IMPACT OF OZONE CONCENTRATION ON OCEAN COLOUR RETRIEVALS FOR OCM-2

International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences

Rao, T. D. V. P^1¹  Bhavani, I. V. G.^1² 

[1] Department of Meteorology and Oceanography, Andhra University, Visakhapatnam, India^2;National Remote Sensing Centre, Hyderabad, India^1

关键词: OMI / Aura;    SeaDAS;    OCM-2;    NRT;   

DOI  :  10.5194/isprs-archives-XLII-5-499-2018

学科分类：地球科学(综合)

来源: Copernicus Publications

【 摘 要 】

Ozone being an absorbing gas have a significant impact on OCM-2 bands 510 nm, 555 nm and 620 nm which are using for retrieval of major geophysical parameters like Chlorophyll and suspended sediment concentrations. A study has been carried out to analyse the impact of Ozone concentration by ingesting near real time from OMI (Ozone Monitoring Instrument) on Aura instead of Climatology V2013 (2004–13) with a resolution of 1 × 1 deg for ocean colour retrievals from OCM-2 sensor using SeaWiFS Data Analysis System (SeaDAS). The spectral behaviour of Ozone transmittance has been studied for various bands of OCM-2 by using both Climatology and near real time inputs. We could observe maximum relative error percentage about 12 % from Climatology to NRT in Ozone concentration and 0.28 %, 0.66 % and 0.72 % of maximum mean relative error in ozone transmittance at 512 nm, 557 nm and 620 nm. We calculated error budgets induced by ozone in remote sensing reflectance(/sr) where in we could observe mean relative error percentage of 0.52 % in 491 nm, 1.12 % in 512 nm and 4.28 % 557 nm a bands respectively.

【 授权许可】

CC BY