{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:46:52.425788", "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": "2011-Feb-22_to_2011-Feb-27_353.0_37.5"}, "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": 2011020002355}, "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 22 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 27 2011"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": "Heat wave"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 123961.15735312464}, "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", "Spain"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Mediterranean"]}, "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": ["North Atlantic Ocean", "Strait of Gibraltar"]}, "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": 37.5}, "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": 353.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "353.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 351.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 356.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 35.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 40.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-02-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-4.0, 40.25], [-3.47, 40.03], [-3.25, 39.5], [-3.47, 38.97], [-4.0, 38.75], [-4.53, 38.97], [-4.75, 39.5], [-4.53, 40.03], [-4.0, 40.25]]]]}, "2011-02-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-5.53, 36.47], [-5.75, 37.0], [-5.53, 37.53], [-5.0, 37.75], [-4.47, 37.53], [-4.25, 37.0], [-4.47, 36.47], [-5.0, 36.25], [-5.53, 36.47]]], [[[-7.75, 37.5], [-7.53, 38.03], [-7.0, 38.25], [-6.47, 38.03], [-6.25, 37.5], [-6.47, 36.97], [-7.0, 36.75], [-7.53, 36.97], [-7.75, 37.5]]], [[[-4.5, 40.04], [-4.0, 40.25], [-3.47, 40.03], [-3.25, 39.5], [-3.47, 38.97], [-3.82, 38.82], [-3.97, 38.47], [-4.5, 38.25], [-4.75, 38.35], [-5.0, 38.25], [-5.53, 38.47], [-5.75, 39.0], [-5.65, 39.25], [-5.75, 39.5], [-5.53, 40.03], [-5.0, 40.25], [-4.5, 40.04]]]]}, "2011-02-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-8.65, 36.25], [-8.75, 36.5], [-8.65, 36.75], [-8.75, 37.0], [-8.54, 37.5], [-8.75, 38.0], [-8.53, 38.53], [-8.18, 38.68], [-8.15, 38.75], [-8.25, 39.0], [-8.15, 39.25], [-8.18, 39.32], [-8.53, 39.47], [-8.75, 40.0], [-8.53, 40.53], [-8.0, 40.75], [-7.75, 40.65], [-7.5, 40.75], [-7.25, 40.65], [-7.0, 40.75], [-6.5, 40.54], [-6.0, 40.75], [-5.5, 40.54], [-5.0, 40.75], [-4.47, 40.53], [-4.32, 40.18], [-4.25, 40.15], [-4.0, 40.25], [-3.47, 40.03], [-3.25, 39.5], [-3.35, 39.25], [-3.25, 39.0], [-3.47, 38.47], [-4.0, 38.25], [-4.25, 38.35], [-4.32, 38.32], [-4.35, 38.25], [-4.32, 38.18], [-3.97, 38.03], [-3.75, 37.5], [-3.97, 36.97], [-4.32, 36.82], [-4.47, 36.47], [-4.82, 36.32], [-4.85, 36.25], [-4.75, 36.0], [-4.97, 35.47], [-5.5, 35.25], [-6.03, 35.47], [-6.25, 36.0], [-6.15, 36.25], [-6.2, 36.38], [-6.32, 36.32], [-6.47, 35.97], [-6.82, 35.82], [-6.85, 35.75], [-6.75, 35.5], [-6.97, 34.97], [-7.5, 34.75], [-7.75, 34.85], [-8.0, 34.75], [-8.53, 34.97], [-8.75, 35.5], [-8.65, 35.75], [-8.75, 36.0], [-8.65, 36.25]]]]}, "2011-02-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-8.65, 36.25], [-8.75, 36.5], [-8.65, 36.75], [-8.75, 37.0], [-8.54, 37.5], [-8.75, 38.0], [-8.53, 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"2011-02-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-8.03, 37.53], [-7.5, 37.75], [-6.97, 37.53], [-6.75, 37.0], [-6.85, 36.75], [-6.75, 36.5], [-6.97, 35.97], [-7.5, 35.75], [-8.03, 35.97], [-8.25, 36.5], [-8.15, 36.75], [-8.25, 37.0], [-8.03, 37.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 6.493816446761912}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 3.4876271063083593}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [11.196573296866347, 12.355294312351418, 14.343795355925693, 14.744263742261921, 14.577623184952358, 15.785045970317128]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [11.196573296866347, 14.95876254192234, 16.858198024337696, 17.05509350774804, 16.620060038942427, 16.042078624868225]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [3.7590025180948032, 3.033206315874177, 3.3345202993760914, 3.7022773335894157, 3.545578844045399, 1.8043762230379627]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [3.7590025180948032, 3.3115487407300748, 4.883997968375013, 5.960321628815564, 6.493816446761912, 1.8775044599258877]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.329029448262718, 1.2022895116592816, 1.477082783433242, 1.6106657853109838, 1.5084154159261822, 1.202906846202434]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.329029448262718, 1.3107941520482096, 1.914763017647929, 2.318124107800144, 2.122667856747302, 1.2184494204318315]}}