Results 51 to 60 of about 1,678 (161)

Spectral Outgoing Longwave Radiation Derived From the Polar Radiant Energy in the Far Infrared Experiment (PREFIRE) Measurements: Algorithms and Validations

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 4, 28 February 2026.
Abstract The far‐infrared (>16 μm) spectrum plays a crucial role in Earth's radiation budget but was rarely observed from space before 2024. Two Polar Radiant Energy in the Far Infrared Experiment (PREFIRE) satellites, PREFIRE2 (SAT‐2) and PREFIRE1 (SAT‐1), were launched in 2024.
Xiuhong Chen, Xianglei Huang, Qing Yue, Brian H. Kahn, Tim Michaels, Kyle Mattingly, Nathaniel B. Miller, Aronne Merrelli, Brian J. Drouin, Tristan L’Ecuyer   +9 more
wiley   +1 more source

Validating Machine Learning Retrievals of the Cloud‐Top Droplet Effective Radius Over Oceans That Account for 3D Radiative Transfer Effects

Journal of Geophysical Research: Atmospheres, Volume 130, Issue 23, 16 December 2025.
Abstract Bispectral retrievals of the droplet effective radius (re) from instruments such as MODIS are widely utilized to study cloud microphysics in marine boundary layer clouds. These retrievals are known to have systematic errors due to cloud heterogeneity. Here, we develop a neural network regression to retrieve cloud‐top re at a solar zenith angle
J. R. Loveridge, D. Fu, L. Di Girolamo
wiley   +1 more source

Exploiting Machine Learning to Develop Ocean Color Retrievals From the Tropospheric Emissions: Monitoring of Pollution Instrument

Earth and Space Science, Volume 12, Issue 11, November 2025.
Abstract Retrievals of ocean color (OC) properties from space are important for understanding the ocean ecosystem, the carbon cycle, and monitoring events such as harmful algal blooms (HABs). The recently launched U.S. National Aeronautics and Space Administration (NASA) Earth Venture Instrument, the geostationary Tropospheric Emissions: Monitoring of ...
Z. Fasnacht, J. Joiner, M. Bandel, A. Ibrahim, A. Heidinger, M. D. Himes, J. Allen, J. Carr, X. Liu, H. Chong, N. Krotkov   +10 more
wiley   +1 more source

Retrieval of Total Precipitable Water Under All‐Weather Conditions From Himawari‐8/AHI Observations Using the Generative Diffusion Model

Geophysical Research Letters, Volume 52, Issue 15, 16 August 2025.
Abstract Accurate, spatiotemporally continuous total precipitable water (TPW) data under all‐weather conditions are crucial for understanding water and energy cycles. This study introduces TPWDiff‐CB, a novel deep learning‐based TPW retrieval model that employs a generative diffusion model.
Haixia Xiao, Feng Zhang, Renhe Zhang, Feng Lu, Miao Cai, Lingxiao Wang   +5 more
wiley   +1 more source

Hourly Sulfur Dioxide Observations Over North America: First Retrieval Results From TEMPO

Geophysical Research Letters, Volume 52, Issue 14, 28 July 2025.
Abstract We present the first sulfur dioxide (SO2) retrievals from Tropospheric Emissions: Monitoring of Pollution (TEMPO), the first geostationary atmospheric composition sensor to cover North America, along with some potential applications of TEMPO SO2 data. We show that high resolution (∼10 km2) TEMPO measurements can be used to produce good quality
Can Li, Nickolay A. Krotkov, Joanna Joiner, Simon Carn, Vitali Fioletov, Chris McLinden, Debora Griffin, Xiong Liu, Heesung Chong   +8 more
wiley   +1 more source

Narrow‐Linewidth Emission and Weak Exciton‐Phonon Coupling in 2D Layered Germanium Halide Perovskites

Advanced Materials, Volume 37, Issue 27, July 10, 2025.
The structural and photophysical properties of the 2D layered metal halides (4F‐PMA)2GeI4 and (4F‐PMA)2PbI4 are reported. For the Ge composition, reduced exciton‐phonon coupling is found and the absence of bound‐exciton emission, present for the Pb composition.
Zachary A. VanOrman, Benjamin Savinson, Tejas Deshpande, Isaiah W. Gilley, Rosario Scopelliti, Antti‐Pekka M. Reponen, Mercouri G. Kanatzidis, Edward H. Sargent, Oleksandr Voznyy, Sascha Feldmann   +9 more
wiley   +1 more source

Türkiye’deki Mevduat Bankalarının Üretim ve Aracılık Etkinlikleri: İki-Aşamalı Network VZA Uygulaması

, 2022
Bankacılık operasyon sürecinin birbiriyle ilişkili alt süreçlerden oluşan network sistemlere uyduğu\rbilinmektedir. Tek aşamalı sistemlere kıyasla daha karmaşık bir yapıya sahip olan bu tür sistemlerin etkinlik\ranalizinde standart VZA yaklaşımını ...
Göker, İlkut Elif Kandil, Dirik, Ceren
core  

Emulating Daytime ABI Cloud Optical Properties at Night With Machine Learning

Journal of Geophysical Research: Atmospheres, Volume 130, Issue 12, 28 June 2025.
Abstract Cloud optical property retrievals from passive satellite imagers tend to be most accurate during the daytime due to the availability of visible and near‐infrared solar reflectance. Infrared (IR) channels have a relative lack of spectral sensitivity to optically thick clouds and are heavily influenced by cloud‐top temperature making retrievals ...
Charles H. White, Yoo‐Jeong Noh, John M. Haynes, Imme Ebert‐Uphoff   +3 more
wiley   +1 more source

SAĞLIK SİSTEMLERİ ETKİNLİĞİNİN İKİ AŞAMALI DİNAMİK VZA YAKLAŞIMI İLE DEĞERLENDİRİLMESİ

Bu araştırmanın amacı, sağlık sistemleri etkinliğini Dinamik VZA yöntemiyle ölçmektir. Araştırmanın diğer amacı ise etkinliğe etki eden açıklayıcı ve çevresel faktörleri tespit etmektir.
Şener, Mehmet, Yiğit, Vahit
core   +2 more sources

Estimating radiant flux of nighttime light images from NASA’s Black Marble product

Geo-spatial Information Science
Recently, radiant flux has been proved as a more accurate measure of nighttime light (NTL) compared to radiance. To estimate radiant flux of NTL from nighttime light images accurately, we propose a practical methodology that considers the anisotropy of ...
Xi Li, Bingqing Sun, Hanrui Cao
doaj   +1 more source