A global long-term ocean surface daily/0.05° net radiation product from 1983–2020

Abstract

The all-wave net radiation (Rn) on the ocean surface characterizes the available radiative energy balance and is important to understand the Earth’s climate system. Considering the shortcomings of available ocean surface Rn datasets (e.g., coarse spatial resolutions, discrepancy in accuracy, inconsistency, and short duration), a new long-term global daily Rn product at a spatial resolution of 0.05° from 1983 to 2020, as part of the Global High Resolution Ocean Surface Energy (GHOSE) products suite, was generated in this study by fusing several existing datasets including satellite and reanalysis products based on the comprehensive in situ measurements from 68 globally distributed moored buoy sites. Evaluation against in-situ measurements shows the root mean square difference, mean bias error and correlation coefficient squared of 23.56 Wm−2, 0.88 Wm−2 and 0.878. The global average ocean surface Rn over 1983–2020 is estimated to be 119.71 ± 2.78 Wm−2 with a significant increasing rate of 0.16 Wm−2 per year. GHOSE Rn product can be valuable for oceanic and climatic studies.

An integrated and homogenized global surface solar radiation dataset and its reconstruction based on a convolutional neural network approach

“…ERA5 can be used to fill in SSR data from the oceans and Antarctica and carry out the global reconstruction, taking into account its high spatial resolution and the reliable performance of SSR (Jiao et al, 2022;Liang et al, 2022). After the reconstruction, we removed the data for the ocean reanalysis and maintained the data only in the land area (except for Antarctica).…”

“…Comparisons show that ERA5 has a high spatial resolution and relatively reliable performance in the temporal variations and long-term trends (Liang et al, 2022;Jiao et al, 2022). To obtain a higher data coverage and ensure that the AI model runs well, we used the ERA5 to fill the SSR of the homogenized global gridded SSR in the Antarctic and ocean areas.…”