Search Results - "UNITED States. National Aeronautics & Space Administration"

1

Academic Journal

Effect of different axial deflected angles of reversed blade-angle slots on the axial flow compressor performance and stability.

Authors: Zhang, Haoguang¹ (AUTHOR), Zhong, Xinyi¹ (AUTHOR) zhongxinyi@mail.nwpu.edu.cn, Wang, Enhao² (AUTHOR), Zhang, Chiyuan¹ (AUTHOR), Chu, Wuli¹ (AUTHOR)

Source: Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power & Energy (Sage Publications, Ltd.). Sep2023, Vol. 237 Issue 6, p1158-1169. 12p.

Subject Terms: Axial flow compressors, Compressor performance, Transonic aerodynamics, Unsteady flow, Absolute value, Angles

Company/Entity: United States. National Aeronautics & Space Administration

2

Academic Journal

Systematic Validation of Ensemble Cloud‐Process Simulations Using Polarimetric Radar Observations and Simulator Over the NASA Wallops Flight Facility.

Authors: Matsui, Toshi^1,2 (AUTHOR) Toshihisa.Matsui-1@nasa.gov, Wolff, David B.³ (AUTHOR), Lang, Stephen^2,4 (AUTHOR), Mohr, Karen² (AUTHOR), Zhang, Minghua⁵ (AUTHOR), Xie, Shaocheng⁶ (AUTHOR), Tang, Shuaiqi⁷ (AUTHOR), Saleeby, Stephen M.⁸ (AUTHOR), Posselt, Derek J.⁹ (AUTHOR), Braun, Scott A.² (AUTHOR), Chern, Jiun‐Dar^1,2 (AUTHOR), Dolan, Brenda⁸ (AUTHOR), Pippitt, Jason L.^3,4 (AUTHOR), Loftus, Adrian M.² (AUTHOR)

Source: Journal of Geophysical Research. Atmospheres. 8/28/2023, Vol. 128 Issue 16, p1-29. 29p.

Subject Terms: *Rainfall, Large eddy simulation models, Radar, Radar meteorology, Microphysics, Hail, Aeronautical instruments

Company/Entity: United States. National Aeronautics & Space Administration

3

Academic Journal

Evaluating and Improving TROPICS Millimeter‐Wave Sounder's Precipitation Estimate Over Ocean.

Authors: You, Yalei^1,2 (AUTHOR) youy@uncw.edu, Huffman, George³ (AUTHOR), Kidd, Chris^3,4 (AUTHOR), Braun, Scott³ (AUTHOR), Blackwell, William⁵ (AUTHOR), Yang, John Xun⁴ (AUTHOR), Da, Cheng⁴ (AUTHOR)

Source: Journal of Geophysical Research. Atmospheres. 8/28/2023, Vol. 128 Issue 16, p1-11. 11p.

Subject Terms: *Ocean, *Storms, *Radiometers, Microwave radiometers, Microspacecraft, Precipitation gauges, Ocean color

Company/Entity: Massachusetts Institute of Technology , United States. National Aeronautics & Space Administration

4

Academic Journal

Global Gridded Aerosol Models Established for Atmospheric Correction Over Inland and Nearshore Coastal Waters.

Authors: Zhao, Dan¹ (AUTHOR), Feng, Lian¹ (AUTHOR) fengl@sustech.edu.cn, He, Xianqiang² (AUTHOR)

Source: Journal of Geophysical Research. Atmospheres. 8/28/2023, Vol. 128 Issue 16, p1-20. 20p.

Subject Terms: *Albedo, *Aerosols, *Bodies of water, *Atmospheric aerosols, Ocean color, Atmospheric models, Territorial waters

Company/Entity: United States. National Aeronautics & Space Administration

5

Academic Journal

Development of empirical solar radiation models with genetic algorithm and extended validation procedure.

Authors: Shakirov, Vladislav¹ (AUTHOR) shakirov@isem.irk.ru, Ivanova, Irina¹ (AUTHOR), Tuguzova, Tatyana¹ (AUTHOR)

Source: International Journal of Green Energy. 2023, Vol. 20 Issue 10, p1101-1118. 18p.

Subject Terms: *Solar radiation, *Global radiation, Genetic algorithms, Background radiation, Databases

Company/Entity: United States. National Aeronautics & Space Administration

6

Academic Journal

Interactive Stratospheric Aerosol Microphysics‐Chemistry Simulations of the 1991 Pinatubo Volcanic Aerosols With Newly Coupled Sectional Aerosol and Stratosphere‐Troposphere Chemistry Modules in the NASA GEOS Chemistry‐Climate Model (CCM)

Authors: Case, Parker^1,2,3 (AUTHOR) parker.case@colorado.edu, Colarco, Peter R.² (AUTHOR), Toon, Brian^1,4 (AUTHOR), Aquila, Valentina⁵ (AUTHOR), Keller, Christoph A.^6,7,8 (AUTHOR)

Source: Journal of Advances in Modeling Earth Systems. Aug2023, Vol. 15 Issue 8, p1-15. 15p.

Subject Terms: *Aerosols, Stratospheric aerosols, Stratospheric chemistry, Sulfate aerosols, Tropospheric aerosols, Volcanic plumes, Tropospheric chemistry

Geographic Terms: Chile

Company/Entity: United States. National Aeronautics & Space Administration

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7

Academic Journal

Ion Energization by Turbulent Electric Fields in Fast Earthward Flows and Its Implications for the Dynamics of the Inner Magnetosphere.

Authors: Usanova, M. E.¹ (AUTHOR) maria.usanova@lasp.colorado.edu, Ergun, R. E.^1,2 (AUTHOR), Stawarz, J. E.³ (AUTHOR)

Source: Journal of Geophysical Research. Space Physics. Aug2023, Vol. 128 Issue 8, p1-14. 14p.

Subject Terms: Electric fields, Magnetosphere, Ion energy, Particle acceleration, Energy dissipation, Plasma waves, Plasma turbulence

Company/Entity: United States. National Aeronautics & Space Administration

8

Academic Journal

Whistler‐Mode Waves in Magnetic Ducts.

Authors: Streltsov, Anatoly V.¹ (AUTHOR) streltsa@erau.edu, Nejad, Salman A.¹ (AUTHOR)

Source: Journal of Geophysical Research. Space Physics. Aug2023, Vol. 128 Issue 8, p1-13. 13p.

Subject Terms: Magnetic fields, Magnetic traps

Company/Entity: United States. National Aeronautics & Space Administration

9

Academic Journal

Investigating Whistler‐Mode Wave Intensity Along Field Lines Using Electron Precipitation Measurements.

Authors: Tsai, Ethan¹ (AUTHOR) ethantsai@ucla.edu, Artemyev, Anton^1,2 (AUTHOR), Angelopoulos, Vassilis¹ (AUTHOR), Zhang, Xiao‐Jia^1,3 (AUTHOR)

Source: Journal of Geophysical Research. Space Physics. Aug2023, Vol. 128 Issue 8, p1-17. 17p.

Subject Terms: *Ocean wave power, Cyclotron resonance, Relativistic electrons, Electrons, Radiation belts, Electron density, Electron scattering, Latitude

Company/Entity: University of California, Los Angeles , United States. National Aeronautics & Space Administration

10

Academic Journal

Turbulence, Particle Acceleration, and Heating Due To the Lower Hybrid Mode Near Magnetic Reconnection Regions in Magnetopause.

Authors: Upadhyay, Manoj K.¹ (AUTHOR) manojupadhyay37@gmail.com, Uma, R.¹ (AUTHOR), Sharma, R. P.¹ (AUTHOR)

Source: Journal of Geophysical Research. Space Physics. Aug2023, Vol. 128 Issue 8, p1-16. 16p.

Subject Terms: Particle acceleration, Magnetic reconnection, Magnetopause, Plasma turbulence, Turbulence, Current sheets, Galaxy formation

Company/Entity: United States. National Aeronautics & Space Administration

11

Academic Journal

Description of Martian Convective Vortices Observed by InSight and Implications for Vertical Vortex Structure and Subsurface Physical Properties.

Authors: Onodera, Keisuke¹ (AUTHOR) onodera@eri.u-tokyo.ac.jp, Nishida, Kiwamu¹ (AUTHOR), Kawamura, Taichi² (AUTHOR), Murdoch, Naomi³ (AUTHOR), Drilleau, Mélanie³ (AUTHOR), Otsuka, Ryoji^4,5 (AUTHOR), Lorenz, Ralph⁶ (AUTHOR), Horleston, Anna⁷ (AUTHOR), Widmer‐Schnidrig, Rudolf⁸ (AUTHOR), Schimmel, Martin⁹ (AUTHOR), Rodriguez, Sebastien² (AUTHOR), Carrasco, Sebastián¹⁰ (AUTHOR), Tanaka, Satoshi^4,5 (AUTHOR), Perrin, Clement¹¹ (AUTHOR), Lognonné, Philippe² (AUTHOR), Spiga, Aymeric¹² (AUTHOR), Banfield, Don¹³ (AUTHOR), Panning, Mark¹⁴ (AUTHOR), Banerdt, William Bruce¹⁴ (AUTHOR)

Source: Journal of Geophysical Research. Planets. Aug2023, Vol. 128 Issue 8, p1-25. 25p.

Subject Terms: *Atmospheric temperature, Pressure drop (Fluid dynamics), Polar vortex, Lift (Aerodynamics), Elastic deformation, Wind speed

Company/Entity: United States. National Aeronautics & Space Administration

12

Academic Journal

Near Infrared Spectral Radiance at Multiple Wavelengths From Io's Volcanoes 1: The Low Spatial Resolution Night‐Time Galileo NIMS Data Set.

Authors: Davies, Ashley Gerard¹ (AUTHOR) Ashley.Davies@jpl.nasa.gov, Veeder, Glenn J.² (AUTHOR)

Source: Journal of Geophysical Research. Planets. Aug2023, Vol. 128 Issue 8, p1-52. 52p.

Subject Terms: *Volcanoes, *Volcanic eruptions, Spatial resolution, Radiance, Tidal forces (Mechanics), IR spectrometers, Geologic hot spots, Quantum dots

Company/Entity: United States. National Aeronautics & Space Administration

People: Galilei, Galileo, 1564-1642

13

Academic Journal

Mars Global Surveyor's Mars Orbiter Camera (MOC) Wide‐Angle Images (1999–2006): 2. Data Investigation Into North Polar Hood Formation, Broad Brightness Changes in Acidalia, and Seasonal Frost in Hellas.

Authors: Robbins, Stuart J.¹ (AUTHOR) stuart@boulder.swri.edu

Source: Journal of Geophysical Research. Planets. Aug2023, Vol. 128 Issue 8, p1-11. 11p.

Subject Terms: *Dust storms, *Atmospheric deposition, Martian surface, Mars (Planet), Frost, Seasons, Polar vortex

Geographic Terms: Greece

Company/Entity: United States. National Aeronautics & Space Administration

14

Academic Journal

A Comparison of Stratospheric Gravity Waves in a High‐Resolution General Circulation Model With 3‐D Satellite Observations.

Authors: Okui, H.¹ (AUTHOR) okui@eps.s.u-tokyo.ac.jp, Wright, C. J.² (AUTHOR), Hindley, N. P.² (AUTHOR), Lear, E. J.² (AUTHOR), Sato, K.¹ (AUTHOR)

Source: Journal of Geophysical Research. Atmospheres. 7/16/2023, Vol. 128 Issue 13, p1-17. 17p.

Subject Terms: *General circulation model, *Middle atmosphere, *Ozone layer, Gravity waves, Atmospheric temperature measurements, Atmospheric waves

Company/Entity: United States. National Aeronautics & Space Administration

15

Academic Journal

Effects of Spatial Resolution, Mapping Window Size, and Spectral Species Clustering on Remote Sensing of Plant Beta Diversity Using biodivMapR and Hyperspectral Imagery.

Authors: Robertson, Kevin M.¹ (AUTHOR) krobertson@talltimbers.org, Simonson, Eli¹ (AUTHOR), Ramirez‐Bullon, Natali^1,2 (AUTHOR), Poulter, Benjamin³ (AUTHOR), Carter, Richard⁴ (AUTHOR)

Source: Journal of Geophysical Research. Biogeosciences. Jul2023, Vol. 128 Issue 7, p1-15. 15p.

Subject Terms: *Plant diversity, *Biotic communities, Spatial resolution, Remote sensing, Biological interfaces, Spectral imaging

Company/Entity: United States. National Aeronautics & Space Administration

16

Academic Journal

Algorithms for Detecting Sub‐Pixel Elevated Temperature Features for the NASA Surface Biology and Geology (SBG) Designated Observable.

Authors: Shreevastava, Anamika¹ (AUTHOR) anamika.shreevastava@jpl.nasa.gov, Hulley, Glynn¹ (AUTHOR), Thompson, James² (AUTHOR)

Source: Journal of Geophysical Research. Biogeosciences. Jul2023, Vol. 128 Issue 7, p1-14. 14p.

Subject Terms: *Wildfire prevention, *Geology, Biological interfaces, Land surface temperature, Lava flows, Flame temperature, High temperatures

Company/Entity: United States. National Aeronautics & Space Administration

17

Academic Journal

Ion‐Vortex Magnetic Hole With Reversed Field Direction in Earth's Magnetosheath.

Authors: Yao, S. T.¹ (AUTHOR), Li, J. H.² (AUTHOR) jinghuan.li@pku.edu.cn, Zhou, X.‐Z.² (AUTHOR) xuzhi.zhou@gmail.com, Shi, Q. Q.¹ (AUTHOR), Zong, Q.‐G.² (AUTHOR), Zhang, H.¹ (AUTHOR), Li, W. Y.³ (AUTHOR), Hamrin, M.⁴ (AUTHOR), Volwerk, M.⁵ (AUTHOR), Pitkänen, T.^1,4 (AUTHOR), Yang, F.² (AUTHOR)

Source: Journal of Geophysical Research. Space Physics. Jul2023, Vol. 128 Issue 7, p1-13. 13p.

Subject Terms: Plasma flow, Magnetic structure, Electromagnetic fields, Space plasmas, Ionic structure, Spheromaks, Plasma turbulence

Company/Entity: United States. National Aeronautics & Space Administration

18

Academic Journal

Rayleigh‐Taylor Instability Observed at the Dayside Magnetopause Under Northward Interplanetary Magnetic Field.

Authors: Yan, G. Q.¹ (AUTHOR) swallow9802@163.com, Parks, G. K.² (AUTHOR), Mozer, F. S.² (AUTHOR), Goldstein, M. L.³ (AUTHOR), Chen, T.⁴ (AUTHOR), Liu, Y.¹ (AUTHOR)

Source: Journal of Geophysical Research. Space Physics. Jul2023, Vol. 128 Issue 7, p1-15. 15p.

Subject Terms: Interplanetary magnetic fields, Rayleigh-Taylor instability, Magnetopause, Solar wind, Electric charge, Electrostatic fields, Plasma sheaths

Company/Entity: United States. National Aeronautics & Space Administration

19

Academic Journal

Thermal Environments and Volatile Stability Within Lunar Pits and Caves.

Authors: Wilcoski, A. X.^1,2 (AUTHOR) andrew.wilcoski@lasp.colorado.edu, Hayne, P. O.^1,2 (AUTHOR), Elder, C. M.³ (AUTHOR)

Source: Journal of Geophysical Research. Planets. Jul2023, Vol. 128 Issue 7, p1-17. 17p.

Subject Terms: *Temperature control, *Infrared radiation, *Ice, Lunar craters, Caves, Topography, Latitude

Company/Entity: United States. National Aeronautics & Space Administration

20

Academic Journal

Chromium on Mercury: New Results From the MESSENGER X‐Ray Spectrometer and Implications for the Innermost Planet's Geochemical Evolution.

Authors: Nittler, Larry R.^1,2 (AUTHOR) lnittler@asu.edu, Boujibar, Asmaa^1,3 (AUTHOR), Crapster‐Pregont, Ellen^4,5 (AUTHOR), Frank, Elizabeth A.¹ (AUTHOR), McCoy, Timothy J.⁶ (AUTHOR), McCubbin, Francis M.⁷ (AUTHOR), Starr, Richard D.^8,9 (AUTHOR), Vorburger, Audrey^4,10 (AUTHOR), Weider, Shoshana Z.^1,11 (AUTHOR)

Source: Journal of Geophysical Research. Planets. Jul2023, Vol. 128 Issue 7, p1-18. 18p.

Subject Terms: *Chromium, *Mercury, X-ray spectrometers, Mercury (Planet), Mercury oxidation, Oxidation states, Siderophile elements

Company/Entity: United States. National Aeronautics & Space Administration

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