Feng Ding's research while affiliated with Peking University and other places
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Publications (9)
The hydrologic cycle has wide impacts on the ocean salinity and circulation, carbon and nitrogen cycles, and the ecosystem. Under anthropogenic global warming, previous studies showed that the intensification of the hydrologic cycle is a robust feature. Whether this trend persists in hothouse climates, however, is unknown. Here, we show in climate...
Determining the behaviour of convection and clouds is one of the biggest challenges in our understanding of exoplanetary climates. Given the lack of in situ observations, one of the most preferable approaches is to use cloud-resolving or cloud-permitting models (CPM). Here we present CPM simulations in a quasi-global domain with high spatial resolu...
Determining the behaviour of convection and clouds is one of the biggest challenges in our understanding of exoplanetary climates. Given the lack of in situ observations, one of the most preferable approaches is to use cloud-resolving or cloud-permitting models (CPM). Here we present CPM simulations in a quasi-global domain with high spatial resolu...
Ongoing and future space missions aim to identify potentially habitable planets in our Solar System and beyond. Planetary habitability is determined not only by a planet’s current stellar insolation and atmospheric properties, but also by the evolutionary history of its climate. It has been suggested that icy planets and moons become habitable afte...
Identifying possibly habitable planets beyond our solar system is one of the most intriguing scientific targets for ongoing and future space missions. The habitability of a planet is determined not only by its current stellar insolation and atmospheric properties, but also by its evolution history. Previous studies[1,2] suggested that when host sta...
An accurate estimate of the inner edge of the habitable zone is critical for determining which exoplanets are potentially habitable and for designing future telescopes to observe them. Here, we explore differences in estimating the inner edge among seven one-dimensional radiative transfer models: two line-by-line codes (SMART and LBLRTM) as well as...
Most previous studies on how obliquity affects planetary habitability focused on planets around Sun-like stars. Their conclusions may not be applicable to habitable planets around M dwarfs due to the tidal-locking feature and associated insolation pattern of these planets. Here we use a comprehensive three-dimensional atmospheric general circulatio...
Aims. The M-type star Gliese 581 is likely to have two super-Earth planets, i.e., Gl 581c and Gl 581d. The present study is to investigate their habitability constrained by radiative properties of their atmospheres and the threshold of carbon-dioxide (CO 2), assuming that the two exoplanets are terrestrial, and that they have similar outgassing pro...
One of the critical issues of the Snowball Earth hypothesis is the CO2 threshold for triggering the deglaciation. Using Community Atmospheric Model version 3.0 (CAM3), we study the problem for the CO2 threshold. Our simulations show large differences from previous results (e.g. Pierrehumbert, 2004, 2005; Le Hir et al., 2007). At 0.2 bars of CO2, th...
Citations
... However, previous studies of white dwarf systems were based on idealized energy-balance models or 1D radiativeconvective atmospheric models, and so did not account for atmospheric dynamics. The gold standard for habitability calculations are 3D Global Climate Models (GCMs), which self-consistently resolve the interaction between atmospheric dynamics, radiation, clouds, and ocean dynamics (Yang et al. 2013;Wolf & Toon 2014;Hu & Yang 2014;Kopparapu et al. 2016;Noda et al. 2017;Fujii et al. 2017;Komacek & Abbot 2019;Del Genio et al. 2019;Turbet et al. 2021;Yang et al. 2023). Habitable zone calculations of M dwarfs show that GCMs tend to predict significantly wider habitable zones than 1D models, which considerably increases the inferred frequency of habitable planets around main sequence stars (Yang et al. 2013;Wolf & Toon 2014;Kopparapu et al. 2016;Noda et al. 2017;Fujii et al. 2017;Komacek & Abbot 2019;Turbet et al. 2021;Yang et al. 2023). ...
... For so-called "snowball worlds" with a frozen surface, the surface albedo is higher than if the surface were composed of an ocean (e.g., Goode et al. 2001). Yang et al. (2017) found using a 3D global circulation model (GCM) that to melt such a world may require a critical instellation which is too high for the world to remain habitable once the ice melts and the albedo decreases. ...
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... For the experiments in Section 2 (Exp 3 and 4), the radiation scheme is CAM (Collins et al., 2006) with an updating frequency of every 90 time steps, and each time step is 10 s. Although both RRTM and CAM are not accurate enough under high temperature (Collins et al., 2006;Yang et al., 2016), both are able to simulate episodic deluges (Dagan et al., 2023;Seeley & Wordsworth, 2021). The 2D time-height output statistics are hourly averages, and 3D output statistics are hourly snapshots. ...
![[object Object]](https://i1.rgstatic.net/ii/profile.image/339635214536705-1457986753108_Q64/Eric-Wolf.jpg)
... Williams & Kasting (1997) and Spiegel et al. (2009) used the same model to investigate the climate of a terrestrial planet at various obliquities. By using a 3D atmospheric general circulation model (GCM), Wang et al. (2016) studied the effect of obliquity on the habitability of planets around around M dwarf stars but with a lower-complexity thermodynamic 50 m slab ocean with zero horizontal heat transport. Additional studies have examined the relationship between obliquity and planetary climate (e.g., Ferreira et al. 2014;Kilic et al. 2017;Rose et al. 2017;Colose et al. 2019). ...
... Accumulating atmospheric CO 2 by volcanic activity during the glaciations can gradually warm the climate and eventually lead to deglaciation. The threshold of CO 2 concentration to trigger the deglaciation has been extensively investigated using different energy balance models and global general circulation models (GCMs) (e.g., Abbot et al., 2012Abbot et al., , 2013Caldeira & Kasting, 1992;Hu et al., 2011;Hyde et al., 2000;Pierrehumbert, 2004;Pierrehumbert et al., 2011;Tajika, 2003). However, the obtained CO 2 thresholds vary from 0.01 to 0.4 bar because of divergent treatments of several processes, for example, ice/snow albedo , cloud parameterization (Abbot, 2014;Abbot et al., 2012), surface dust or aerosols (Abbot & Halevy, 2010;de Vrese et al., 2021), atmospheric pressure (Edkins & Davies, 2021), melt ponds (Wu et al., 2020), and vertical resolution of sea ice model . ...
... More idealized approaches include the use of energy balance models (EBMs), which calculate temperature across a one-or two-dimensional surface based on the balance of incoming starlight and outgoing infrared radiation and their effect on surface albedo (e.g., Deitrick et al. 2018;Kadoya & Tajika 2019;Biasiotti et al. 2022;Haqq-Misra & Hayworth 2022;Ramirez 2024). Even simpler models include one-dimensional radiative convective equilibrium (RCE) models, which use a single vertical column to represent global planetary conditions (e.g., Kasting et al. 1993;Hu & Ding 2011;Kopparapu et al. 2013;Wordsworth et al. 2010;Windsor & Robinson 2021). This hierarchy of modeling approaches can provide the benefit of rapid exploration of parameter spaces with fast (but more idealized) models while also enabling more focused exploration of specific cases of interest with slow (but more comprehensive) models. ...
