![OREGONSTATE/PRISM/ANm](https://developers.google.com/earth-engine/datasets/images/OREGONSTATE/OREGONSTATE_PRISM_ANm_sample.png) Dataset Availability : 1895-01-01T00:00:00Z--2026-10-01T00:00:00Z Dataset Producer : [PRISM / OREGONSTATE](https://www.prism.oregonstate.edu/) Cadence : 1 Month Tags : [geophysical](https://developers.google.com/earth-engine/datasets/tags/geophysical) [monthly](https://developers.google.com/earth-engine/datasets/tags/monthly) [oregonstate](https://developers.google.com/earth-engine/datasets/tags/oregonstate) [precipitation](https://developers.google.com/earth-engine/datasets/tags/precipitation) [pressure](https://developers.google.com/earth-engine/datasets/tags/pressure) [prism](https://developers.google.com/earth-engine/datasets/tags/prism) [temperature](https://developers.google.com/earth-engine/datasets/tags/temperature) [vapor](https://developers.google.com/earth-engine/datasets/tags/vapor) [weather](https://developers.google.com/earth-engine/datasets/tags/weather) [weather-and-climate](https://developers.google.com/earth-engine/datasets/tags/weather-and-climate) #### Description The PRISM daily and monthly datasets are gridded weather datasets for the conterminous United States, produced by the PRISM Group at Oregon State University. This collection contains both AN81 and AN91 data, as indicated by the 'dataset_type' property. Grids are developed using PRISM (Parameter-elevation Regressions on Independent Slopes Model). PRISM interpolation routines simulate how weather varies with elevation, and account for coastal effects, temperature inversions, and terrain barriers that can cause rain shadows. Station data are assimilated from many networks across the country. For more information, see the [Descriptions of PRISM Spatial Datasets](https://www.prism.oregonstate.edu/documents/PRISM_datasets.pdf). **Note** - **Warning** : This dataset should not be used to calculate century-long trends due to non-weather-related variations from station equipment and location changes, openings and closings, varying observation times, and the use of relatively short-term networks. Please see the [dataset documentation](https://www.prism.oregonstate.edu/documents/PRISM_datasets.pdf) for more details. - The assets have start time of noon UTC, not midnight UTC. - It takes time for observation networks to conduct quality control and release station data. Therefore, PRISM datasets are re-modeled several times until six months have elapsed, when they are considered permanent. A [release schedule is available](https://www.prism.oregonstate.edu/calendar/). ### Bands **Bands** Pixel size: 4638.3 meters (all bands) | Name | Units | Min | Max | Pixel Size | Description | |---|---|---|---|---|---| | `ppt` | mm | 0\* | 2639.82\* | 4638.3 meters | Monthly total precipitation (including rain and melted snow) | | `tmean` | °C | -30.8\* | 41.49\* | 4638.3 meters | Monthly average of daily mean temperature (calculated as (tmin+tmax)/2) | | `tmin` | °C | -35.11\* | 34.72\* | 4638.3 meters | Monthly minimum temperature | | `tmax` | °C | -29.8\* | 49.74\* | 4638.3 meters | Monthly average of daily maximum temperature | | `tdmean` | °C | -30.7\* | 26.76\* | 4638.3 meters | Monthly average of daily mean dew point temperature | | `vpdmin` | hPa | 0\* | 44.79\* | 4638.3 meters | Monthly average of daily minimum vapor pressure deficit | | `vpdmax` | hPa | 0.009\* | 110.06\* | 4638.3 meters | Monthly average of daily maximum vapor pressure deficit | \* estimated min or max value ### Image Properties **Image Properties** | Name | Type | Description | |---|---|---| | PRISM_CODE_VERSION | STRING_LIST | List of code versions per band, e.g: the first element is for the first band "ppt", the second element is for the second band "tmean" | | PRISM_DATASET_CREATE_DATE | STRING_LIST | List of original creation dates per band in the format YYYYMMDD | | PRISM_DATASET_FILENAME | STRING_LIST | List of original filenames for each band | | PRISM_DATASET_TYPE | STRING_LIST | List of dataset types per band | | PRISM_DATASET_VERSION | STRING_LIST | List of dataset versions per band e.g: D1 or D2 for daily products; M1, M2 or M3 for monthly products. | | PRISM_DATASET_RELEASE_NUMBER | INT_LIST | An integer (1-7) per band, indicating how many times a grid has been re-modeled within the 6-month window. Grids are considered stable after 6 months. This property is not present on AN81 data. | | dataset_type | STRING | Dataset type: "AN81" or "AN91" | ### Terms of Use **Terms of Use** These PRISM datasets are available without restriction on use or distribution. PRISM Group does request that the user give proper attribution and identify PRISM, where applicable, as the source of the data. ### Citations Citations: - [Daly, C., Halbleib, M., Smith, J.I., Gibson, W.P., Doggett, M.K., Taylor, G.H., Curtis, J., and Pasteris, P.A. 2008. Physiographically-sensitive mapping of temperature and precipitation across the conterminous United States. International Journal of Climatology, 28: 2031-2064](https://www.prism.oregonstate.edu/documents/pubs/2008intjclim_physiographicMapping_daly.pdf) - \[Daly, C., J.I. Smith, and K.V. Olson. 2015. Mapping atmospheric moisture climatologies across the conterminous United States. PloS ONE 10(10):e0141140. [doi:10.1371/journal.pone.0141140](https://doi.org/10.1371/journal.pone.0141140). ### DOIs - ### Explore with Earth Engine > [!NOTE] > **Important:** Earth Engine is a platform for petabyte-scale scientific analysis and visualization of geospatial datasets, both for public benefit and for business and government users. Earth Engine is free to use for research, education, and nonprofit use. To get started, please [register for Earth Engine access.](https://console.cloud.google.com/earth-engine) ### Code Editor (JavaScript) ```javascript var dataset = ee.ImageCollection('OREGONSTATE/PRISM/ANm') .filter(ee.Filter.date('2024-08-01', '2024-11-01')); var precipitation = dataset.select('ppt'); var precipitationVis = { min: 0.0, max: 300.0, palette: ['green', 'yellow', 'red', 'cyan', 'purple'], }; Map.setCenter(-100.55, 40.71, 4); Map.addLayer(precipitation, precipitationVis, 'Precipitation'); ``` [Open in Code Editor](https://code.earthengine.google.com/?scriptPath=Examples:Datasets/OREGONSTATE/OREGONSTATE_PRISM_ANm) [PRISM Monthly Spatial Dataset ANm](https://developers.google.com/earth-engine/datasets/catalog/OREGONSTATE_PRISM_ANm) The PRISM daily and monthly datasets are gridded weather datasets for the conterminous United States, produced by the PRISM Group at Oregon State University. This collection contains both AN81 and AN91 data, as indicated by the 'dataset_type' property. Grids are developed using PRISM (Parameter-elevation Regressions on Independent Slopes Model). PRISM ... OREGONSTATE/PRISM/ANm, geophysical,monthly,oregonstate,precipitation,pressure,prism,temperature,vapor,weather,weather-and-climate 1895-01-01T00:00:00Z/2026-10-01T00:00:00Z 24 -125 50 -66 Google Earth Engine https://developers.google.com/earth-engine/datasets - [https://doi.org/10.1371/journal.pone.0141140](https://doi.org/https://www.prism.oregonstate.edu/) - [https://doi.org/10.1371/journal.pone.0141140](https://doi.org/https://developers.google.com/earth-engine/datasets/catalog/OREGONSTATE_PRISM_ANm)