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41 to 50 of 2,866 Results
Interpreting the seasonality of atmospheric methaneEmbargoed
Apr 12, 2024
Anthony Bloom, 2024, "Interpreting the seasonality of atmospheric methane", https://doi.org/10.48577/jpl.NQPWKI, Geophysical Research Letters, JPL Open Repository
Surface and satellite observations of atmospheric methane show smooth seasonal behavior in the Southern Hemisphere driven by loss from the hydroxyl (OH) radical. However, observations in the Northern Hemisphere show a sharp mid-summer increase that is asymmetric with the Southern...
Antecedent Conditions Mitigate Carbon Loss During Flash Drought EventsEmbargoed
Apr 12, 2024
Nicholas Parazoo, 2024, "Antecedent Conditions Mitigate Carbon Loss During Flash Drought Events", https://doi.org/10.48577/jpl.FNXCXH, Geophysical Research Letters, JPL Open Repository
Flash droughts– the rapid drying of land and intensification of drought conditions - have devasting impacts to natural resources, food supplies, and the economy. Less is currently known about the drivers of flash droughts and their impact to landscape carbon losses. We leverage c...
A Cavity in the Compact Disk of the Forming Companion GQ Lup B Revealed by JWST/MIRIEmbargoed
Apr 12, 2024
Klaus Pontoppidan, 2024, "A Cavity in the Compact Disk of the Forming Companion GQ Lup B Revealed by JWST/MIRI", https://doi.org/10.48577/jpl.BCQOB4, The Astrophyscial Journal, JPL Open Repository
GQ Lup B is a forming brown dwarf companion ($M\sim10-30~\MJ$) showing evidence for an infrared excess associated with a disk surronding the companion itself. Here we present mid-infrared (MIR) observations of GQ~Lup~B with the Medium Resolution Spectrograph (MRS) on JWST, spanni...
Unlocking the Potential of Graph Signal Processing: Enhancing SMAP Soil Moisture Estimates with SMAP-Reflectometer DataEmbargoed
Apr 12, 2024
Nereida Rodriguez Alvarez, 2024, "Unlocking the Potential of Graph Signal Processing: Enhancing SMAP Soil Moisture Estimates with SMAP-Reflectometer Data", https://doi.org/10.48577/jpl.SKTRVC, Remote Sensing, JPL Open Repository
The Soil Moisture Active Passive (SMAP) mission has greatly contributed to the use of remote sensing technologies for observing the Earth’s land surface and estimating geophysical parame-ters that influence the climate system. Since the SMAP mission switched its radar receiver to...
Pre-impact albedo map and photometric properties of the (65803) Didymos asteroid binary system from DART and ground-based dataEmbargoed
Apr 11, 2024
Bonnie Buratti, 2024, "Pre-impact albedo map and photometric properties of the (65803) Didymos asteroid binary system from DART and ground-based data", https://doi.org/10.48577/jpl.KVMNJB, Planetary Science Journal, JPL Open Repository
This study provides a pre-impact map of the albedo of the Double Asteroid Redirection Test (DART) target Dimorphos corrected for all the effects of viewing geometry, as well as an estimate of photometric roughness for the hemisphere imaged by DART. Other photometric properties ar...
Rocks with extremely low thermal inertia at the OSIRIS-REx sample site on asteroid BennuEmbargoed
Apr 11, 2024
Catherine Elder, 2024, "Rocks with extremely low thermal inertia at the OSIRIS-REx sample site on asteroid Bennu", https://doi.org/10.48577/jpl.DOLOBK, Planetary Science Journal, JPL Open Repository
The OSIRIS-REx mission recently returned a sample of rocks and dust collected from asteroid Bennu. We analyzed the highest-resolution thermal data obtained by the OSIRIS-REx Thermal Emission Spectrometer (OTES) to gain insight into the thermal and physical properties of the sampl...
VaTEST III: Validation of 8 Potential Super-Earths from TESS DataEmbargoed
Apr 10, 2024
Catherine Clark, 2024, "VaTEST III: Validation of 8 Potential Super-Earths from TESS Data", https://doi.org/10.48577/jpl.HN8VQZ, Proceedings of the International Astronomical Union, JPL Open Repository
NASA’s all-sky survey mission, the Transiting Exoplanet Survey Satellite (TESS), is specifically engineered to detect exoplanets that transit bright stars. Thus far, TESS has successfully identified approximately 400 transiting exoplanets, in addition to roughly 6000 candidate ex...
Keck Primary Mirror Closed-Loop Segment Control using a Vector-Zernike Wavefront SensorEmbargoed
Apr 10, 2024
James Wallace, 2024, "Keck Primary Mirror Closed-Loop Segment Control using a Vector-Zernike Wavefront Sensor", https://doi.org/10.48577/jpl.C5BJFP, The Astrophysical Journal Letters, JPL Open Repository
We present the first on-sky segmented primary mirror closed-loop piston control using a Zernike wavefront sensor (ZWFS) installed on the Keck II telescope. Segment co-phasing errors are a primary contributor to contrast limits on Keck and will be necessary to correct for the next...
Constraints on atmospheric water abundance and cloud deck pressure in the warm Neptune GJ 3470 b via CARMENES transmission spectroscopyEmbargoed
Apr 9, 2024
Aaron Bello Arufe, 2024, "Constraints on atmospheric water abundance and cloud deck pressure in the warm Neptune GJ 3470 b via CARMENES transmission spectroscopy", https://doi.org/10.48577/jpl.OPBETF, MNRAS, JPL Open Repository
Observations of cooler atmospheres of super-Earths and Neptune sized objects often show ŕat transmission spectra. The most likely cause of this trend is the presence of aerosols (i.e. clouds and hazes) in the atmospheres of such objects. Highresolution spectroscopy provides an op...
The BLAST Observatory: Sensitivity Study for Far-IR PolarimetersEmbargoed
Apr 9, 2024
Brandon Hensley, 2024, "The BLAST Observatory: Sensitivity Study for Far-IR Polarimeters", https://doi.org/10.48577/jpl.YX4FXH, Publications of the Astronomical Society of the Pacific, JPL Open Repository
Sensitive wide-field observations of polarized thermal emission from interstellar dust grains will allow astronomers to address key outstanding questions about the life cycle of matter and energy driving the formation of stars and the evolution of galaxies. Stratospheric balloon-...
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