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1 to 10 of 12 Results
Assessing Planetary Complexity and Potential Agnostic Biosignatures using Epsilon Machines
Nov 23, 2021
Jonathan Jiang, 2021, "Assessing Planetary Complexity and Potential Agnostic Biosignatures using Epsilon Machines", https://doi.org/10.48577/jpl.XMNTOI, Nature Astronomy, JPL Open Repository
We present a new approach to exoplanet characterization using tech-niques from complexity science, with potential applications to biosig-nature detection. This agnostic method makes use of the temporalvariability of light reected or emitted from a planet. We use a tech-nique know...
Rotation Period Detection for Earth-like Exoplanets
Nov 8, 2021
Jonathan Jiang, 2021, "Rotation Period Detection for Earth-like Exoplanets", https://doi.org/10.48577/jpl.STWVJY, The Astrophysical Journal, JPL Open Repository
A terrestrial planet’s rotation period is one of the key parameters that determines its climate and habitability. Current methods for detecting the rotation period of exoplanets are not suitable for terrestrial exoplanets. Here we demonstrate that, under certain conditions, the r...
Inferring Planetary Complexity using Epsilon Machines: A Novel Approach to Agnostic Biosignatures
Sep 8, 2021
Vijay Natraj, 2021, "Inferring Planetary Complexity using Epsilon Machines: A Novel Approach to Agnostic Biosignatures", https://doi.org/10.48577/jpl.GHAY3R, Nature Astronomy, JPL Open Repository
We present a new approach to exoplanet assessment using techniques from complexity science. The majority of life detection schemes rely upon biochemical signatures and planetary context. However, it is increasingly recognized that extraterrestrial life could be very different to...
From COVID-19 to Future Electrification: Assessing Traffic Impacts on Air Quality by a Machine Learning Model
Jun 2, 2021
Jonathan Jiang, 2021, "From COVID-19 to Future Electrification: Assessing Traffic Impacts on Air Quality by a Machine Learning Model", https://doi.org/10.48577/jpl.YITKRQ, Science, JPL Open Repository
The large fluctuations in traffic during the COVID-19 pandemic provide an unparalleled opportunity to assess emission control efficacy. Here we develop a machine-learning (ML) model, based on the large volume of real-time observational data, to predict surface-level NO2, O3, and...
Earth as a Proxy Exoplanet: Deconstructing and Reconstructing Spectrophotometric Light Curves
Apr 15, 2021
Vijay Natraj, 2021, "Earth as a Proxy Exoplanet: Deconstructing and Reconstructing Spectrophotometric Light Curves", https://doi.org/10.48577/jpl.PN0X8L, The Astrophysical Journal, JPL Open Repository
Point source, spectrophotometric light curves of Earth-like planets contain a surprising amount of information about the spatial features of those worlds. Spatially resolving these light curves is critical for assessing time-varying surface features and the existence of a climate...
A Statistical Estimation of the Occurrence of Extraterrestrial Intelligence in the Milky Way Galaxy
Jan 11, 2021
Jonathan Jiang, 2021, "A Statistical Estimation of the Occurrence of Extraterrestrial Intelligence in the Milky Way Galaxy", https://doi.org/10.48577/jpl.QQPN7W, Galaxies, JPL Open Repository
In the field of Astrobiology, the precise location, prevalence and age of potential extraterrestrial intelligence (ETI) have not been explicitly explored. Here, we address these inquiries using an empirical galactic simulation model to analyze the spatial-temporal variations and...
Reduced European aerosol emissions suppress winter extremes over northern Eurasia
Apr 23, 2020
Jonathan Jiang, 2020, "Reduced European aerosol emissions suppress winter extremes over northern Eurasia", https://doi.org/10.48577/jpl.3ELQSG, Nature Climate Change, JPL Open Repository
Winter extreme weather events receive major public attention due to their serious impacts[1], but the dominant factors regulating their interdecadal trends have not been clearly established[2,3]. Here we show that the radiative forcing due to geospatially redistributed anthropoge...
Impact of Cloud Ice Particle Size Uncertainty in A Climate Model and Implications for Future Satellite Missions
Apr 3, 2020
Wang, Yuan, 2020, "Impact of Cloud Ice Particle Size Uncertainty in A Climate Model and Implications for Future Satellite Missions", https://doi.org/10.48577/jpl.D8X7VT, JGR-Atmosphere, JPL Open Repository
Ice particle size is pivotal to determining ice cloud radiative effect and precipitating rate. However, there is a lack of accurate ice particle effective radius (Rei) observation on the global scale to constrain its representation in climate models. In support of future mission...
Impacts of Saharan Dust on Atlantic Regional Climate and Implications for Tropical Cyclones
Jun 25, 2018
Jonathan Jiang, 2018, "Impacts of Saharan Dust on Atlantic Regional Climate and Implications for Tropical Cyclones", https://doi.org/10.48577/jpl.INQACK, Journal of Climate, JPL Open Repository
No abstract available.
Using Deep Space Climate Observatory Measurements to Study the Earth as An Exoplanet
Jun 4, 2018
Jonathan Jiang, 2018, "Using Deep Space Climate Observatory Measurements to Study the Earth as An Exoplanet", https://doi.org/10.48577/jpl.LTFPE6, Nature, JPL Open Repository
No abstract available.
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