A continuous-time state-space model for rapid quality control of argos locations from animal-borne tags

Movement Ecology
Ian JonsenClive R McMahon

Abstract

State-space models are important tools for quality control and analysis of error-prone animal movement data. The near real-time (within 24 h) capability of the Argos satellite system can aid dynamic ocean management of human activities by informing when animals enter wind farms, shipping lanes, and other intensive use zones. This capability also facilitates the use of ocean observations from animal-borne sensors in operational ocean forecasting models. Such near real-time data provision requires rapid, reliable quality control to deal with error-prone Argos locations. We formulate a continuous-time state-space model to filter the three types of Argos location data (Least-Squares, Kalman filter, and Kalman smoother), accounting for irregular timing of observations. Our model is deliberately simple to ensure speed and reliability for automated, near real-time quality control of Argos location data. We validate the model by fitting to Argos locations collected from 61 individuals across 7 marine vertebrates and compare model-estimated locations to contemporaneous GPS locations. We then test assumptions that Argos Kalman filter/smoother error ellipses are unbiased, and that Argos Kalman smoother location accuracy cannot be improved...Continue Reading

References

Jan 15, 2008·Trends in Ecology & Evolution·Toby A PattersonJason Matthiopoulos
Jun 12, 2008·Ecology·Devin S JohnsonJohn W Durban
Jan 22, 2010·PloS One·Daniel P CostaDaniel E Crocker
Feb 25, 2015·Movement Ecology·Brett T McClintockJuan M Morales
Dec 10, 2015·Ecology·Christoffer Moesgaard AlbertsenJoanna Mills
Jan 6, 2016·Proceedings of the National Academy of Sciences of the United States of America·Daniel C DunnPatrick N Halpin
Jun 2, 2018·Science Advances·Elliott L HazenRebecca L Lewison
Apr 3, 2020·Nature·Mark A HindellBen Raymond

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Citations

Feb 23, 2021·Ecology and Evolution·Mark A HindellChristophe Guinet

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Software Mentioned

Argos KS
CLS
R
GPS
IMOS
NOGA
Argos
argosfilter R
foieGras R package
Template Model Builder

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