Department of Physics, Graduate Center, City University of New York（纽约市立大学研究生中心物理系）；Department of Astronomy, Columbia University（哥伦比亚大学天文学系）；Department of Astrophysics, American Museum of Natural History（美国自然历史博物馆天体物理学系）；School of Physics, Trinity College Dublin, The University of Dublin（都柏林三一学院物理学院，都柏林大学）；Department of Physics and Astronomy, Western University（韦仕敦大学物理与天文系）；Institute for Earth and Space Exploration, Western University（韦仕敦大学地球与太空探索研究所）；Department of Physics and Astronomy, Hunter College, City University of New York（纽约市立大学亨特学院物理与天文系）
Asymmetric Aerosol Distribution on the Terminators of the Warm Saturn WASP-69 b Revealed by JWST NIRISS/SOSS
Princeton University（普林斯顿大学）；Johns Hopkins University（约翰斯·霍普金斯大学）；Arizona State University（亚利桑那州立大学）；Johns Hopkins University Applied Physics Laboratory（约翰斯·霍普金斯大学应用物理实验室）；University of Oxford（牛津大学）；University of Exeter（埃克塞特大学）
Pre-computed aerosol extinction, scattering and asymmetry grids for scalable atmospheric retrievals
Université Paris Cité, Université Paris-Saclay, CEA, CNRS, AIM（巴黎西岱大学、巴黎萨克雷大学、法国原子能和替代能源委员会、法国国家科学研究中心、天体物理学和分子光谱学研究所）；Kapteyn Institute, University of Groningen（卡普坦研究所、格罗宁根大学）
Cloudy with a chance of metals: Indications of CO$_2$ in the atmosphere of GJ 1214 b from high-resolution K-band spectroscopy
Georg-August-Universität（哥廷根大学）；Ludwig-Maximilians-Universität München（慕尼黑大学）；Leibniz Institute for Astrophysics Potsdam（波茨坦莱布尼茨天体物理研究所）；Uppsala University（乌普萨拉大学）；Pontificia Universidad Católica de Chile（智利天主教 Pontificia 大学）；Institut de Recherche en Astrophysique et Planétologie, Université de Toulouse, CNRS（图卢兹大学、法国国家科学研究中心天体物理学与行星学研究所在）
Tsinghua University（清华大学）；SRON Netherlands Institute for Space Research（荷兰空间研究所）；Space Telescope Science Institute（太空望远镜科学研究所）；Kapteyn Astronomical Institute, University of Groningen（格罗宁根大学卡普坦天文研究所）；Leiden Observatory, Leiden University（莱顿大学莱顿天文台）
JWST COMPASS: NIRSpec/G395H Transmission Observations of the Sub-Neptune HD 15337 c
Carnegie Institution for Science（卡内基科学研究所）；California Institute of Technology（加州理工学院）；University of California, Santa Cruz（加州大学圣克鲁兹分校）；Space Telescope Science Institute（太空望远镜科学研究所）；Cornell University（康奈尔大学）；NASA Ames Research Center（美国国家航空航天局艾姆斯研究中心）
Cloudy solutions for the clear skies of WASP-80b: 3D cloud feedback on the atmosphere and spectra of a warm Jupiter
Université de la Côte d’Azur, Observatoire de la Côte d’Azur, CNRS, Laboratoire Lagrange（蔚蓝海岸大学，蔚蓝海岸天文台，法国国家科学研究中心，拉格朗日实验室）；Tsung-Dao Lee Institute & School of Physics and Astronomy, Shanghai Jiao Tong University（杨振宁研究所与物理与天文学院，上海交通大学）；Center for Space and Habitability, University of Bern（太空与宜居中心，伯尔尼大学）；Johns Hopkins Applied Physics Laboratory（约翰斯·霍普金斯大学应用物理实验室）；Space Telescope Science Institute（太空望远镜科学研究所）；Steward Observatory（斯图尔德天文台）；Department of Astronomy, University of Wisconsin–Madison（天文学系，威斯康星大学麦迪逊分校）；Department of Astronomy and Astrophysics, University of California at Santa Cruz（天文学与天体物理学系，加州大学圣克鲁兹分校）；Department of Physics and Astronomy, Johns Hopkins University（物理与天文学系，约翰斯·霍普金斯大学）；California Institute of Technology（加利福尼亚理工学院）
VLT/CRIRES+ observations of warm Neptune WASP-107 b: Challenges in detecting molecules with ground-based transmission spectroscopy of cooler and cloudy exoplanets
Uppsala University（乌普萨拉大学）；Pontificia Universidad Católica de Chile（智利天主教 Pontificia 大学）；Georg-August-Universität（格奥尔格-奥古斯特大学）；Leibniz Institute for Astrophysics Potsdam (AIP)（波茨坦阿诺德·爱因斯坦天体物理研究所 (AIP)）；Ludwig-Maximilians-Universität München（慕尼黑路德维希-马克西米利安大学）；Namzitu Astro（Namzitu 天文台）
Optical transmission spectrum of HAT-P-47b: evidence for aerosols and tentative TiO absorption
CAS Key Laboratory of Planetary Sciences, Purple Mountain Observatory, Chinese Academy of Sciences（中国科学院行星科学重点实验室，紫金山天文台，中国科学院）；School of Astronomy and Space Science, University of Science and Technology of China（中国科学技术大学天文与空间科学学院）；Department of Astronomy, University of Science and Technology of China（中国科学技术大学天文系）；Instituto de Astrofísica de Canarias (IAC)（加那利天体物理研究所）；Departamento de Astrofísica, Universidad de La Laguna (ULL)（拉帕尔马大学天体物理学系）；Department of Physics, University of Rome “Tor Vergata”（罗马托维塔大学物理系）；INAF – Turin Astrophysical Observatory（意大利国家天体物理研究所都灵天文台）
Hot and cloudy: High temperature clouds in super-Earths and sub-Neptunes
Leiden Observatory（莱顿天文台）；SRON Netherlands Institute for Space Research（荷兰空间研究所）；Tsinghua University（清华大学）；Jet Propulsion Laboratory, California Institute of Technology（加州理工学院喷气推进实验室）
Super-Solar Metallicity and Tentative Evidence for Photochemistry on WASP-96b from JWST and Ground-Based VLT Transmission Spectroscopy
University of Chicago（芝加哥大学）；Institut Trottier de Recherche sur les Exoplanètes（特鲁蒂尔系外行星研究所）；University of Oxford（牛津大学）；Arizona State University（亚利桑那州立大学）；New York University Abu Dhabi（阿布扎比纽约大学）；Max Planck Institute for Astronomy（马克斯·普朗克天文学研究所）；Planétarium de Montréal, Espace pour la Vie（蒙特利尔天文馆，生命空间）
A Next-Generation Exoplanet Atmospheric Retrieval Framework NEXOTRANS for Emission Spectroscopy: New Constraints and Atmospheric Characterization of WASP-69b Using JWST NIRCam and MIRI Observations
Exoplanet climate characterization with transit asymmetries -- A comprehensive population study from the optical to the infrared
Space Research Institute, Austrian Academy of Sciences（奥地利科学院空间研究所）；Institute for Theoretical Physics and Computational Physics, Graz University of Technology（格拉茨工业大学理论与计算物理研究所）
