{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:22:08.334852", "data_source": "ERA5", "website": "http://wexa.jamstec.go.jp", "Author": "Patrick Martineau"}, "event_id": {"name": "Event ID", "description": "A unique identifier based on: beginning_date, end_date, longitude, and latitude", "value": "2021-Feb-03_to_2021-Feb-05_333.0_36.5"}, "event_label": {"name": "Event label", "description": "Integer-valued grid identifier that uniquely labels each detected extreme event in space and time, consistent with the corresponding labels stored in the NetCDF dataset.", "value": 2021020000189}, "status": {"name": "Status", "description": "An ongoing event denotes an event that lasts up to the latest data available. These events are subject to change as newer data is added.", "value": false}, "start_date": {"name": "Start date", "description": "First date on which grid points are under the influence of an event", "value": "February 03 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 05 2021"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "figures_available": {"name": "Figures available", "description": "True if figures were pre-generated for this event", "value": true}, "detection_var": {"name": "Detection variable", "description": "Variable used for the detection scheme", "value": "t2m"}, "event_type": {"name": "Event type", "description": "Type of the event detected", "value": "Cold spell"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 57575.17084196643}, "countries_affected": {"name": "Countries affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the countries affected by an event during its lifetime.", "value": ["Portugal"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Europe"]}, "oceans_affected": {"name": "Ocean basins affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the ocean basins affected by an event during its lifetime.", "value": ["Atlantic Ocean"]}, "center_lat": {"name": "Center latitude", "description": "Latitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": 36.5}, "center_lon": {"name": "Center longitude", "description": "Longitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": 333.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "333.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 333.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 335.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 34.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 37.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "Polygon", "coordinates": [[[-27.646, 35.75], [-27.75, 36.0], [-27.646, 36.25], [-27.75, 36.5], [-27.646, 36.75], [-27.75, 37.0], [-27.53, 37.53], [-27.0, 37.75], [-26.75, 37.646], [-26.5, 37.75], [-26.25, 37.646], [-26.0, 37.75], [-25.75, 37.646], [-25.5, 37.75], [-25.25, 37.646], [-25.0, 37.75], [-24.47, 37.53], [-24.25, 37.0], [-24.375, 36.698], [-23.97, 36.53], [-23.75, 36.0], [-23.854, 35.75], [-23.75, 35.5], [-23.97, 34.97], [-24.323, 34.823], [-24.47, 34.47], [-24.823, 34.323], [-24.97, 33.97], [-25.5, 33.75], [-26.03, 33.97], [-26.198, 34.375], [-26.5, 34.25], [-26.75, 34.354], [-27.0, 34.25], [-27.53, 34.47], [-27.75, 35.0], [-27.646, 35.25], [-27.75, 35.5], [-27.646, 35.75]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Atlantic-Ocean"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-02-03T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-27.646446609406723, 35.25], [-27.75, 35.5], [-27.646446609406723, 35.75], [-27.75, 36.0], [-27.646446609406723, 36.25], [-27.75, 36.5], [-27.646446609406723, 36.75], [-27.75, 37.0], [-27.530330085889887, 37.53033008588991], [-27.0, 37.75], [-26.75, 37.64644660940672], [-26.5, 37.75], [-26.25, 37.64644660940672], [-26.0, 37.75], [-25.75, 37.64644660940672], [-25.5, 37.75], [-25.25, 37.64644660940672], [-25.0, 37.75], [-24.469669914110113, 37.53033008588991], [-24.25, 37.0], [-24.375, 36.69822330470337], [-23.969669914110113, 36.53033008588991], [-23.75, 36.0], [-23.853553390593277, 35.75], [-23.75, 35.5], [-23.969669914110113, 34.96966991411009], [-24.32322330470339, 34.82322330470336], [-24.469669914110113, 34.46966991411009], [-24.82322330470339, 34.32322330470336], [-24.969669914110113, 33.96966991411009], [-25.5, 33.75], [-26.030330085889887, 33.96966991411009], [-26.198223304703333, 34.37500000000001], [-26.5, 34.25], [-26.75, 34.35355339059328], [-27.0, 34.25], [-27.530330085889887, 34.46966991411009], [-27.75, 35.0], [-27.646446609406723, 35.25]]]}, "2021-02-04T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-27.646446609406723, 35.25], [-27.75, 35.5], [-27.646446609406723, 35.75], [-27.75, 36.0], [-27.646446609406723, 36.25], [-27.75, 36.5], [-27.646446609406723, 36.75], [-27.75, 37.0], [-27.530330085889887, 37.53033008588991], [-27.0, 37.75], [-26.75, 37.64644660940672], [-26.5, 37.75], [-26.25, 37.64644660940672], [-26.0, 37.75], [-25.75, 37.64644660940672], [-25.5, 37.75], [-25.25, 37.64644660940672], [-25.0, 37.75], [-24.469669914110113, 37.53033008588991], [-24.25, 37.0], [-24.375, 36.69822330470337], [-23.969669914110113, 36.53033008588991], [-23.75, 36.0], [-23.853553390593277, 35.75], [-23.75, 35.5], [-23.969669914110113, 34.96966991411009], [-24.32322330470339, 34.82322330470336], [-24.469669914110113, 34.46966991411009], [-24.82322330470339, 34.32322330470336], [-24.969669914110113, 33.96966991411009], [-25.5, 33.75], [-26.030330085889887, 33.96966991411009], [-26.198223304703333, 34.37500000000001], [-26.5, 34.25], [-26.75, 34.35355339059328], [-27.0, 34.25], [-27.530330085889887, 34.46966991411009], [-27.75, 35.0], [-27.646446609406723, 35.25]]]}, "2021-02-05T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-27.646446609406723, 35.25], [-27.75, 35.5], [-27.646446609406723, 35.75], [-27.75, 36.0], [-27.646446609406723, 36.25], [-27.75, 36.5], [-27.646446609406723, 36.75], [-27.75, 37.0], [-27.530330085889887, 37.53033008588991], [-27.0, 37.75], [-26.75, 37.64644660940672], [-26.5, 37.75], [-26.25, 37.64644660940672], [-26.0, 37.75], [-25.75, 37.64644660940672], [-25.5, 37.75], [-25.25, 37.64644660940672], [-25.0, 37.75], [-24.469669914110113, 37.53033008588991], [-24.25, 37.0], [-24.375, 36.69822330470337], [-23.969669914110113, 36.53033008588991], [-23.75, 36.0], [-23.853553390593277, 35.75], [-23.75, 35.5], [-23.969669914110113, 34.96966991411009], [-24.32322330470339, 34.82322330470336], [-24.469669914110113, 34.46966991411009], [-24.82322330470339, 34.32322330470336], [-24.969669914110113, 33.96966991411009], 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anomalies.", "value": [-2.0084269348638286, -2.3816084328952023, -1.3851438489524426]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.5721766040223315, -2.5708566159623842, -1.5168929316386652]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.8982862803462561, -2.2859891516770525, -1.339265484299774]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.442509433111223, -2.413720565558456, -1.4244013027591307]}}