Results 71 to 80 of about 11,650 (287)

The Effect of Water Vapor and Solar Zenith Angle on Oceanic Diurnal Warming

Geophysical Research Letters, Volume 52, Issue 9, 16 May 2025.
Abstract Oceanic diurnal warm layers have been extensively studied over the years due to their important role in a variety of geophysical disciplines. Much of this research has been dedicated to the development of predictive models of varying complexity to calculate the spatiotemporal magnitude of the effect. This manuscript presents results which show
Andrew Harris, Gary Wick, Sandra Castro
wiley   +1 more source

Preliminary Products of Precise Orbit Determination Using Satellite Laser Ranging Observations for ILRS AAC [PDF]

Journal of Astronomy and Space Sciences, 2012
In this study, we present preliminary results of precise orbit determination (POD) using satellite laser ranging (SLR) observations for International Laser Ranging Service (ILRS) Associate Analysis Center (AAC).
Young-Rok Kim, Sang-Young Park, Eun-Seo Park, Hyung-Chul Lim   +3 more
doaj   +1 more source

Magnetospheric Cold Plasma Diagnostics Using High Altitude GNSS Signals

Journal of Geophysical Research: Space Physics, Volume 130, Issue 3, March 2025.
Abstract The plasmasphere is a key component of Earth's magnetosphere, regulating numerous energy transfer processes. The plasmasphere is also a cold multi‐species plasma. Tracing differences in dynamics between low and high mass cold ions is important for identifying the processes that drive plasmaspheric evolution.
D. M. Malaspina, P. Axelrad, J. Goldstein, R. Nikoukar, D. Rowland, S. Fantinato, E. Miotti   +6 more
wiley   +1 more source

Discovering Unmodeled Components in Astrodynamics with Symbolic Regression

IEEE Congress on Evolutionary Computation, 2020
The paper explores the use of symbolic regression to discover missing parts of the dynamics of space objects from tracking data. The starting assumption is that the differential equations governing the motion of an observable object are incomplete and do
M. Manzi, M. Vasile
semanticscholar   +1 more source

Seasonal and Local Time Variation in the Observed Peak of the Meteor Altitude Distributions by Meteor Radars

Journal of Geophysical Research: Atmospheres, Volume 129, Issue 21, 16 November 2024.
Abstract Meteoroids of sub‐milligram sizes burn up high in the Earth's atmosphere and cause streaks of plasma trails detectable by meteor radars. The altitude at which these trails, or meteors, form depends on a number of factors including atmospheric density and the astronomical source populations from which these meteoroids originate.
E. C. M. Dawkins, D. Janches, G. Stober, J. D. Carrillo‐Sánchez, R. S. Lieberman, C. Jacobi, T. Moffat‐Griffin, N. J. Mitchell, N. Cobbett, P. P. Batista, V. F. Andrioli, R. A. Buriti, D. J. Murphy, J. Kero, N. Gulbrandsen, M. Tsutsumi, A. Kozlovsky, M. Lester, J.‐H. Kim, C. Lee, A. Liu, B. Fuller, D. O’Connor, S. E. Palo, M. J. Taylor, J. Marino, N. Rainville   +26 more
wiley   +1 more source

Influence of Ocean Currents on Wave Modeling and Satellite Observations: Insights From the One Ocean Expedition

Journal of Geophysical Research: Oceans, Volume 129, Issue 11, November 2024.
Abstract This study investigates the influence of ocean currents on wave modeling and satellite observations using in situ wave measurements from the One Ocean Expedition 2021–2023. In January 2023, six OpenMetBuoy drifters were deployed in the Agulhas Current region.
Ourania Altiparmaki, Øyvind Breivik, Lotfi Aouf, Patrik Bohlinger, Johnny A. Johannessen, Fabrice Collard, Craig Donlon, Gaute Hope, Pieter N. A. M. Visser, Marc Naeije   +9 more
wiley   +1 more source

Potential effects of optical solar sail degredation on trajectory design [PDF]

, 2005
The optical properties of the thin metalized polymer films that are projected for solar sails are assumed to be affected by the erosive effects of the space environment.
Baturkin, Volodymyr, Coverstone, Victoria L., Dachwald, Bernd, Diedrich, Benjamin, Garbe, Gregory P., Gorlich, Marianne, Leipold, Manfred, Lura, Franz, Macdonald, Malcolm, McInnes, Colin R., Mengali, Giovanni, Quarta, Alessandro A., Rios-Reyes, Leonel, Scheeres, Daniel J., Sebolt, Wolfgang, Wie, Bong   +15 more
core  

Non-averaged regularized formulations as an alternative to semi-analytical orbit propagation methods

, 2019
This paper is concerned with the comparison of semi-analytical and non-averaged propagation methods for Earth satellite orbits. We analyse the total integration error for semi-analytical methods and propose a novel decomposition into dynamical, model ...
Amato, Davide, Baù, Giulio, Bombardelli, Claudio, Morand, Vincent, Rosengren, Aaron J.   +4 more
core   +1 more source

Analytical, circle-to-circle low-thrust transfer trajectories with plane change [PDF]

, 2013
Orbit averaging techniques are used to develop analytical approximations of circle-to-circle low-thrust trajectory transfers with plane-change about the Sun.
Appourchaux T., Innes C.R., Mann T., Quarta A.A., Wakker K.E., Wertz J. R.   +5 more
core   +1 more source

Evaluation of Modeled Diurnal Warming Estimates for Application to Producing Sea Surface Temperature Analyses

Earth and Space Science, Volume 11, Issue 9, September 2024.
Abstract Accurate knowledge of the amount of diurnal warming present in sea surface temperature (SST) observations at different times and effective depths is important for multiple applications including the production of blended SST analyses. This work explores the ability of a modified Kantha‐Clayson‐type one‐dimensional mixed layer ocean model with ...
Gary A. Wick, Sandra L. Castro, Andrew Harris, Jonathan Mittaz   +3 more
wiley   +1 more source