Dew Point Temperature¶
In this section, MERRA-2 2-meter dew point temperature is compared to observations reported to the National Center for Environmental Information (NCEI – formerly National Climatic Data Center). Selected surface sites from the NCEI Integrated Surface Database (ISD) files are used for the hourly MERRA-2 comparisons. Global "Summary of the Day" (GSOD) files are used for the comparison to the daily mean MERRA-2 dew point temperature.
Hourly¶
Hourly Dew Point Temperature
Density plot of the 2-D histograms comparing MERRA-2 hourly dew point temperatures with station observations from the selected NCEI ISD files for the years 2001 - 2019. Darker reds indicate a higher number of matched pairs within the 2-D histogram.
As with the daily average validation, the hourly validation shows good clustering along the 1:1 correlation line.
Daily Average¶
Daily Dew Point Temperature
Density plot of the 2-D histograms comparing MERRA-2 daily averaged dew point temperatures with station observations from the NCEI GSOD files for 1981 – 2020. Darker reds indicate a higher number of matched pairs within the 2-D histogram.
