Evan, Amato T (2018): Snow Water Equivalent in the Western US (1982 - 2017) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.896396, Supplement to: Evan, AT (2019): A New Method to Characterize Changes in the Seasonal Cycle of Snowpack. Journal of Applied Meteorology and Climatology, 58(1), 131-143, https://doi.org/10.1175/JAMC-D-18-0150.1
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Abstract:
These data describes changes in western US snow water equivalent (SWE) over the 1982–2017 water years. This includes observations of SWE from the NRCS SNOTEL network, the parameters used to fit the observed annual cycles of SWE to a gamma distribution PDF, and the parameters needed to recreate western US SWE on an equal angle grid. SWE values for the beginning of the water years in the fitted and fitted+interpolated values are overestimated. Thus, these data do not constitute a continuous time series from one year to the next. This is due to the fact that the tail of the Gamma distribution PDF does not drop off quickly enough to capture the rise in SWE at the beginning of the water year.
Comment:
Raw_SWE.nc: This file contains the SNOTEL station data used to create the fitted and fitted+interpolated files. This file contains the snow water equivalent (SWE) measurements (units are cm), the stations' lats and lons (units in degrees longitude and latitude), the water year day (with day 1 being October 1), and the years.
Fitted_SWE.nc: This file contains coefficients to recreate annual time series of SWE, for the stations in "Raw_SWE.nc", via the first of a gamma distribution PDF to the observed annual SWE time series. To recreate the SWE time series, use Equation 2 in the above cited paper: SWE = C * (((zeta-x)/beta)^(alpha-1)*exp((x-zeta)/beta))/(beta*Gamma(alpha)) where "x" is the water year day and "Gamma(alpha)" is the gamma function with "alpha" as its argument.
Fitted_Interpolated_SWE.nc: This file is similar to "Fitted_SWE.nc" except that the observed SWE data has additionally been spatially interpolated to an equal angle grid. Variables otherwise have the same definitions for the above files.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | File name | File name | Evan, Amato T | |||
| 2 | File format | File format | Evan, Amato T | |||
| 3 | File size | File size | kByte | Evan, Amato T | ||
| 4 | Uniform resource locator/link to file | URL file | Evan, Amato T |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Size:
12 data points