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Photoelectrochemical impedance spectroscopy (PEIS) is a useful tool for the characterization of photoelectrodes for solar water splitting. However, the analysis of PEIS spectra often involves a priori assumptions that might bias the…

化学物理 · 物理学 2020-12-10 Dino Klotz , Daniel A. Grave , Hen Dotan , Avner Rothschild

We propose a new method to retrieve the optical depth of Martian aerosols (AOD) from OMEGA and CRISM hyperspectral imagery at a reference wavelength of 1 {\mu}m. Our method works even if the underlying surface is completely made of…

地球与行星天体物理 · 物理学 2015-06-12 S. Douté , X. Ceamanos , T. Appéré

To expedite space exploration on Mars, it is indispensable to develop an efficient Martian image compression method for transmitting images through the constrained Mars-to-Earth communication channel. Although the existing learned…

计算机视觉与模式识别 · 计算机科学 2026-01-27 Qing Ding , Mai Xu , Shengxi Li , Xin Deng , Xin Zou

Dust is the main driver of Mars' atmospheric variability. The determination of Martian dust aerosol properties is of high relevance for radiative modelling and calculating its weather forcing. In particular, the light scattering behaviour…

地球与行星天体物理 · 物理学 2019-05-06 H. Chen-Chen , S. Perez-Hoyos , A. Sanchez-Lavega

Aims. We aim to determine far-infrared fluxes at 70, 100, and 160$\mu$m of the five major Uranus satellites Titania, Oberon, Umbriel, Ariel and Miranda, based on observations with the photometer PACS-P aboard the Herschel Space Observatory.…

地球与行星天体物理 · 物理学 2020-09-16 Ö. H. Detre , T. G. Müller , U. Klaas , G. Marton , H. Linz , Z. Balog

Mars' wet-to-dry transition is a major environmental catastrophe, yet the spatial pattern, tempo, and cause of drying are poorly constrained. We built a globally-distributed database of constraints on Mars late-stage paleolake size relative…

地球与行星天体物理 · 物理学 2023-01-11 Edwin S. Kite , Axel Noblet

This short article presents an alternative view of high resolution imaging from various sources with the aim of the discovery of potential sites of archaeological importance, or sites that exhibit `anomalies' such that they may merit closer…

计算机视觉与模式识别 · 计算机科学 2007-05-23 Vassilios S. Vassiliadis

We present observations of seven transits and seven eclipses of the transiting planet system HD 189733 taken with Spitzer IRAC at 8 microns. We use a new correction for the detector ramp variation with a double-exponential function. Our…

地球与行星天体物理 · 物理学 2014-11-21 E. Agol , N. B. Cowan , H. A. Knutson , D. Deming , J. H. Steffen , G. W. Henry , D. Charbonneau

The climate of Mars likely evolved from a warmer, wetter early state to the cold, arid current state. However, no solutions for this evolution have previously been found to satisfy the observed geological features and isotopic measurements…

地球与行星天体物理 · 物理学 2015-12-03 Renyu Hu , David M. Kass , Bethany L. Ehlmann , Yuk L. Yung

We introduce a new library of 535,194 model images of the supermassive black holes and Event Horizon Telescope (EHT) targets Sgr A* and M87*, computed by performing general relativistic radiative transfer calculations on general…

高能天体物理现象 · 物理学 2023-02-22 Richard Qiu , Angelo Ricarte , Ramesh Narayan , George N. Wong , Andrew Chael , Daniel Palumbo

Ice thickness is an important variable for climate scientists and is still difficult to accurately determine from microwave radiometer measurements. There has been some success detecting the thickness of thin ice and with this in mind this…

大气与海洋物理 · 物理学 2012-08-13 Peter Mills

On the basis of geological evidence, it is often stated that the early martian climate was warm enough for liquid water to flow on the surface thanks to the greenhouse effect of a thick atmosphere. We present 3D global climate simulations…

The dynamics of Mars' obliquity are believed to be chaotic, and the historical ~3.5 Gyr (late-Hesperian onward) obliquity probability density function (PDF) is high uncertain and cannot be inferred from direct simulation alone. Obliquity is…

地球与行星天体物理 · 物理学 2019-04-19 Samuel J. Holo , Edwin S. Kite , Stuart J. Robbins

Ground-penetrating radar on planes and satellites now makes it practical to collect 3D observations of the subsurface structure of the polar ice sheets, providing crucial data for understanding and tracking global climate change. But…

计算机视觉与模式识别 · 计算机科学 2017-12-22 Mingze Xu , David J Crandall , Geoffrey C Fox , John D Paden

The Mars Orbiter Laser Altimeter (MOLA) on board Mars Global Surveyor (MGS) made $> 10^{8}$ measurements of the reflectivity of Mars at 1064 nm ($R_{1064}$) by both active sounding and passive radiometry. Past studies of $R_{1064}$…

地球与行星天体物理 · 物理学 2017-03-08 Nicholas G. Heavens

Inferring the climate and surface conditions of terrestrial exoplanets in the habitable zone is a major goal for the field of exoplanet science. This pursuit will require both statistical analyses of the population of habitable planets as…

地球与行星天体物理 · 物理学 2022-03-30 Adiv Paradise , Kristen Menou , Christopher Lee , Bo Lin Fan

Stereo images captured by Mars rovers are transmitted after lossy compression due to the limited bandwidth between Mars and Earth. Unfortunately, this process results in undesirable compression artifacts. In this paper, we present a novel…

图像与视频处理 · 电气工程与系统科学 2024-12-31 Mai Xu , Yinglin Zhu , Qunliang Xing , Jing Yang , Xin Zou

Exposed scarps images and ice-penetrating radar measurements in the North Polar Layered Deposits (NPLD) of Mars show alternating layers that provide an archive of past climate oscillations, that are thought to be linked to orbital…

地球与行星天体物理 · 物理学 2022-03-22 E. Vos , O. Aharonson , N. Schorghofer , F. Forget , E. Millour , L. Rossi M. Vals , F. Montmessin

We have obtained the first continuous disk averaged spectrum of Mars from 450 to 1550 Ghz using the Herschel-SPIRE Fourier Transform Spectrometer. The spectrum was obtained at a constant resolution of 1.4 GHz across the whole band. The flux…

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