Satellite estimates of chlorophyll a concentration in the region near Hunga Tonga-Hunga Ha'apai (1997–2022)

Satellite estimates of chlorophyll <em>a</em> concentration (mg m^-3) in the region near Hunga Tonga-Hunga Ha'apai used in the analyses presented in the article "Satellite detection of a massive phytoplankton bloom following the 2022 submarine eruption of the Hunga Tonga–Hunga Haʻapai volcano" (accepted for publication in Geophysical Research Letters). <br> Data were obtained as the Globcolour products downloaded from the Copernicus Marine Service (products OCEANCOLOUR_GLO_CHL_L3_NRT_OBSERVATIONS_009_032 and OCEANCOLOUR_GLO_CHL_L3_REP_OBSERVATIONS_009_085). These data products were replaced on July 5, 2022 by updated data products (OCEANCOLOUR_GLO_BGC_L3_NRT_009_101 and OCEANCOLOUR_GLO_BGC_L3_MY_009_103 on https://marine.copernicus.eu/). Files whose names start with 'Chlorophyll_a_map_' are maps of chlorophyll <em>a</em> concentration for the day indicated in the filename and in the file header. In those files, first columns is latitude (°N) and first row is longitude (°E). NaN depicts missing observations. The file named 'Chlorophyll_a_timeseries.csv' is the time-series in the coordinate box between 20.3–20.9°S and 174.8–175.9°W depicted in Figure 2 of the manuscript. Columns are date, average concentration, and the 5th and 95th percentile of the concentration. NaN depicts missing observations.