Atmospheric GNSS RO 1D-Var in use at UCAR: Description and validation
TK Wee, RA Anthes, DC Hunt, WS Schreiner, YH Kuo - Remote Sensing, 2022 - mdpi.com
This paper describes, along with some validation results, the one-dimensional variational
method (1D-Var) that is in use at the University Corporation for Atmospheric Research …
method (1D-Var) that is in use at the University Corporation for Atmospheric Research …
Comparison of COSMIC and COSMIC-2 radio occultation refractivity and bending angle uncertainties in August 2006 and 2021
We compare the random error statistics (uncertainties) of COSMIC (Constellation Observing
System for Meteorology, Ionosphere and Climate, C1) and COSMIC-2 (C2) radio occultation …
System for Meteorology, Ionosphere and Climate, C1) and COSMIC-2 (C2) radio occultation …
Detection of Superrefraction at the Top of the Atmospheric Boundary Layer from COSMIC-2 Radio Occultations
S Sokolovskiy, Z Zeng, DC Hunt… - … of Atmospheric and …, 2024 - journals.ametsoc.org
Superrefraction at the top of the atmospheric boundary layer introduces problems for
assimilation of radio occultation data in weather models. A method of detection of …
assimilation of radio occultation data in weather models. A method of detection of …
Synthetic Observations of the Planetary Boundary Layer from Space: A Retrieval Observing System Simulation Experiment Framework
To address critical gaps identified by the National Academies of Sciences, Engineering, and
Medicine in the current Earth system observation strategy, the 2017–27 Decadal Survey for …
Medicine in the current Earth system observation strategy, the 2017–27 Decadal Survey for …
Estimating individual radio occultation uncertainties using the observations and environmental parameters
Estimation of uncertainties (random error statistics) of radio occultation (RO) observations is
important for their effective assimilation in numerical weather prediction (NWP) models …
important for their effective assimilation in numerical weather prediction (NWP) models …
Comparison of Desroziers and three-cornered hat methods for estimating COSMIC-2 bending angle uncertainties
We compare two seemingly different methods of estimating random error statistics
(uncertainties) of observations, the three-cornered hat (3CH) method and Desroziers …
(uncertainties) of observations, the three-cornered hat (3CH) method and Desroziers …
The Influence of the Signal-to-Noise Ratio upon Radio Occultation Retrievals
M Gorbunov, V Irisov, C Rocken - Remote Sensing, 2022 - mdpi.com
We study the dependence of radio occultation (RO) inversion statistics on the signal-to-noise
ratio (SNR). We use observations from four missions: COSMIC, COSMIC-2, METOP-B, and …
ratio (SNR). We use observations from four missions: COSMIC, COSMIC-2, METOP-B, and …
Comparison of pressure, temperature and specific humidity from COSMIC-2 with radiosonde and ERA5
Pressure, temperature and specific humidity profiles from COSMIC-2 are compared with
those from ERA5 and radiosonde data from October 2019 to September 2020. The results …
those from ERA5 and radiosonde data from October 2019 to September 2020. The results …
[HTML][HTML] Estimation of refractivity uncertainties and vertical error correlations in collocated radio occultations, radiosondes, and model forecasts
JK Nielsen, H Gleisner, S Syndergaard… - Atmospheric …, 2022 - amt.copernicus.org
Random uncertainties and vertical error correlations are estimated for three independent
data sets. The three collocated data sets are (1) refractivity profiles of radio occultation …
data sets. The three collocated data sets are (1) refractivity profiles of radio occultation …
[PDF][PDF] COSMIC-2 radio occultation temperature, specific humidity, and precipitable water in Hurricane Dorian (2019)
We consider the accuracy and precision of COSMIC-2 (C2) radio occultation retrievals of
temperature, specific humidity, and precipitable water (PW) in Hurricane Dorian (2019) and …
temperature, specific humidity, and precipitable water (PW) in Hurricane Dorian (2019) and …