These datasets contain the mean and variance of hydrogen delta value from
precipitation water sampled at weather stations between 1953 and 2015 in
Europe (GNIPDataEUagg) and in the entire world (GNIPDataALLagg). These
data have been extracted from the International Atomic Energy Agency IAEA in
Vienna (GNIP Project: Global Network of Isotopes in Precipitation) and
processed by us using the function prepsources. The data are aggregated per
location (across all month-year combinations). We no longer provide the full
non-aggregate GNIP dataset in the package as it is not free to reuse. You can
still download the complete GNIP dataset for free, but you will have to
proceed to a registration process with GNIP and use their downloading
interface WISER
(https://nucleus.iaea.org/wiser/index.aspx).
The dataframes include many observations and the following variables:
| source_ID | (factor) | The unique identifier of the weather station |
| mean_source_value | (numeric) | Average of the aggregate of hydrogen delta values (per thousand) |
| var_source_value | (numeric) | Variance of the aggregate of hydrogen delta values (per thousand^2) |
| n_source_value | (numeric) | Number of hydrogen delta values aggregated |
| lat | (numeric) | Latitude coordinate (decimal degrees) |
| long | (numeric) | Longitude coordinate (decimal degrees) |
| elev | (numeric) | Elevation asl (m) |
These datasets have been aggregated and can thus be directly used for fitting isoscapes.
If you want to use your own dataset, you must format your data as these datasets.
GNIP Project IAEA Global Network of Isotopes in Precipitation: https://www.iaea.org
GNIPDataDE for a non-aggregated dataset.
head(GNIPDataALLagg)
dim(GNIPDataALLagg)
head(GNIPDataEUagg)
dim(GNIPDataEUagg)
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