{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:23:55.446023", "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-Apr-16_to_2021-Apr-19_118.0_-75.0"}, "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": 2021040002274}, "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": "April 16 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 19 2021"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 69869.94819169778}, "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": ["Antarctica"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Antarctica"]}, "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": []}, "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": -75.0}, "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": 118.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "118.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 112.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 128.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -76.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -74.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "Polygon", "coordinates": [[[120.5, -76.25], [120.25, -76.146], [120.0, -76.25], [119.75, -76.146], [119.5, -76.25], [119.25, -76.146], [119.177, -76.177], [119.03, -76.53], [118.5, -76.75], [118.25, -76.646], [118.0, -76.75], [117.75, -76.646], [117.5, -76.75], [117.25, -76.646], [117.0, -76.75], [116.75, -76.646], [116.5, -76.75], [116.25, -76.646], [116.0, -76.75], [115.75, -76.646], [115.5, -76.75], [114.97, -76.53], [114.823, -76.177], [114.75, -76.146], [114.5, -76.25], [114.25, -76.146], [114.0, -76.25], [113.47, -76.03], [113.323, -75.677], [113.25, -75.646], [113.0, -75.75], [112.75, -75.646], [112.5, -75.75], [111.97, -75.53], [111.75, -75.0], [111.97, -74.47], [112.323, -74.323], [112.47, -73.97], [113.0, -73.75], [113.25, -73.854], [113.5, -73.75], [113.75, -73.854], [114.0, -73.75], [114.25, -73.854], [114.5, -73.75], [114.75, -73.854], [115.0, -73.75], [115.25, -73.854], [115.5, -73.75], [115.75, -73.854], [116.0, -73.75], [116.25, -73.854], [116.5, -73.75], [116.75, -73.854], [117.0, -73.75], [117.25, -73.854], [117.5, -73.75], [117.75, -73.854], [118.0, -73.75], [118.25, -73.854], [118.5, -73.75], [118.75, -73.854], [119.0, -73.75], [119.25, -73.854], [119.5, -73.75], [119.75, -73.854], [120.0, -73.75], [120.25, -73.854], [120.5, -73.75], [120.75, -73.854], [121.0, -73.75], [121.25, -73.854], [121.5, -73.75], [122.03, -73.97], [122.177, -74.323], [122.25, -74.354], [122.5, -74.25], [122.75, -74.354], [123.0, -74.25], [123.25, -74.354], [123.5, -74.25], [124.03, -74.47], [124.177, -74.823], [124.25, -74.854], [124.5, -74.75], [124.75, -74.854], [125.0, -74.75], [125.25, -74.854], [125.5, -74.75], [125.75, -74.854], [126.0, -74.75], [126.25, -74.854], [126.5, -74.75], [126.75, -74.854], [127.0, -74.75], [127.53, -74.97], [127.677, -75.323], [127.75, -75.354], [128.0, -75.25], [128.53, -75.47], [128.75, -76.0], [128.53, -76.53], [128.0, -76.75], [127.75, -76.646], [127.5, -76.75], [127.25, -76.646], [127.0, -76.75], [126.75, -76.646], [126.5, -76.75], [126.25, -76.646], [126.0, -76.75], [125.75, -76.646], [125.5, -76.75], [125.25, -76.646], [125.0, -76.75], [124.75, -76.646], [124.5, -76.75], [124.25, -76.646], [124.0, -76.75], [123.75, -76.646], [123.5, -76.75], [123.25, -76.646], [123.0, -76.75], [122.75, -76.646], [122.5, -76.75], [122.25, -76.646], [122.0, -76.75], [121.75, -76.646], [121.5, -76.75], [120.97, -76.53], [120.823, -76.177], [120.75, -76.146], [120.5, -76.25]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Antarctica"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-04-16T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[112.32322330470336, -74.32322330470336], [112.46966991411009, -73.96966991411009], [113.0, -73.75], [113.25, -73.85355339059328], [113.5, -73.75], [113.75, -73.85355339059328], [114.0, -73.75], [114.25, -73.85355339059328], [114.5, -73.75], [114.75, -73.85355339059328], [115.0, -73.75], [115.25, -73.85355339059328], [115.5, -73.75], [115.75, -73.85355339059328], [116.0, -73.75], [116.25, -73.85355339059328], [116.5, -73.75], [116.75, -73.85355339059328], [117.0, -73.75], [117.25, -73.85355339059328], [117.5, -73.75], [117.75, -73.85355339059328], [118.0, -73.75], [118.25, -73.85355339059328], [118.5, -73.75], [118.75, -73.85355339059328], [119.0, -73.75], [119.25, -73.85355339059328], [119.5, -73.75], [119.75, -73.85355339059328], [120.0, -73.75], [120.25, -73.85355339059328], [120.5, -73.75], [120.75, -73.85355339059328], [121.0, -73.75], [121.25, -73.85355339059328], [121.5, -73.75], [122.03033008588991, -73.96966991411009], [122.17677669529664, -74.32322330470336], [122.25, -74.35355339059328], [122.5, -74.25], [122.75, -74.35355339059328], [123.0, -74.25], [123.25, -74.35355339059328], [123.5, -74.25], [124.03033008588991, -74.46966991411009], [124.17677669529664, -74.82322330470336], [124.25, -74.85355339059328], [124.5, -74.75], [124.75, -74.85355339059328], [125.0, -74.75], [125.25, -74.85355339059328], [125.5, -74.75], [125.75, -74.85355339059328], [126.0, -74.75], [126.25, -74.85355339059328], [126.5, -74.75], [126.75, -74.85355339059328], [127.0, -74.75], [127.53033008588991, -74.96966991411009], [127.67677669529664, -75.32322330470336], [127.75, -75.35355339059328], [128.0, -75.25], [128.53033008588991, -75.46966991411009], [128.75, -76.0], [128.53033008588991, -76.53033008588991], [128.0, -76.75], [127.75, -76.64644660940672], [127.5, -76.75], [127.25, -76.64644660940672], [127.0, -76.75], [126.75, -76.64644660940672], [126.5, -76.75], [126.25, -76.64644660940672], [126.0, -76.75], [125.75, -76.64644660940672], [125.5, -76.75], [125.25, -76.64644660940672], [125.0, -76.75], [124.75, -76.64644660940672], [124.5, -76.75], [124.25, -76.64644660940672], [124.0, -76.75], [123.75, -76.64644660940672], [123.5, -76.75], [123.25, -76.64644660940672], [123.0, -76.75], [122.75, -76.64644660940672], [122.5, -76.75], [122.25, -76.64644660940672], [122.0, -76.75], [121.75, -76.64644660940672], [121.5, -76.75], [120.96966991411009, -76.53033008588991], [120.82322330470336, -76.17677669529664], [120.75, -76.14644660940672], [120.5, -76.25], [120.25, -76.14644660940672], [120.0, -76.25], [119.75, -76.14644660940672], [119.5, -76.25], [119.25, -76.14644660940672], [119.17677669529664, -76.17677669529664], [119.03033008588991, -76.53033008588991], [118.5, -76.75], [118.25, -76.64644660940672], [118.0, -76.75], [117.75, -76.64644660940672], [117.5, -76.75], [117.25, -76.64644660940672], [117.0, -76.75], [116.75, -76.64644660940672], [116.5, -76.75], [116.25, -76.64644660940672], [116.0, -76.75], [115.75, -76.64644660940672], [115.5, -76.75], [114.96966991411009, -76.53033008588991], [114.82322330470336, -76.17677669529664], [114.75, -76.14644660940672], [114.5, -76.25], [114.25, -76.14644660940672], [114.0, -76.25], [113.46966991411009, -76.03033008588991], [113.32322330470336, -75.67677669529664], [113.25, -75.64644660940672], [113.0, -75.75], [112.75, -75.64644660940672], [112.5, -75.75], [111.96966991411009, -75.53033008588991], [111.75, -75.0], [111.96966991411009, -74.46966991411009], [112.32322330470336, -74.32322330470336]]]}, "2021-04-17T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[112.32322330470336, -74.32322330470336], [112.46966991411009, -73.96966991411009], [113.0, -73.75], [113.25, -73.85355339059328], [113.5, -73.75], [113.75, -73.85355339059328], [114.0, -73.75], [114.25, -73.85355339059328], [114.5, -73.75], [114.75, -73.85355339059328], [115.0, -73.75], [115.25, -73.85355339059328], [115.5, -73.75], [115.75, -73.85355339059328], [116.0, -73.75], [116.25, -73.85355339059328], [116.5, -73.75], [116.75, -73.85355339059328], [117.0, -73.75], [117.25, -73.85355339059328], [117.5, -73.75], [117.75, -73.85355339059328], [118.0, -73.75], [118.25, -73.85355339059328], [118.5, -73.75], [118.75, -73.85355339059328], [119.0, -73.75], [119.25, -73.85355339059328], [119.5, -73.75], [119.75, -73.85355339059328], [120.0, -73.75], [120.25, -73.85355339059328], [120.5, -73.75], [120.75, -73.85355339059328], [121.0, -73.75], [121.25, -73.85355339059328], [121.5, -73.75], [122.03033008588991, -73.96966991411009], [122.17677669529664, -74.32322330470336], [122.25, -74.35355339059328], [122.5, -74.25], [122.75, -74.35355339059328], [123.0, -74.25], [123.25, -74.35355339059328], [123.5, -74.25], [124.03033008588991, -74.46966991411009], [124.17677669529664, -74.82322330470336], [124.25, -74.85355339059328], [124.5, -74.75], [124.75, -74.85355339059328], [125.0, -74.75], [125.25, -74.85355339059328], [125.5, -74.75], [125.75, -74.85355339059328], [126.0, -74.75], [126.25, -74.85355339059328], [126.5, -74.75], [126.75, -74.85355339059328], [127.0, -74.75], [127.53033008588991, -74.96966991411009], [127.67677669529664, -75.32322330470336], [127.75, -75.35355339059328], [128.0, -75.25], [128.53033008588991, -75.46966991411009], [128.75, -76.0], [128.53033008588991, -76.53033008588991], [128.0, -76.75], [127.75, -76.64644660940672], [127.5, -76.75], [127.25, -76.64644660940672], [127.0, -76.75], [126.75, -76.64644660940672], [126.5, -76.75], [126.25, -76.64644660940672], [126.0, -76.75], [125.75, -76.64644660940672], [125.5, -76.75], [125.25, -76.64644660940672], [125.0, -76.75], [124.75, -76.64644660940672], [124.5, -76.75], [124.25, -76.64644660940672], [124.0, -76.75], [123.75, -76.64644660940672], [123.5, -76.75], [123.25, -76.64644660940672], [123.0, -76.75], [122.75, -76.64644660940672], [122.5, -76.75], [122.25, -76.64644660940672], [122.0, -76.75], [121.75, -76.64644660940672], [121.5, -76.75], [120.96966991411009, -76.53033008588991], [120.82322330470336, -76.17677669529664], [120.75, -76.14644660940672], [120.5, -76.25], [120.25, -76.14644660940672], [120.0, -76.25], [119.75, -76.14644660940672], [119.5, -76.25], [119.25, -76.14644660940672], [119.17677669529664, -76.17677669529664], [119.03033008588991, -76.53033008588991], [118.5, -76.75], [118.25, -76.64644660940672], [118.0, -76.75], [117.75, -76.64644660940672], [117.5, -76.75], [117.25, -76.64644660940672], [117.0, -76.75], [116.75, -76.64644660940672], [116.5, -76.75], [116.25, -76.64644660940672], [116.0, -76.75], [115.75, -76.64644660940672], [115.5, -76.75], [114.96966991411009, -76.53033008588991], [114.82322330470336, -76.17677669529664], [114.75, -76.14644660940672], [114.5, -76.25], [114.25, -76.14644660940672], [114.0, -76.25], [113.46966991411009, -76.03033008588991], [113.32322330470336, -75.67677669529664], [113.25, -75.64644660940672], [113.0, -75.75], [112.75, -75.64644660940672], [112.5, -75.75], [111.96966991411009, -75.53033008588991], [111.75, -75.0], [111.96966991411009, -74.46966991411009], [112.32322330470336, -74.32322330470336]]]}, "2021-04-18T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[112.32322330470336, -74.32322330470336], [112.46966991411009, -73.96966991411009], [113.0, -73.75], [113.25, -73.85355339059328], [113.5, -73.75], [113.75, -73.85355339059328], [114.0, -73.75], [114.25, -73.85355339059328], [114.5, -73.75], [114.75, -73.85355339059328], [115.0, -73.75], [115.25, -73.85355339059328], [115.5, -73.75], [115.75, -73.85355339059328], [116.0, -73.75], [116.25, -73.85355339059328], [116.5, -73.75], [116.75, -73.85355339059328], [117.0, -73.75], [117.25, -73.85355339059328], [117.5, -73.75], [117.75, -73.85355339059328], [118.0, -73.75], [118.25, -73.85355339059328], [118.5, -73.75], [118.75, -73.85355339059328], [119.0, -73.75], [119.25, -73.85355339059328], [119.5, -73.75], [119.75, -73.85355339059328], [120.0, -73.75], [120.25, -73.85355339059328], [120.5, -73.75], [120.75, -73.85355339059328], [121.0, -73.75], [121.25, -73.85355339059328], [121.5, -73.75], [122.03033008588991, -73.96966991411009], [122.17677669529664, -74.32322330470336], [122.25, -74.35355339059328], [122.5, -74.25], [122.75, -74.35355339059328], [123.0, -74.25], [123.25, -74.35355339059328], [123.5, -74.25], [124.03033008588991, -74.46966991411009], [124.17677669529664, -74.82322330470336], [124.25, -74.85355339059328], [124.5, -74.75], [124.75, -74.85355339059328], [125.0, -74.75], [125.25, -74.85355339059328], [125.5, -74.75], [125.75, -74.85355339059328], [126.0, -74.75], [126.25, -74.85355339059328], [126.5, -74.75], [126.75, -74.85355339059328], [127.0, -74.75], [127.53033008588991, -74.96966991411009], [127.67677669529664, -75.32322330470336], [127.75, -75.35355339059328], [128.0, -75.25], [128.53033008588991, -75.46966991411009], [128.75, -76.0], [128.53033008588991, -76.53033008588991], [128.0, -76.75], [127.75, -76.64644660940672], [127.5, -76.75], [127.25, -76.64644660940672], [127.0, -76.75], [126.75, -76.64644660940672], [126.5, -76.75], [126.25, -76.64644660940672], [126.0, -76.75], [125.75, -76.64644660940672], [125.5, -76.75], [125.25, -76.64644660940672], [125.0, -76.75], [124.75, -76.64644660940672], [124.5, -76.75], [124.25, -76.64644660940672], [124.0, -76.75], [123.75, -76.64644660940672], [123.5, -76.75], [123.25, -76.64644660940672], [123.0, -76.75], [122.75, -76.64644660940672], [122.5, -76.75], [122.25, -76.64644660940672], [122.0, -76.75], [121.75, -76.64644660940672], [121.5, -76.75], [120.96966991411009, -76.53033008588991], [120.82322330470336, -76.17677669529664], [120.75, -76.14644660940672], [120.5, -76.25], [120.25, -76.14644660940672], [120.0, -76.25], [119.75, -76.14644660940672], [119.5, -76.25], [119.25, -76.14644660940672], [119.17677669529664, -76.17677669529664], [119.03033008588991, -76.53033008588991], [118.5, -76.75], [118.25, -76.64644660940672], [118.0, -76.75], [117.75, -76.64644660940672], [117.5, -76.75], [117.25, -76.64644660940672], [117.0, -76.75], [116.75, -76.64644660940672], [116.5, -76.75], [116.25, -76.64644660940672], [116.0, -76.75], [115.75, -76.64644660940672], [115.5, -76.75], [114.96966991411009, -76.53033008588991], [114.82322330470336, -76.17677669529664], [114.75, -76.14644660940672], [114.5, -76.25], [114.25, -76.14644660940672], [114.0, -76.25], [113.46966991411009, -76.03033008588991], [113.32322330470336, -75.67677669529664], [113.25, -75.64644660940672], [113.0, -75.75], [112.75, -75.64644660940672], [112.5, -75.75], [111.96966991411009, -75.53033008588991], [111.75, -75.0], [111.96966991411009, -74.46966991411009], [112.32322330470336, -74.32322330470336]]]}, "2021-04-19T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[116.35355339059328, -75.25], [116.25, -75.0], [116.46966991411009, -74.46966991411009], [117.0, -74.25], [117.25, -74.35355339059328], [117.5, -74.25], [117.75, -74.35355339059328], [118.0, -74.25], [118.25, -74.35355339059328], [118.5, -74.25], [118.75, -74.35355339059328], [119.0, -74.25], [119.25, -74.35355339059328], [119.5, -74.25], [119.75, -74.35355339059328], [120.0, -74.25], [120.25, -74.35355339059328], [120.5, -74.25], [120.75, -74.35355339059328], [121.0, -74.25], [121.25, -74.35355339059328], [121.5, -74.25], [122.03033008588991, -74.46966991411009], [122.25, -75.0], [122.03033008588991, -75.53033008588991], [121.67677669529664, -75.67677669529664], [121.53033008588991, -76.03033008588991], [121.0, -76.25], [120.75, -76.14644660940672], [120.5, -76.25], [120.25, -76.14644660940672], [120.0, -76.25], [119.75, -76.14644660940672], [119.5, -76.25], [119.25, -76.14644660940672], [119.0, -76.25], [118.75, -76.14644660940672], [118.5, -76.25], [118.25, -76.14644660940672], [118.0, -76.25], [117.75, -76.14644660940672], [117.5, -76.25], [117.25, -76.14644660940672], [117.0, -76.25], [116.46966991411009, -76.03033008588991], [116.25, -75.5], [116.35355339059328, -75.25]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 14.623608908713607}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 9.55702996237542}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-52.714285834777854, -48.086887772676135, -51.484843445107884, -52.16965869167183]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-49.93738402361785, -46.29877139144901, -49.68250255999658, -50.85370491785571]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [7.646615248790874, 12.39787047486956, 8.863912675725148, 8.44542693126597]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [10.096005765436672, 14.623608908713607, 10.682468497635256, 9.564010014306291]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4322962674427282, 2.3298996853983174, 1.6332231003628992, 1.3857722967958583]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.5848282912808995, 2.5607826111997474, 1.8015431611851298, 1.4697327051669022]}}