{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:11:43.686417", "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-Feb-26_to_2020-Feb-28_176.5_-41.0"}, "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": 2020020002579}, "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 26 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 28 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": "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": 54627.10741036999}, "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": ["New Zealand"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Oceania"]}, "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": ["Pacific Ocean", "Reserve"]}, "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": -41.0}, "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": 176.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "176.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 175.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 177.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -44.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -40.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "Polygon", "coordinates": [[[174.854, -43.75], [174.75, -43.5], [174.854, -43.25], [174.75, -43.0], [174.854, -42.75], [174.75, -42.5], [174.854, -42.25], [174.75, -42.0], [174.97, -41.47], [175.375, -41.302], [175.25, -41.0], [175.47, -40.47], [175.823, -40.323], [175.97, -39.97], [176.5, -39.75], [176.75, -39.854], [177.0, -39.75], [177.53, -39.97], [177.75, -40.5], [177.646, -40.75], [177.75, -41.0], [177.646, -41.25], [177.75, -41.5], [177.646, -41.75], [177.75, -42.0], [177.646, -42.25], [177.75, -42.5], [177.53, -43.03], [177.125, -43.198], [177.25, -43.5], [177.146, -43.75], [177.25, -44.0], [177.146, -44.25], [177.25, -44.5], [177.03, -45.03], [176.5, -45.25], [176.25, -45.146], [176.0, -45.25], [175.75, -45.146], [175.5, -45.25], [174.97, -45.03], [174.75, -44.5], [174.854, -44.25], [174.75, -44.0], [174.854, -43.75]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["New-Zealand"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-02-26T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[174.85355339059328, -44.25], [174.75, -44.0], [174.85355339059328, -43.75], [174.75, -43.5], [174.85355339059328, -43.25], [174.75, -43.0], [174.85355339059328, -42.75], [174.75, -42.5], [174.85355339059328, -42.25], [174.75, -42.0], [174.96966991411009, -41.46966991411009], [175.375, -41.30177669529664], [175.25, -41.0], [175.46966991411009, -40.46966991411009], [175.82322330470336, -40.32322330470336], [175.96966991411009, -39.96966991411009], [176.5, -39.75], [176.75, -39.85355339059328], [177.0, -39.75], [177.53033008588991, -39.96966991411009], [177.75, -40.5], [177.64644660940672, -40.75], [177.75, -41.0], [177.64644660940672, -41.25], [177.75, -41.5], [177.64644660940672, -41.75], [177.75, -42.0], [177.64644660940672, -42.25], [177.75, -42.5], [177.53033008588991, -43.03033008588991], [177.125, -43.19822330470336], [177.25, -43.5], [177.14644660940672, -43.75], [177.25, -44.0], [177.14644660940672, -44.25], [177.25, -44.5], [177.03033008588991, -45.03033008588991], [176.5, -45.25], [176.25, -45.14644660940672], [176.0, -45.25], [175.75, -45.14644660940672], [175.5, -45.25], [174.96966991411009, -45.03033008588991], [174.75, -44.5], [174.85355339059328, -44.25]]]}, "2020-02-27T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[174.85355339059328, -44.25], [174.75, -44.0], [174.85355339059328, -43.75], [174.75, -43.5], [174.85355339059328, -43.25], [174.75, -43.0], [174.85355339059328, -42.75], [174.75, -42.5], [174.85355339059328, -42.25], [174.75, -42.0], [174.96966991411009, -41.46966991411009], [175.375, -41.30177669529664], [175.25, -41.0], [175.46966991411009, -40.46966991411009], [175.82322330470336, -40.32322330470336], [175.96966991411009, -39.96966991411009], [176.5, -39.75], [176.75, -39.85355339059328], [177.0, -39.75], [177.53033008588991, -39.96966991411009], [177.75, -40.5], [177.64644660940672, -40.75], [177.75, -41.0], [177.64644660940672, -41.25], [177.75, -41.5], [177.64644660940672, -41.75], [177.75, 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duration", "value": 2.3761516298773113}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [18.367054496355706, 18.659247309104444, 18.75927722996414]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [20.04853507336435, 20.676164010639468, 22.078975230621268]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.125282349245083, 2.406986247671007, 2.5961862927158443]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.9767066092432515, 3.155867257040711, 4.620908834401746]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.3681508330388013, 1.5292796530136281, 1.5997669992576242]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.562397804034306, 1.7329998138071847, 2.1323450268633954]}}