Search

Abstract ANCHOR is a novel assimilative model developed at the U.S. Naval Research Laboratory, which was designed for rapid assimilative runs. ANCHOR uses recently developed PyIRI model for the background and for the formation of the background covariance matrix. It only takes a few minutes for ANCHOR to complete the data assimilation (DA) for one day, including data pre‐processing and model set up. ANCHOR extracts ionospheric parameters from radio occultation (RO) and ionosonde data using PyIRI formalism and assimilates them as point measurements into maps of the background parameters using a Kalman Filter approach. This paper introduces the ANCHOR algorithm, discusses its coordinate system and background, explains the background covariance formation, discusses the extraction of the ionospheric parameters from the data and the assimilation process, and, finally, shows the results of the observing system simulation experiment with synthetic data simulated using the SAMI3 model. ANCHOR reduces the root mean square errors in the analysis by more than a half for all of the ionospheric parameters in comparison to the background. Finally, this paper discusses advantages and limitations of the parametrized ionospheric DA, highlighting the avenues for its future improvement.

Abstract Recent advances in data processing from the Cloud Imaging and Particle Size (CIPS) instrument on the NASA Aeronomy of Ice in the Mesosphere satellite allow observation of bright mesospheric clouds at mid‐latitudes (

Aim: Organ and Tissue Donation Coordinators (OTDCs) are healthcare professionals who manage deceased organ donation cases. This study investigated the experiences and perceptions of OTDCs, pertaining to compassion fatigue, burnout, and resilience as it relates to their daily work., Methodology: A qualitative descriptive study was undertaken using semi-structured interviews conducted with a convenience sample of OTDCs., Setting: A Canadian Organ Donation Organization., Findings: Seven out of the ten OTDCs contacted participated in this study. Coordinators all agreed that they work in a high-pressure and demanding environment and the constant exposure to work-related stress and grief has resulted in the majority of them experiencing signs and symptoms of burnout and compassion fatigue occurring throughout their career. Participants described that the emotional toll of work-related stressors and difficult cases led them to use a variety of defence strategies to protect and support their well-being. They also recognised that more strategies to help mitigate work-related stressors and to prevent burnout and compassion fatigue are needed and that management and institutions should lead the development of such interventions., Conclusion: Our results describe how coordinators' mental health is affected by their daily work. Further research is needed to comprehensively examine these work-related stressors and to generate additional data to support the development of interventions to mitigate burnout and compassion fatigue among OTDCs., (Copyright © 2021 Elsevier Ltd. All rights reserved.)