Results 41 to 50 of about 139,455 (200)

The benefit of neighborhood methods for the assimilation of cloud‐affected radiances evaluated in observing‐system simulation experiments

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Neighborhood methods are commonly used in verification to avoid the double‐penalty issue. This study evaluates such methods for the assimilation of infrared and visible satellite observations and extends them to multiscale assimilation. Moreover, a novel technique is tested aimed at mitigating complex biases and structural errors in real‐world model ...
Lukas Kugler, Stefano Serafin, Andrea Hochebner, Nicola Pierotti, Martin Weissmann   +4 more
wiley   +1 more source

Nowcasting convective cores using deep learning

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Key findings: •$$ \bullet $$ Network for Nowcasting Convective Cores (NetNCC) has considerable potential for convective storm nowcasting and the development of early warning systems for extreme rainfall. •$$ \bullet $$ Skilful nowcasts of convective cores are obtained at fine spatial resolutions (<30km$$ <30\kern0.15em \mathrm{km} $$) for up to 2 hr ...
Jawairia A. Ahmad, Cornelia Klein, Christopher Taylor, Seonaid R. Anderson, Steven C. Wells, David C. Hogg   +5 more
wiley   +1 more source

Variations in Observations of Geosynchronous Magnetopause and Last Closed Drift Shell Crossings With Magnetic Local Time

Space Weather, 2022
We analyze a set of events in which both electron flux dropouts caused by magnetopause shadowing and geosynchronous magnetopause crossings (GMCs) are observed.
Thomas A. Daggitt, Richard B. Horne, Sarah A. Glauert, Giulio DelZanna, Mervyn P. Freeman   +4 more
doaj   +1 more source

Lightning electromagnetic emission location using arrival time differencing (LEELA): An introduction to the Met Office's next generation Very Low Frequency lightning location system

Quarterly Journal of the Royal Meteorological Society, EarlyView.
This paper describes the Met Office's new lightning location system LEELA. A brief overview of the upgraded hardware and geolocation algorithms is given. LEELA has improved lightning detection capabilities, especially at night. When comparing LEELA to the previous ATDnet system against ground truths LEELA has 100% storm detection efficiency within 5 km
Graeme Marlton, Mike Protts, Stephen Prust, Edmund Keith Stone, Debbie O'Sullivan, Sue Twelves, Francesco Devoto, Claire Witham   +7 more
wiley   +1 more source

ABI Water Vapor Radiance Assimilation in a Regional NWP Model by Accounting for the Surface Impact

Earth and Space Science, 2019
There are a growing number of advanced imagers for geostationary meteorological satellites, which can provide water vapor radiance observations with high temporal and spatial resolutions.
Jung‐Rim Lee, Jun Li, Zhenglong Li, Pei Wang, Jinlong Li   +4 more
doaj   +1 more source

Geocentric Spherical Surfaces Emulating the Geostationary Orbit at Any Latitude with Zenith Links

Future Internet, 2020
According to altitude, the orbits of satellites constellations can be divided into geostationary Earth orbit (GEO), medium Earth orbit (MEO), and low Earth orbit (LEO) constellations.
Emilio Matricciani
doaj   +1 more source

Hypothetical Visible Bands of Advanced Meteorological Imager Onboard the Geostationary Korea Multi-Purpose Satellite -2A Using Data-To-Data Translation

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2022
True-color imagery of satellites provides various atmospheric and surface information for intuitive understanding and visualization. This article presents a conditional generative adversarial network method for generating daytime and nighttime ...
Kyung-Hoon Han, Jae-Cheol Jang, Sumin Ryu, Eun-Ha Sohn, Sungwook Hong   +4 more
doaj   +1 more source

Enhancing severe convection forecasts with microwave radiance assimilation in limited‐area models

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Microwave satellite radiances remain largely underexploited in convection‐permitting limited‐area models. We assess the assimilation of humidity‐sensitive radiances from the MHS instrument in the operational ICON‐2I model, improving the precipitation forecast of a severe convective event over the Marche region, Italy, substantially by correcting ...
Marcello Grenzi, Thomas Gastaldo, Virginia Poli, Chiara Marsigli, Tijana Janjic, Alberto Carrassi   +5 more
wiley   +1 more source

Object‐based deep learning for probabilistic convective‐core nowcasting from satellite data

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Convective cores detected from Meteosat infrared imagery are represented as compact physical objects to generate probabilistic nowcasts up to 6 h ahead. A spatio‐temporal transformer models interactions among evolving core populations and produces gridded probability forecasts across the western Sahel.
Mendrika Rakotomanga, Douglas J. Parker, Nadhir Ben Rached, Seonaid R. Anderson, Cornelia Klein, Steven C. Wells   +5 more
wiley   +1 more source

The Arctic Observing Mission (AOM): A high priority candidate mission for the Government of Canada [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
The Arctic Observing Mission (AOM) is a satellite mission concept under study by the Canadian Space Agency (CSA), in partnership with Environment and Climate Change Canada (ECCC) and Natural Resources Canada (NRCan).
R. Nassar, J. Mendonca, C. Sioris, A. Casey, M. Arkett, J. Aparicio, K. Ziolkowski, D.-T. Nguyen, S.-E. Qian, M.-A. Fobert, A. Trishchenko   +10 more
doaj   +1 more source