extract_temp_data: Extract temperature data for given population.

In LiamDBailey/baileyetal2021: Bird populations most exposed to climate change are less sensitive to climatic variation

Description

Extract temperature data for every year where laying date data are available.

Usage

extract_temp_data(Lay_date_sum)

Arguments

Lay_date_sum

Data frame. Summarised lay date data. This is needed to know what date range to extract temps over. This function is generally used inside run_climwin.

Details

For all populations except Vlieland and Sicily, we extract daily mean temperature data from the ECA&D Gridded Temperature layer of Europe (v17.0).

In four populations (Sagunto, Spain; Cardiff, UK; Barcelona, Spain; Askainen, Sweden) data were not directly available at the study site from ECA&D. Instead, we used the nearest grid square, which was never more than 8km from the actual site. See calculate_grid_distance for calculation.

For Vlieland, we used mean daily temperature from ROYAL NETHERLANDS METEOROLOGICAL INSTITUTE (KNMI). From 1954, temperature data was collected on Terschelling (the neighbouring island). From 1995, temperature data was collected directly on Vlieland.

For Sicily, we used mean temperature data collected by the data owners at the site.

Value

R data frame object with daily mean temperature.

LiamDBailey/baileyetal2021 documentation built on Feb. 10, 2022, 12:34 a.m.