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Intra-seasonal variability of atmospheric CO2 concentrations over India during summer monsoons

Ravi Kumar, K ; Valsala, Vinu ; Tiwari, Yogesh K ; Revadekar, J.V ; Pillai, Prasanth ; Chakraborty, Supriyo ; Murtugudde, Raghu

Atmospheric Environment, October 2016, Vol.142, pp.229-237 [Periódico revisado por pares]

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  • Título:
    Intra-seasonal variability of atmospheric CO2 concentrations over India during summer monsoons
  • Autor: Ravi Kumar, K ; Valsala, Vinu ; Tiwari, Yogesh K ; Revadekar, J.V ; Pillai, Prasanth ; Chakraborty, Supriyo ; Murtugudde, Raghu
  • Assuntos: Intra-Seasonal Oscillation ; Airs ; Carbon Tracker ; Atmospheric Co2 Concentration ; India ; Engineering ; Environmental Sciences
  • É parte de: Atmospheric Environment, October 2016, Vol.142, pp.229-237
  • Descrição: In a study based on a data assimilation product of the terrestrial biospheric fluxes of CO over India, the subcontinent was hypothesized to be an anomalous source (sink) of CO during the active (break) spells of rain in the summer monsoon from June to September (Valsala et al., 2013). We test this hypothesis here by investigating intraseasonal variability in the atmospheric CO concentrations over India by utilizing a combination of ground-based and satellite observations and model outputs. The results show that the atmospheric CO concentration also varies in synchrony with the active and break spells of rainfall with amplitude of ±2 ppm which is above the instrumental uncertainty of the present day techniques of atmospheric CO measurements. The result is also consistent with the signs of the Net Ecosystem Exchange (NEE) flux anomalies estimated in our earlier work. The study thus...
  • Idioma: Inglês

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