Cetaceans (whales, dolphins, and porpoises) data to understand their abundance and distribution ​​​​This portal assembles at-sea effort-related data collected via ship-based or aerial methods, collated under the Joint Cetacean Database Programme (JCDP). The JCDP aims to streamline the process of accessing and utilising these data by collating the existing and forthcoming cetacean evidence base into a single resource. These data have a wide range of applications and have the potential to support analyses at a range of spatial and temporal scales. The JCDP database hosted by ICES stomach content database includes data from aerial and ship-based surveys from the Arctic waters, Greater North Sea, Northeast, Celtic seas and Bay of Biscay. Data from 74 distinct surveys are published here - Cornwall Wildlife Trust Marine Megafauna Ferry surveys~ 2010-2013, SCANS (Small cetaceans in the European Atlantic and North Sea)-94, SCANS-II and SCANS-III- spanning over the years 1994, 2005, 2009-2013 and 2016. The data are organised at an effort level (effort is a specific time interval within a survey, dedicated to the sightings of marine mammals), and sightings of different taxonomic groups are reported as occurrences. 5411 occurrences of marine mammals and a few other species are reported.

Original provider: Happywhale Dataset credits: Happywhale and contributors Abstract: Happywhale.com is a resource to help you know whales as individuals, and to benefit conservation science with rich data about individual whales. Supplemental information: Sightings and images were submitted to Happywhale by contributors. A portion of the Happywhale data were transferred to OBIS-SEAMAP upon the agreement between Happywhale and OBIS-SEAMAP. There may be duplicate records among Happywhale datasets and other OBIS-SEAMAP datasets. The precision of date/time vary per record. Some records have date accuracy up to year only. This dataset includes sightings and photos from the following 0 contributors in alphabetic order:

99.7 percentile of daily wind speed, for the period 1991-2020, at a 1x1 km spatial resolution.

Number of days with an average air temperature below zero degrees (tas <0 °C) for the period 1991-2020, at a 1x1 km spatial resolution. Based on daily temperature normals.

99.7 percentile of daily precipitation for year or season, for the period 1991-2020, at a 1x1 km spatial resolution. (kg m-2 equals mm)

Number of days with minimum temperature above or equal to 20 degrees (tasmin>=20 °C) for the period 1991-2020, at a 1x1 km spatial resolution.

Number of days with maximum temperature above or equal to 20 degrees (tasmax>=20 °C) for the period 1991-2020, at a 1x1 km spatial resolution.

Sum of degree days above 5 degrees (tas>5ºC) for the period 1991-2020, at a 1x1 km spatial resolution. Growing degree days, also called growing degree numbers, are the sum of the heat of the day and are a measure of how good the conditions are for plant growth. The heat sum for a day is defined as the number of degrees the daily average temperature is above a threshold value. Based on daily temperature normals.

EMODnet Chemistry aims to provide access to marine chemistry datasets and derived data products concerning eutrophication, acidity and contaminants. The importance of the selected substances and other parameters relates to the Marine Strategy Framework Directive (MSFD). This aggregated dataset contains all unrestricted EMODnet Chemistry data on eutrophication and acidity, and covers the Norwegian Sea, Barents Sea, Greenland Sea and Icelandic Waters. Data were aggregated and quality controlled by 'Institute of Marine Research - Norwegian Marine Data Centre (NMD)' in Norway. ITS-90 water temperature and water body salinity variables have also been included ('as are') to complete the eutrophication and acidity data. If you use these variables for calculations, please refer to SeaDataNet for the quality flags: https://www.seadatanet.org/Products/Aggregated-datasets . Regional datasets concerning eutrophication and acidity are automatically harvested, and the resulting collections are aggregated and quality controlled using ODV Software and following a common methodology for all sea regions ( https://doi.org/10.13120/8xm0-5m67 ). Parameter names are based on P35 vocabulary, which relates to EMODnet Chemistry aggregated parameter names and is available at: https://vocab.nerc.ac.uk/search_nvs/P35/ . When not present in original data, water body nitrate plus nitrite was calculated by summing all nitrate and nitrite parameters. The same procedure was applied for water body dissolved inorganic nitrogen (DIN), which was calculated by summing all nitrate, nitrite, and ammonium parameters. Concentrations per unit mass were converted to a unit volume using a constant density of 1.025 kg/L. The aggregated dataset can also be downloaded as an ODV collection and spreadsheet, which is composed of a metadata header followed by tab separated values. This spreadsheet can be imported to ODV Software for visualisation (more information can be found at: https://www.seadatanet.org/Software/ODV ).

Median number of days per year with minimum temperature below 0 degrees (tasmin<0 °C) in the beginning of the growing season, computed for each year separately for the period 1991-2020 (see also MET report 9/2025), at a 1x1 km spatial resolution. The beginning of the growing season lasts until July 1 or until the end of the growing season when this is earlier than July 1.