Results 41 to 50 of about 1,121 (191)

A nonlinear optimal, estimation inverse method for radio occultation measurements of temperature, humidity, and surface pressure [PDF]

, 2000
An optimal estimation inverse method is presented which can be used to retrieve simultaneously vertical profiles of temperature and specific humidity, in addition to surface pressure, from satellite-to-satellite radio occultation observations of the ...
J. R. Eyre, S. B. Healy, J. J. Barnett, Palmer, P. I., Healy, S. B., Eyre, J. R., Barnett, J. J., Paul I. Palmer   +7 more
core   +1 more source

Evaluation of Forward Models for GNSS Radio Occultation Data Processing and Assimilation [PDF]

Remote Sensing, 2022
In radio occultation (RO) data processing and data assimilation, the forward model (FM) is used to calculate bending angle (BA) from refractivity (N). The accuracy and precision of forward modeled BA are affected by refractivity profiles and FM methods, including Abel integral algorithms (direct, exp, exp_T, linear) and methods of interpolating ...
Nan Deng, Weihua Bai, Yueqiang Sun, Qifei Du, Junming Xia, Xianyi Wang, Congliang Liu, Yuerong Cai, Xiangguang Meng, Cong Yin, Feixiong Huang, Peng Hu, Guangyuan Tan, Xiaoxu Liu   +13 more
openaire   +2 more sources

Processing multiple GNSS RO data using FSI and ROPP: results from the ROMEX [PDF]

Atmospheric Measurement Techniques
Global Navigation Satellite System (GNSS) Radio Occultation (RO) is a vital technique in atmospheric remote sensing, providing all-weather, high-resolution vertical observations that support numerical weather prediction (NWP) and atmospheric research. To
Y. Chen, X. Zhou, X. Jing, S.-P. Ho, X. Shao, T.-C. Liu   +5 more
doaj   +1 more source

Application of an optimal estimation inverse method to GPS/MET bending angle observations [PDF]

, 2001
Palmer et al. [2000] describes an optimal estimation inverse method for radio occultation (RO) bending angle measurements to retrieve simultaneously temperature, humidity, and surface pressure; outlines quality control procedures for retrieved profiles ...
Palmer, P. I., Barnett, J. J.
core   +1 more source

Location of Ionospheric Irregularities in Extended GNSS-RO Measurements Using Back Propagation Method

, 2023
Besides providing electron density profiles (EDP), GNSS Radio Occultation (GNSS-RO) measurements allow monitoring the frequency and the areas where ionospheric scintillations occur.
Pettersson, Mats, Rasch, Joel,, Rasch, Joel, Ludwig Barbosa, Vinícius, Christensen, Jacob,, Ludwig Barbosa, Vinícius,, Carlstrom, Anders, Vu, Viet Thuy,, Carlstrom, Anders,, Christensen, Jacob, Pettersson, Mats,, Vu, Viet Thuy   +11 more
core   +1 more source

Monitoring global climate change using GNSS radio occultation

npj Climate and Atmospheric Science, 2022
The emerging signal of climate change is now clearly evident in Global Navigation Satellite System (GNSS) radio occultation (RO) data, matching predictions made by climate models 15 years ago. The observed RO trends represent well-understood responses to
Hans Gleisner, Mark A. Ringer, Sean B. Healy   +2 more
doaj   +1 more source

Advances in Ionospheric Space Weather by Using FORMOSAT-7/COSMIC-2 GNSS Radio Occultations

Atmosphere, 2022
This paper provides an overview of the contributions of the space-based global navigation satellite system (GNSS) radio occultation (RO) measurements from the FORMOSAT-7/COSMIC2 (F7/C2) mission in advancing our understanding of ionospheric plasma physics
Jann-Yenq Liu, Chien-Hung Lin, Panthalingal Krishnanunni Rajesh, Chi-Yen Lin, Fu-Yuan Chang, I-Te Lee, Tzu-Wei Fang, Dominic Fuller-Rowell, Shih-Ping Chen   +8 more
doaj   +1 more source

GNSS Radio Occultation Constellation Observing System Experiments

Monthly Weather Review, 2014
Abstract Observing system experiments within the operational ECMWF data assimilation framework have been performed for summer 2008 when the largest recorded number of Global Navigation Satellite System (GNSS) radio occultation observations from both operational and experimental satellites were available.
Bauer, Peter, Radnóti, G., Healy, Sean, Cardinali, Carla   +3 more
openaire   +1 more source

Commercial GNSS Radio Occultation on Aerial Platforms With Off-The-Shelf Receivers

Navigation, 2022
In recent decades, GNSS radio occultation (RO) soundings have proven to be an invaluable input to global weather forecasting. The success of government programs such as COSMIC is now complemented by commercial low-cost cubesats.
Bryan C. Chan, Ashish Goel, Jonathan Kosh, Tyler G. R. Reid, Corey R. Snyder, Paul M. Tarantino, Saraswati Soedarmadji, Widyadewi Soedarmadji, Kevin Nelson, Feiqin Xie, Michael Vergalla   +10 more
doaj   +1 more source

FY3E GNOS II GNSS Reflectometry: Mission Review and First Results

Remote Sensing, 2022
FengYun-3E (FY3E), launched on 5 July 2021, is one of China’s polar-orbiting meteorological satellite series. The GNOS II onboard FY3E is an operational GNSS remote sensor that for the first time combines GNSS radio occultation (GNSS RO) and GNSS ...
Guanglin Yang, Weihua Bai, Jinsong Wang, Xiuqing Hu, Peng Zhang, Yueqiang Sun, Na Xu, Xiaochun Zhai, Xianjun Xiao, Junming Xia, Feixiong Huang, Cong Yin, Qifei Du, Xianyi Wang, Yuerong Cai, Xiangguang Meng, Guangyuan Tan, Peng Hu, Congliang Liu   +18 more
doaj   +1 more source