Results 51 to 60 of about 182 (148)

Global 24 solar terms phenological MODIS normalized difference vegetation index dataset in 2001–2022

Geoscience Data Journal, Volume 11, Issue 4, Page 936-947, October 2024.
This study generated a global Normalized Difference Vegetation Index (NDVI) product based on the 24 solar terms (24STs) using Moderate Resolution Imaging Spectroradiometer (MODIS) on the Google Earth Engine (GEE). The 24STs NDVI dataset adopted the maximum value compositing (MVC) to process the NDVI values between two adjacent 24STs.
Jingyu Yang, Taixia Wu, Xiying Sun, Kai Liu, Muhammad Farhan, Xuan Zhao, Quanshan Gao, Yingying Yang, Yuhan Shao, Shudong Wang   +9 more
wiley   +1 more source

Calibration of a hybrid sea ice model during an expedition to the Arctic

Proceedings in Applied Mathematics and Mechanics, Volume 24, Issue 3, October 2024.
Abstract We describe the acquisition and evaluation of data during the ArcWatch II expedition into the Arctic Ocean on board of the icebreaker Polarstern. The data is used to calibrate a hybrid sea ice model that focuses on modeling the marginal ice zone, which is the transition zone between pack ice and the open ocean.
Carolin Mehlmann, Thomas Richter
wiley   +1 more source

Oxygen isotopic compositions of fresh rooftop micrometeorites from the Budel collection—Insights into the contemporary cosmic dust flux

Meteoritics &Planetary Science, Volume 59, Issue 6, Page 1236-1257, June 2024.
Abstract Cosmic dust particles originate from a wide variety of solar system and interstellar objects, including sources not identified among meteorite collections. Particles that survive atmospheric entry are retrieved on the Earth's surface as micrometeorites. The recovery of these micrometeorites has recently advanced to rooftop sites.
Guido Jonker, Flore van Maldeghem, Matthias van Ginneken, Lisa Krämer Ruggiu, Steven Goderis   +4 more
wiley   +1 more source

A Novel Gravity Wave Transport Parametrization for Global Chemistry Climate Models: Description and Validation

Journal of Advances in Modeling Earth Systems, Volume 16, Issue 5, May 2024.
Abstract The gravity wave drag parametrization of the Whole Atmosphere Community Climate Model (WACCM) has been modified to include the wave‐driven atmospheric vertical mixing caused by propagating, non‐breaking, gravity waves. The strength of this atmospheric mixing is represented in the model via the “effective wave diffusivity” coefficient (Kwave ...
Maria‐Vittoria Guarino, Chester S. Gardner, Wuhu Feng, Bernd Funke, Maya García‐Comas, Manuel López‐Puertas, Marcin M. Kupilas, Daniel R. Marsh, John M. C. Plane   +8 more
wiley   +1 more source

SKYSURF. VI. The Impact of Thermal Variations of HST on Background Light Estimates

The Astronomical Journal
The SKYSURF project constrained extragalactic background light and diffuse light (DL) with the vast archive of Hubble Space Telescope (HST) images.
Isabel A. McIntyre, Timothy Carleton, Rosalia O’Brien, Rogier A. Windhorst, Sarah Caddy, Seth H. Cohen, Rolf A. Jansen, John MacKenty, Scott J. Kenyon   +8 more
doaj   +1 more source

MoonShine: A software‐hardware system for simulating moonlight ground illuminance and re‐creating artificial moonlight cycles in a laboratory environment

Methods in Ecology and Evolution, Volume 15, Issue 4, Page 701-715, April 2024.
Abstract Moonlight exerts profound ecological, behavioural and physiological effects on animals. However, lunar cycles are characterised by complex changes in the illuminance and timing of illumination, making it challenging to re‐create and manipulate moonlight cycles in the laboratory using artificial lights.
Lok Poon, Ian T. Jenks, W. G. R. Crampton   +2 more
wiley   +1 more source

A TeV-based Determination of the Local Extragalactic Background Light and Its Consistency with Galaxy Counts and Direct Measurements

The Astrophysical Journal Letters
The extragalactic background light (EBL), the cumulative radiation from all extragalactic sources, traces galaxy formation and cosmic evolution. High-energy γ -rays attenuated via pair production with EBL photons are a powerful probe of the EBL.
J. Baxter, A. Domínguez, J. D. Finke, A. Desai, M. Ajello, A. Banerjee, Dieter Hartmann, Vaidehi S. Paliya   +7 more
doaj   +1 more source

Effect of Dust and Hot Spots on the Thermal Stability of Laser Sails. [PDF]

Nano Lett, 2023
Jaffe GR, Holdman GR, Jang MS, Feng D, Kats MA, Brar VW.   +5 more
europepmc   +1 more source

The symmetry surface of the zodiacal cloud outside the Earth's orbit

Planetary and Space Science, 1990
The location in space of the symmetry surface of the zodiacal cloud at elongation angles 110-140 deg from the sun is determined from observations of the zodiacal light taken from the Pioneer 10 space probe, and from the zodiacal light experiment on Skylab.
Space Astronomy Laboratory, University of Florida, Gainesville, FL 32609, U.S.A. ( host institution ), Misconi, Nebil Y. ( author ), Rusk, Edwin T. ( author ), Weinberg, J.L. ( author )   +3 more
openaire   +2 more sources

Worlds Next Door: A Candidate Giant Planet Imaged in the Habitable Zone of α Centauri A. II. Binary Star Modeling, Planet and Exozodi Search, and Sensitivity Analysis

The Astrophysical Journal Letters
The James Webb Space Telescope (JWST) observed our closest solar twin, α Centauri A ( α Cen A), with the Mid-Infrared Instrument in the F1550C (15.5 μ m) coronagraphic imaging mode at three distinct epochs between 2024 August and 2025 April.
Aniket Sanghi, Charles Beichman, Dimitri Mawet, William O. Balmer, Nicolas Godoy, Laurent Pueyo, Anthony Boccaletti, Max Sommer, Alexis Bidot, Elodie Choquet, Pierre Kervella, Pierre-Olivier Lagage, Jarron Leisenring, Jorge Llop-Sayson, Michael Ressler, Kevin Wagner, Mark Wyatt   +16 more
doaj   +1 more source