Fersiynau electronig

Dolenni

  • Purna Padhy
    National Remote Sensing Center(NRSC)
  • Rabindra Nayak
    National Remote Sensing Center(NRSC)
  • V. K. Dadhwal
    National Remote Sensing Center(NRSC)
  • Salim Poovadiyil
    National Remote Sensing Centre (NRSC)
  • K H Rao
    National Remote Sensing Center(NRSC)
  • D. Mitra
    Indian Institute of Remote Sensing
  • Rama Rao Pattabhi
  • C B S Dutt
    National Remote Sensing Center(NRSC)
An empirical model is developed and used with remotely sensed predictors: sea surface temperature (SST) and chlorophyll-a concentration (Chl-a), to compute surface water partial pressure of carbon dioxide (pCO2w) and air-sea fluxes of CO2 in the Hooghly estuary and its adjacent coastal oceans. In situ observations used here were based on measurements carried out in this region during winter and summer periods in 2008. The estimated pCO2w compares well with the in situ observations at root mean square error ±18 μatm. In winter, estimated pCO2w ranges between 320 and 500 μatm with large values (>400 μatm) on the south-western and south-eastern flanks of the coastal domain and lower values (340–375 μatm) on the main-channel. In summer, it remained spatially uniform at 450 μatm. Extrapolation of the results over the study region based on the Moderate Imaging Specroradiometer (MODIS) measured SST and Chl-a suggests that the region is a strong source of atmospheric CO2 during the summer with net release of 0.095 Tg C year−1 (equivalent to mean flux of 90 molC m−2 year−1) and is a weak source during the winter with net release of 0.006 Tg C yr−1 (0.5 molC m−2 year−1) from the geographical extent of 6000 Km2 area.
Iaith wreiddiolSaesneg
Tudalennau (o-i)135-143
CyfnodolynJournal of the Indian Society of Remote Sensing
Cyfrol44
Dyddiad ar-lein cynnar17 Hyd 2015
StatwsCyhoeddwyd - 1 Chwef 2016
Cyhoeddwyd yn allanolIe
Gweld graff cysylltiadau