INVESTIGADORES
DE LA TORRE Alejandro
artículos
Título:
Evaluation of uncertainty in gravity wave potential energy calculations through GPS radio occultation measurements
Autor/es:
D. LUNA, P. ALEXANDER, A. DE LA TORRE
Revista:
ADVANCES IN SPACE RESEARCH
Editorial:
ELSEVIER SCI LTD
Referencias:
Lugar: Amsterdam; Año: 2013 vol. 52 p. 879 - 882
ISSN:
0273-1177
Resumen:
The application of the Global Positioning System (GPS) radio occultation (RO) method to the atmosphere enables the determination
of height profiles of temperature, among other variables. From these measurements, gravity wave activity is usually quantified by calculating
the potential energy through the integration of the ratio of perturbation and background temperatures between two given altitudes
in each profile. The uncertainty in the estimation of wave activity depends on the systematic biases and random errors of the
measured temperature, but also on additional factors like the selected vertical integration layer and the separation method between background
and perturbation temperatures. In this study, the contributions of different parameters and variables to the uncertainty in the
calculation of gravity wave potential energy in the lower stratosphere are investigated and quantified. In particular, a Monte Carlo
method is used to evaluate the uncertainty that results from different GPS RO temperature error distributions. In addition, our analysis
shows that RO data above 30 km height becomes dubious for gravity waves potential energy calculations.
