Global valid observations of ocean color products
Posted: Sat May 13, 2023 4:10 am America/New_York
Recently, I have been working with ocean color product data and downloaded MODIS-T/A and VIIRS-NPP Chl-a data from the oceancolor.gsfc.nasa.gov/l3 website, with a daily-temporal and 4km-spatial resolution.
Due to factors such as cloud cover and sun glint, the Chl-a satellite-based data is severely affected by missing values. Therefore, I conducted a statistical analysis on the global valid observations of these three products and found that stripe patterns appeared in mid-latitudes and low latitudes of both hemispheres (referring to the attachment), which I consider to be potentially unreasonable. Moreover, I obtained similar results when using GEE for computation.
May I ask whether this is a problem with the product itself, or whether there are other reasons that can explain the occurrence of similar phenomena?
Due to factors such as cloud cover and sun glint, the Chl-a satellite-based data is severely affected by missing values. Therefore, I conducted a statistical analysis on the global valid observations of these three products and found that stripe patterns appeared in mid-latitudes and low latitudes of both hemispheres (referring to the attachment), which I consider to be potentially unreasonable. Moreover, I obtained similar results when using GEE for computation.
May I ask whether this is a problem with the product itself, or whether there are other reasons that can explain the occurrence of similar phenomena?