Αποτελέσματα Αναζήτησης
This heat map shows changes in frequency of climate- and energy-related terms (e.g. “climate change”) in a selection of five EPA document collections: issues of EPA Journal, EPA news releases, EPA strategic plan documents, EPA budget summaries, and EPA budget justification documents.
31 Μαΐ 2024 · View EPA historical events as a timeline or a list, including the first Earth Day, official formation of EPA, notable environmental emergencies and resulting policies such as Clean Air Act, and other advancements in pollution control.
27 Ιουν 2024 · Frequency: the number of heat waves that occur every year. Duration: the length of each individual heat wave, in days. Season length: the number of days between the first heat wave of the year and the last.
Over 130 data fields are available for each facility, including the frequency of inspections, violations, actions, and penalties.
6 Σεπ 2024 · Frequency of Flooding Along U.S. Coasts, 2014–2023 Versus 1950–1959. This map shows the average number of days per year in which coastal waters rose above a local threshold for flooding at 42 sites along U.S. coasts.
AQI is calculated each day for each monitor for the Criteria Gases and PM10 and PM2.5 (FRM and non FRM). The AQI values are on the respective records in those Daily Summary files. There are also annual summary AQI files that show by CBSA (metro area) or county the annual statistics for AQI (max, number of values in each category, etc.).
1 Νοε 2020 · These data cover the contiguous 48 states. Interpretation: An index value of 0.2 (for example) could mean that 20 percent of the country experienced one heat wave, 10 percent of the country experienced two heat waves, or some other combination of frequency and area resulted in this value.
