{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:10:05.591859", "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": "2018-Feb-11_to_2018-Feb-25_298.5_6.0"}, "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": 2018020000454}, "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 11 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 25 2018"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 15}, "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": 196295.8025300331}, "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": ["Brazil", "Guyana", "Venezuela"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.South-America"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["South America"]}, "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": 6.0}, "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": 298.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "298.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 296.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 301.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 4.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 9.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-02-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-62.75, 6.5], [-62.53, 7.03], [-62.0, 7.25], [-61.75, 7.15], [-61.5, 7.25], [-61.25, 7.15], [-61.0, 7.25], [-60.47, 7.03], [-60.25, 6.5], [-60.35, 6.25], [-60.25, 6.0], [-60.47, 5.47], [-61.0, 5.25], [-61.25, 5.35], [-61.5, 5.25], [-62.03, 5.47], [-62.18, 5.82], [-62.53, 5.97], [-62.75, 6.5]]]]}, "2018-02-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-63.03, 5.97], [-63.25, 6.5], [-63.03, 7.03], [-62.5, 7.25], [-62.25, 7.15], [-62.0, 7.25], [-61.75, 7.15], [-61.5, 7.25], [-61.25, 7.15], [-61.0, 7.25], [-60.47, 7.03], [-60.25, 6.5], [-60.35, 6.25], [-60.25, 6.0], [-60.47, 5.47], [-61.0, 5.25], [-61.25, 5.35], [-61.5, 5.25], [-62.03, 5.47], [-62.18, 5.82], [-62.25, 5.85], [-62.5, 5.75], [-63.03, 5.97]]]]}, "2018-02-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-64.03, 7.03], [-63.68, 7.18], [-63.65, 7.25], [-63.75, 7.5], [-63.53, 8.03], [-63.18, 8.18], [-63.03, 8.53], [-62.68, 8.68], [-62.53, 9.03], [-62.18, 9.18], [-62.03, 9.53], [-61.5, 9.75], [-60.97, 9.53], [-60.82, 9.18], [-60.47, 9.03], [-60.32, 8.68], [-59.97, 8.53], [-59.75, 8.0], [-59.97, 7.47], [-60.32, 7.32], [-60.46, 7.0], [-60.25, 6.5], [-60.35, 6.25], [-60.25, 6.0], [-60.47, 5.47], [-61.0, 5.25], [-61.25, 5.35], [-61.5, 5.25], [-62.03, 5.47], [-62.18, 5.82], [-62.25, 5.85], [-62.32, 5.82], [-62.47, 5.47], [-63.0, 5.25], [-63.25, 5.35], [-63.5, 5.25], [-64.03, 5.47], [-64.25, 6.0], [-64.15, 6.25], [-64.25, 6.5], [-64.03, 7.03]]]]}, "2018-02-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-64.04, 7.0], [-64.25, 7.5], [-64.03, 8.03], [-63.5, 8.25], [-63.25, 8.15], [-63.18, 8.18], [-63.15, 8.25], [-63.25, 8.5], [-63.15, 8.75], [-63.25, 9.0], [-63.15, 9.25], [-63.25, 9.5], [-63.03, 10.03], [-62.5, 10.25], [-62.0, 10.04], [-61.5, 10.25], [-60.97, 10.03], [-60.82, 9.68], [-60.47, 9.53], [-60.32, 9.18], [-60.25, 9.15], [-60.0, 9.25], [-59.47, 9.03], [-59.25, 8.5], [-59.47, 7.97], [-59.82, 7.82], [-59.97, 7.47], [-60.32, 7.32], [-60.47, 6.97], [-61.0, 6.75], [-61.25, 6.85], [-61.32, 6.82], [-61.35, 6.75], [-61.25, 6.5], [-61.47, 5.97], [-62.0, 5.75], [-62.25, 5.85], [-62.32, 5.82], [-62.47, 5.47], [-63.0, 5.25], [-63.25, 5.35], [-63.5, 5.25], [-64.03, 5.47], [-64.25, 6.0], [-64.15, 6.25], [-64.25, 6.5], [-64.04, 7.0]]]]}, "2018-02-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-64.04, 7.0], [-64.25, 7.5], [-64.03, 8.03], [-63.5, 8.25], [-63.25, 8.15], [-63.18, 8.18], [-63.15, 8.25], [-63.25, 8.5], [-63.15, 8.75], [-63.25, 9.0], [-63.15, 9.25], [-63.25, 9.5], [-63.03, 10.03], [-62.5, 10.25], [-62.0, 10.04], [-61.5, 10.25], [-60.97, 10.03], [-60.82, 9.68], [-60.47, 9.53], [-60.32, 9.18], [-60.25, 9.15], [-60.0, 9.25], [-59.47, 9.03], [-59.25, 8.5], [-59.47, 7.97], [-59.82, 7.82], [-59.97, 7.47], [-60.32, 7.32], [-60.35, 7.25], [-60.25, 7.0], [-60.35, 6.75], [-60.25, 6.5], [-60.47, 5.97], [-60.82, 5.82], [-60.97, 5.47], [-61.5, 5.25], [-62.03, 5.47], [-62.18, 5.82], [-62.25, 5.85], [-62.32, 5.82], [-62.47, 5.47], [-63.0, 5.25], [-63.25, 5.35], [-63.5, 5.25], [-64.03, 5.47], [-64.25, 6.0], [-64.15, 6.25], [-64.25, 6.5], [-64.04, 7.0]]]]}, "2018-02-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-64.03, 8.03], [-63.5, 8.25], [-63.25, 8.15], [-63.18, 8.18], [-63.15, 8.25], [-63.25, 8.5], [-63.15, 8.75], [-63.25, 9.0], [-63.15, 9.25], [-63.25, 9.5], [-63.03, 10.03], [-62.5, 10.25], [-62.0, 10.04], [-61.5, 10.25], [-60.97, 10.03], [-60.82, 9.68], [-60.47, 9.53], [-60.32, 9.18], [-60.25, 9.15], [-60.0, 9.25], [-59.47, 9.03], [-59.25, 8.5], [-59.47, 7.97], [-59.82, 7.82], [-59.97, 7.47], [-60.32, 7.32], [-60.35, 7.25], [-60.25, 7.0], [-60.35, 6.75], [-60.32, 6.68], [-59.97, 6.53], [-59.75, 6.0], [-59.97, 5.47], [-60.5, 5.25], [-61.0, 5.46], [-61.5, 5.25], [-61.75, 5.35], [-62.0, 5.25], [-62.53, 5.47], [-62.68, 5.82], [-62.75, 5.85], [-63.0, 5.75], [-63.25, 5.85], [-63.5, 5.75], [-64.03, 5.97], [-64.25, 6.5], [-64.04, 7.0], [-64.25, 7.5], [-64.03, 8.03]]]]}, "2018-02-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-63.03, 7.03], [-62.5, 7.25], [-62.25, 7.15], [-62.0, 7.25], [-61.75, 7.15], [-61.68, 7.18], [-61.53, 7.53], [-61.0, 7.75], [-60.47, 7.53], [-60.25, 7.0], [-60.35, 6.75], [-60.32, 6.68], [-59.97, 6.53], [-59.75, 6.0], [-59.96, 5.5], [-59.75, 5.0], [-59.97, 4.47], [-60.5, 4.25], [-60.75, 4.35], [-61.0, 4.25], [-61.53, 4.47], [-61.75, 5.0], [-61.62, 5.3], [-61.75, 5.35], [-62.0, 5.25], [-62.53, 5.47], [-62.68, 5.82], [-63.03, 5.97], [-63.25, 6.5], [-63.03, 7.03]]], [[[-62.03, 8.47], [-62.25, 9.0], [-62.03, 9.53], [-61.5, 9.75], [-60.97, 9.53], [-60.75, 9.0], [-60.97, 8.47], [-61.5, 8.25], [-62.03, 8.47]]]]}, "2018-02-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-63.03, 8.53], [-62.5, 8.75], [-62.25, 8.65], [-62.18, 8.68], [-62.15, 8.75], [-62.25, 9.0], [-62.03, 9.53], [-61.5, 9.75], [-60.97, 9.53], [-60.75, 9.0], [-60.85, 8.75], [-60.82, 8.68], [-60.75, 8.65], [-60.5, 8.75], [-60.25, 8.65], [-60.0, 8.75], [-59.47, 8.53], [-59.32, 8.18], [-58.97, 8.03], [-58.75, 7.5], [-58.85, 7.25], [-58.75, 7.0], [-58.85, 6.75], [-58.75, 6.5], [-58.97, 5.97], [-59.5, 5.75], [-59.75, 5.85], [-59.82, 5.82], [-59.96, 5.5], [-59.75, 5.0], [-59.97, 4.47], [-60.5, 4.25], [-60.75, 4.35], [-61.0, 4.25], [-61.53, 4.47], [-61.7, 4.88], [-62.0, 4.75], [-62.53, 4.97], [-62.75, 5.5], [-62.65, 5.75], [-62.75, 6.0], [-62.53, 6.53], [-62.12, 6.7], [-62.18, 6.82], [-62.25, 6.85], [-62.5, 6.75], [-63.03, 6.97], [-63.25, 7.5], [-63.15, 7.75], [-63.25, 8.0], [-63.03, 8.53]]]]}, "2018-02-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-63.04, 7.0], [-63.25, 7.5], [-63.15, 7.75], [-63.25, 8.0], [-63.03, 8.53], [-62.5, 8.75], [-62.25, 8.65], [-62.18, 8.68], [-62.03, 9.03], [-61.5, 9.25], [-60.97, 9.03], [-60.82, 8.68], [-60.75, 8.65], [-60.5, 8.75], [-60.25, 8.65], [-60.0, 8.75], [-59.47, 8.53], [-59.32, 8.18], [-58.97, 8.03], [-58.82, 7.68], [-58.47, 7.53], [-58.25, 7.0], [-58.35, 6.75], [-58.25, 6.5], [-58.47, 5.97], [-58.87, 5.8], [-58.75, 5.5], [-58.97, 4.97], [-59.32, 4.82], [-59.47, 4.47], [-60.0, 4.25], [-60.25, 4.35], [-60.5, 4.25], [-60.75, 4.35], [-61.0, 4.25], [-61.25, 4.35], [-61.5, 4.25], [-62.03, 4.47], [-62.18, 4.82], [-62.53, 4.97], [-62.68, 5.32], [-63.03, 5.47], [-63.25, 6.0], [-63.15, 6.25], [-63.25, 6.5], [-63.04, 7.0]]]]}, "2018-02-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-63.04, 7.0], [-63.25, 7.5], [-63.15, 7.75], [-63.25, 8.0], [-63.03, 8.53], [-62.5, 8.75], [-62.25, 8.65], [-62.18, 8.68], [-62.03, 9.03], [-61.5, 9.25], [-60.97, 9.03], [-60.82, 8.68], [-60.75, 8.65], [-60.5, 8.75], [-60.25, 8.65], [-60.0, 8.75], [-59.47, 8.53], [-59.32, 8.18], [-58.97, 8.03], [-58.82, 7.68], [-58.47, 7.53], [-58.25, 7.0], [-58.35, 6.75], [-58.25, 6.5], [-58.47, 5.97], [-58.87, 5.8], [-58.75, 5.5], [-58.97, 4.97], [-59.32, 4.82], [-59.47, 4.47], [-60.0, 4.25], [-60.25, 4.35], [-60.5, 4.25], [-60.75, 4.35], [-61.0, 4.25], [-61.25, 4.35], [-61.5, 4.25], [-62.03, 4.47], [-62.18, 4.82], [-62.53, 4.97], [-62.68, 5.32], [-63.03, 5.47], [-63.25, 6.0], [-63.15, 6.25], [-63.25, 6.5], [-63.04, 7.0]]]]}, "2018-02-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-63.04, 7.0], [-63.25, 7.5], [-63.03, 8.03], [-62.5, 8.25], [-62.2, 8.12], [-62.03, 8.53], [-61.5, 8.75], [-61.25, 8.65], [-61.0, 8.75], [-60.75, 8.65], [-60.5, 8.75], [-60.25, 8.65], [-60.0, 8.75], [-59.47, 8.53], [-59.32, 8.18], [-58.97, 8.03], [-58.82, 7.68], [-58.47, 7.53], [-58.25, 7.0], [-58.35, 6.75], [-58.25, 6.5], [-58.47, 5.97], [-58.87, 5.8], [-58.75, 5.5], [-58.97, 4.97], [-59.32, 4.82], [-59.47, 4.47], [-60.0, 4.25], [-60.25, 4.35], [-60.5, 4.25], [-60.75, 4.35], [-61.0, 4.25], [-61.25, 4.35], [-61.5, 4.25], [-62.03, 4.47], [-62.18, 4.82], [-62.53, 4.97], [-62.68, 5.32], [-63.03, 5.47], [-63.25, 6.0], [-63.15, 6.25], [-63.25, 6.5], [-63.04, 7.0]], [[-61.15, 7.25], [-61.18, 7.32], [-61.25, 7.35], [-61.5, 7.25], [-61.8, 7.38], [-61.87, 7.2], [-61.5, 7.04], [-61.18, 7.18], [-61.15, 7.25]]]]}, "2018-02-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-63.03, 6.53], [-62.5, 6.75], [-62.25, 6.65], [-62.0, 6.75], [-61.75, 6.65], [-61.68, 6.68], [-61.53, 7.03], [-61.0, 7.25], [-60.75, 7.15], [-60.5, 7.25], [-59.97, 7.03], [-59.75, 6.5], [-59.85, 6.25], [-59.75, 6.0], [-59.96, 5.5], [-59.75, 5.0], [-59.97, 4.47], [-60.5, 4.25], [-61.03, 4.47], [-61.18, 4.82], [-61.25, 4.85], [-61.5, 4.75], [-61.75, 4.85], [-62.0, 4.75], [-62.53, 4.97], [-62.68, 5.32], [-63.03, 5.47], [-63.25, 6.0], [-63.03, 6.53]]], [[[-62.03, 7.47], [-62.25, 8.0], [-62.15, 8.25], [-62.25, 8.5], [-62.03, 9.03], [-61.5, 9.25], [-61.25, 9.15], [-61.0, 9.25], [-60.47, 9.03], [-60.32, 8.68], [-59.97, 8.53], [-59.75, 8.0], [-59.97, 7.47], [-60.5, 7.25], [-60.75, 7.35], [-61.0, 7.25], [-61.25, 7.35], [-61.5, 7.25], [-62.03, 7.47]]]]}, "2018-02-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-63.03, 6.53], [-62.5, 6.75], [-62.25, 6.65], [-62.0, 6.75], [-61.75, 6.65], [-61.68, 6.68], [-61.53, 7.03], [-61.0, 7.25], [-60.75, 7.15], [-60.5, 7.25], [-59.97, 7.03], [-59.75, 6.5], [-59.85, 6.25], [-59.75, 6.0], [-59.96, 5.5], [-59.75, 5.0], [-59.97, 4.47], [-60.5, 4.25], [-61.03, 4.47], [-61.18, 4.82], [-61.25, 4.85], [-61.5, 4.75], [-61.75, 4.85], [-62.0, 4.75], [-62.53, 4.97], [-62.68, 5.32], [-63.03, 5.47], [-63.25, 6.0], [-63.03, 6.53]]], [[[-62.03, 7.47], [-62.25, 8.0], [-62.15, 8.25], [-62.25, 8.5], [-62.15, 8.75], [-62.25, 9.0], [-62.03, 9.53], [-61.5, 9.75], [-60.97, 9.53], [-60.82, 9.18], [-60.47, 9.03], [-60.32, 8.68], [-59.97, 8.53], [-59.75, 8.0], [-59.97, 7.47], [-60.5, 7.25], [-60.75, 7.35], [-61.0, 7.25], [-61.25, 7.35], [-61.5, 7.25], [-62.03, 7.47]]]]}, "2018-02-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-62.53, 4.97], [-62.75, 5.5], [-62.53, 6.03], [-62.0, 6.25], [-61.47, 6.03], [-61.25, 5.5], [-61.47, 4.97], [-62.0, 4.75], [-62.53, 4.97]]], [[[-61.5, 9.75], [-60.97, 9.53], [-60.82, 9.18], [-60.47, 9.03], [-60.25, 8.5], [-60.47, 7.97], [-61.0, 7.75], [-61.25, 7.85], [-61.5, 7.75], [-62.03, 7.97], [-62.25, 8.5], [-62.15, 8.75], [-62.25, 9.0], [-62.03, 9.53], [-61.5, 9.75]]]]}, "2018-02-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-62.03, 9.53], [-61.5, 9.75], [-60.97, 9.53], [-60.75, 9.0], [-60.85, 8.75], [-60.75, 8.5], [-60.97, 7.97], [-61.5, 7.75], [-62.03, 7.97], [-62.25, 8.5], [-62.15, 8.75], [-62.25, 9.0], [-62.03, 9.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.581886067045673}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.4224386092047487}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [21.923743900885484, 21.945996663733524, 23.08113825151952, 23.751251633418974, 23.331400102665384, 23.28633461239167, 21.947624776808482, 22.617176942231936, 22.122606921431213, 22.03408502460428, 21.853764137342694, 21.234057033665863, 21.360631974524097, 22.573619618285647, 24.00884621083833]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [19.952052737941585, 19.815751512154236, 19.32897093696937, 21.812571131778043, 20.362821730221526, 20.135120073456562, 20.000884017756903, 18.22030769183101, 17.628203442174083, 17.613014449271077, 17.8609680965734, 17.98454520988497, 17.777628490776806, 18.453405438179914, 23.748501543009922]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.5603961386413743, -1.508991752852656, -1.5843735364912572, -1.4614791832482368, -1.7675977314628963, -1.6504678173503418, -1.302711934051765, -1.2331492844528402, -1.324664329932067, -1.4215718975520113, -1.2119536129130015, -1.1551966232229276, -1.2601392777869076, -1.1286380657996773, -1.096911320676952]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.7507896068874516, -1.89704481220474, -2.581886067045673, -2.2269050993632504, -2.3965621042061684, -2.4436402055066537, -1.7487546672157919, -1.64700092413716, -1.7287529466944989, -1.8808546380340658, -1.7114611605425694, -1.5223200020640775, -1.7318765697195886, -1.48640089162717, -1.1596328894043495]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4749048136723988, -1.447615685053873, -1.7448329830939306, -1.7288049860453198, -2.035875019185561, -1.8755230508344924, -1.4542409817134627, -1.5331401657016748, -1.6807321270322264, -1.814286518502536, -1.5767667203000733, -1.4919467526670456, -1.5714478004087167, -1.536209910683385, -1.4677906648810153]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.558035107044824, -1.7337180575358069, -2.3092629625596874, -2.4930869191653464, -2.6483731656552623, -2.418581766516367, -1.649962327445167, -2.1284279060205558, -2.29220989138905, -2.201919036749598, -2.1107823680269964, -1.9658464856353084, -2.090140537333625, -1.9562208484614338, -1.4839508068310414]}}