10.4121/aca56a60-8fcc-45b5-b817-50b68d4b5c63.v1

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A high spatial resolution Extended Spring Indices database over American and European regions Software

Raúl Zurita-Milla, Emma Izquierdo-Verdiguier,
This repository contains a high spatial resolution database of spring onset indicators derived from the Extended Spring Indices (SI-x) phenological models as well as the code used to generate these phenological products. The SI-x models transform daily minimum and maximum temperatures into a set of consistent indices that track the timing of first leaf and first bloom for key indicator species, and that also allow the calculation of the so-called damage index by subtracting the date of first leaf from the date of the last freeze.
This dataset is available at 1 km spatial resolution and covers American (1980 to 2022) and European regions (1950 to 2020).The first leaf and first bloom indices are validated with ground phenological observations collected over both regions.The American product is based on DAYMET version 4 (https://daymet.ornl.gov/) and the European region on a downscaled E-Obs database version 3 (ftp://palantir.boku.ac.at/Public/ClimateData).
This product can support both scientists

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