{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:13:58.585975", "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": "2020-Jun-13_to_2020-Jun-15_332.5_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": 2020060000444}, "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": "June 13 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 15 2020"}, "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": 56352.06934722342}, "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": 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": 332.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "332.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 330.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 334.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 37.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 38.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "Polygon", "coordinates": [[[-29.177, 38.177], [-29.03, 38.53], [-28.5, 38.75], [-28.25, 38.646], [-28.177, 38.677], [-28.03, 39.03], [-27.5, 39.25], [-27.25, 39.146], [-27.0, 39.25], [-26.47, 39.03], [-26.323, 38.677], [-26.25, 38.646], [-26.0, 38.75], [-25.47, 38.53], [-25.323, 38.177], [-24.97, 38.03], [-24.75, 37.5], [-24.97, 36.97], [-25.5, 36.75], [-25.75, 36.854], [-25.823, 36.823], [-25.97, 36.47], [-26.5, 36.25], [-26.75, 36.354], [-27.0, 36.25], [-27.25, 36.354], [-27.5, 36.25], [-27.75, 36.354], [-28.0, 36.25], [-28.25, 36.354], [-28.5, 36.25], [-28.75, 36.354], [-29.0, 36.25], [-29.25, 36.354], [-29.5, 36.25], [-30.03, 36.47], [-30.25, 37.0], [-30.03, 37.53], [-29.677, 37.677], [-29.53, 38.03], [-29.177, 38.177]]]}}, "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": {"2020-06-13T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-29.67677669529661, 37.67677669529664], [-29.530330085889887, 38.03033008588991], [-29.17677669529661, 38.17677669529664], [-29.030330085889887, 38.53033008588991], [-28.5, 38.75], [-28.25, 38.64644660940672], [-28.17677669529661, 38.67677669529664], [-28.030330085889887, 39.03033008588991], [-27.5, 39.25], [-27.25, 39.14644660940672], [-27.0, 39.25], [-26.469669914110113, 39.03033008588991], [-26.32322330470339, 38.67677669529664], [-26.25, 38.64644660940672], [-26.0, 38.75], [-25.469669914110113, 38.53033008588991], [-25.32322330470339, 38.17677669529664], [-24.969669914110113, 38.03033008588991], [-24.75, 37.5], [-24.969669914110113, 36.96966991411009], [-25.5, 36.75], [-25.75, 36.85355339059328], [-25.82322330470339, 36.82322330470336], [-25.969669914110113, 36.46966991411009], [-26.5, 36.25], [-26.75, 36.35355339059328], [-27.0, 36.25], [-27.25, 36.35355339059328], [-27.5, 36.25], [-27.75, 36.35355339059328], [-28.0, 36.25], [-28.25, 36.35355339059328], [-28.5, 36.25], [-28.75, 36.35355339059328], [-29.0, 36.25], [-29.25, 36.35355339059328], [-29.5, 36.25], [-30.030330085889887, 36.46966991411009], [-30.25, 37.0], [-30.030330085889887, 37.53033008588991], [-29.67677669529661, 37.67677669529664]]]}, "2020-06-14T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-29.67677669529661, 37.67677669529664], [-29.530330085889887, 38.03033008588991], [-29.17677669529661, 38.17677669529664], [-29.030330085889887, 38.53033008588991], [-28.5, 38.75], [-28.25, 38.64644660940672], [-28.17677669529661, 38.67677669529664], [-28.030330085889887, 39.03033008588991], [-27.5, 39.25], [-27.25, 39.14644660940672], [-27.0, 39.25], [-26.469669914110113, 39.03033008588991], [-26.32322330470339, 38.67677669529664], [-26.25, 38.64644660940672], [-26.0, 38.75], [-25.469669914110113, 38.53033008588991], [-25.32322330470339, 38.17677669529664], [-24.969669914110113, 38.03033008588991], [-24.75, 37.5], [-24.969669914110113, 36.96966991411009], [-25.5, 36.75], [-25.75, 36.85355339059328], [-25.82322330470339, 36.82322330470336], [-25.969669914110113, 36.46966991411009], [-26.5, 36.25], [-26.75, 36.35355339059328], [-27.0, 36.25], [-27.25, 36.35355339059328], [-27.5, 36.25], [-27.75, 36.35355339059328], [-28.0, 36.25], [-28.25, 36.35355339059328], [-28.5, 36.25], [-28.75, 36.35355339059328], [-29.0, 36.25], [-29.25, 36.35355339059328], [-29.5, 36.25], [-30.030330085889887, 36.46966991411009], [-30.25, 37.0], [-30.030330085889887, 37.53033008588991], [-29.67677669529661, 37.67677669529664]]]}, "2020-06-15T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-29.67677669529661, 37.67677669529664], [-29.530330085889887, 38.03033008588991], [-29.17677669529661, 38.17677669529664], [-29.030330085889887, 38.53033008588991], [-28.5, 38.75], [-28.25, 38.64644660940672], [-28.17677669529661, 38.67677669529664], [-28.030330085889887, 39.03033008588991], [-27.5, 39.25], [-27.25, 39.14644660940672], [-27.0, 39.25], [-26.469669914110113, 39.03033008588991], [-26.32322330470339, 38.67677669529664], [-26.25, 38.64644660940672], [-26.0, 38.75], [-25.469669914110113, 38.53033008588991], [-25.32322330470339, 38.17677669529664], [-24.969669914110113, 38.03033008588991], [-24.75, 37.5], [-24.969669914110113, 36.96966991411009], [-25.5, 36.75], [-25.75, 36.85355339059328], [-25.82322330470339, 36.82322330470336], [-25.969669914110113, 36.46966991411009], [-26.5, 36.25], [-26.75, 36.35355339059328], [-27.0, 36.25], [-27.25, 36.35355339059328], [-27.5, 36.25], [-27.75, 36.35355339059328], [-28.0, 36.25], [-28.25, 36.35355339059328], [-28.5, 36.25], [-28.75, 36.35355339059328], [-29.0, 36.25], [-29.25, 36.35355339059328], [-29.5, 36.25], [-30.030330085889887, 36.46966991411009], [-30.25, 37.0], [-30.030330085889887, 37.53033008588991], [-29.67677669529661, 37.67677669529664]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.7266079989056493}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.3963433514151236}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [17.116124053232795, 15.881771089272888, 17.136133493515274]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [16.123368762919142, 15.265001674124335, 16.80037705072465]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.9589360562033686, -3.2257778633735517, -2.0043161346684504]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.337380054395055, -3.7266079989056493, -2.6729768633371123]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.8406595355833701, -2.9901296584323918, -1.784264107394425]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.2608915013351645, -3.6237091658664307, -2.289700026588091]}}