There is a link between the global surface area receiving daily precipitation, global precipitation and theglobal mean temperature

We show that the fraction of Earth’s surface area receiving daily precipitation is closely connected to the global statistics of local wet-day frequency and mean precipitation intensity. Our analysis, based on the ERA5 reanalysis, revealed a close match between the global mean surface temperature and both the total mass of 24-h precipitation falling on Earth’s surface as well as surface area receiving 24-h precipitation in the ERA5 data, highlighting the dependency between the greenhouse effect and the global hydrological cycle. Moreover, the total planetary precipitation and the global daily precipitation area represent links between the global warming and extreme precipitation amounts that traditionally have not been included in sets of essential climate indicators. Hence, both the total amount of precipitation falling on Earth’s surface and the fraction of the surface area on which it falls represent two key global climate indicators for Earth’s global hydrological cycle. Furthermore, the global surface area fraction of daily precipitation is connected with the global statistics of local wet-day frequencies in addition to the mean precipitation intensity. Previous work suggest that these two parameters can be used to get approximate estimates of probability for heavy daily precipitation amounts. Based on these results, we argue that the present set of global climate indicators should be extended to include the total global daily precipitation and the fraction of Earth's surface area receiving daily precipitation. It's also useful to compute the fractional global surface area with daily precipitation exceeding thresholds such as 30 mm/day and 50 mm/day.