HySN5, daily, 2001 through 2017

Daily HySN5 data from 2001 through 2017. Data from 1979 through 2000 is stored here.

HySN5 is a high resolution HYbrid SeNorge data set of daily near surface humidity and surface incident shortwave and longwave radiation, and surface pressure created by merging reanalysis data (Era5) with a national 1-by-1 km gridded temperature data set, SeNorge2018. The assumptions and methods used to downscale humidity and longwave radiation are similar to those used in WATCH/PGMFD/NLDAS-1. The data has the same projection as SeNorge, UTM33, and is stored for precipitation days, i.e. the datestamp is day-month-year 06 UTC and the variable represents average value of the preceding 24 hours. 

A previous version of the data set, derived from Era-Interim and SeNorge version 2 is described, and compared to surface observations and other data sets here: GitHub, Erlandsen, H. B., Tallaksen, L. M., and Kristiansen, J.: Merits of novel high-resolution estimates and existing long-term estimates of humidity and incident radiation in a complex domain, Earth Syst. Sci. Data, 11, 797-821, https://doi.org/10.5194/essd-11-797-2019, 2019, and in its supplement: Supplement of Earth Syst. Sci. Data, 11, 797–821, 2019 https://doi.org/10.5194/essd-11-797-2019-supplement.