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La tendencia al calentamiento global de la temperatura troposférica media observada por satélites
Konstantin Y Vinnikov1, Norman C Grody
1Department of Meteorology, University of Maryland, College Park, MD 20742, USA. kostya@atmos.umd.edu
Science (New York, N.Y.)
|September 13, 2003
Resumen
Las tendencias del calentamiento global de 1978-2002 muestran un aumento de la temperatura troposférica de +0.22 a +0.26 grados C por década. El análisis de datos satelitales confirma esta tendencia al calentamiento, alineándose con los hallazgos de las estaciones meteorológicas de superficie.
Área de la Ciencia:
- Ciencias de la atmósfera Ciencias atmosféricas.
- Ciencias del clima Ciencias del clima Ciencias del clima
- La detección remota con sensores.
Sus antecedentes:
- La medición precisa de la temperatura troposférica global es crucial para comprender el cambio climático.
- El sondeo pasivo de microondas basado en satélites proporciona una amplia cobertura global para el análisis de la temperatura.
Objetivo del estudio:
- Para analizar la tendencia de la temperatura troposférica global desde 1978 hasta 2002.
- Para validar las tendencias de temperatura derivadas de satélites con datos meteorológicos de superficie.
Principales métodos:
- Utilizó datos de sondeo pasivo de microondas de los orbitadores polares de la NOAA y el satélite Aqua del Sistema de Observación de la Tierra.
- Empleó un modelo analítico de temperatura que incorpora tendencias lineales, ciclos estacionales y diurnos para una recuperación de tendencias precisa.
Principales resultados:
- Identificó una tendencia significativa de calentamiento troposférico global de +0.22 a +0.26 grados C por década.
- Consistencia demostrada entre las tendencias de temperatura derivadas de satélites y las de las estaciones meteorológicas de superficie.
Conclusiones:
- El análisis de datos satelitales confirma una tendencia sustancial de calentamiento global en la troposfera.
- El sondeo pasivo de microondas es un método confiable para monitorear los cambios de temperatura del clima a largo plazo.
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