Google Earth Engine——Daymet V3提供美国、墨西哥、加拿大、夏威夷和波多黎各的每日天气参数的网格化气象数据集

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发布于 2024-02-02 12:03:52

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发布于 2024-02-02 12:03:52

Daymet V3 provides gridded estimates of daily weather parameters for United States, Mexico, Canada, Hawaii, and Puerto Rico. It is derived from selected meteorological station data and various supporting data sources.

Compared to the previous version, Daymet V3 uses an entirely new suite of inputs including:

NASA SRTM DEM version 2.1.
Land/Water Mask: MODIS 250 MOD44W_v2.NASA_ORNL_
Horizon files derived from the SRTM DEM.
Ground station weather inputs from several sources with QA/QC.

Documentation:

Daymet V3提供美国、墨西哥、加拿大、夏威夷和波多黎各的每日天气参数的网格化估计。它是由选定的气象站数据和各种辅助数据来源得出的。

与前一版本相比，Daymet V3使用一套全新的输入，包括。

NASA SRTM DEM 2.1版。

土地/水掩码。MODIS 250 MOD44W_v2.NASA_ORNL_。

从SRTM DEM导出的地平线文件。

来自几个来源的地面站天气输入，有质量保证/质量控制。

文件。

ORNL DAAC数据集文档

数据集文档

该数据集的THREDDS位置

Dataset Availability

1980-01-01T00:00:00 - 2019-12-31T00:00:00

Dataset Provider

NASA ORNL DAAC at Oak Ridge National Laboratory

Collection Snippet

ee.ImageCollection("NASA/ORNL/DAYMET_V3")

Resolution

1000 meters

Bands Table

Name	Description	Min*	Max*	Units
dayl	Duration of the daylight period. Based on the period of the day during which the sun is above a hypothetical flat horizon.	0	86400	seconds
prcp	Daily total precipitation, sum of all forms converted to water-equivalent.	0	200	mm
srad	Incident shortwave radiation flux density, taken as an average over the daylight period of the day.	0	800	W/m^2
swe	Snow water equivalent, the amount of water contained within the snowpack.	0	1000	kg/m^2
tmax	Daily maximum 2-meter air temperature.	-50	50	°C
tmin	Daily minimum 2-meter air temperature.	-50	50	°C
vp	Daily average partial pressure of water vapor.	0	10000	Pa

* = Values are estimated

数据引用：

Thornton, P.E., M.M. Thornton, B.W. Mayer, Y. Wei, R. Devarakonda, R.S.Vose, and R.B. Cook. {YEAR}. Daymet: Daily Surface Weather Data on a 1-km Grid for North America, Version3. ORNL DAAC, Oak Ridge, Tennessee, USA

Other Citation Details - Thornton, P.E., M.M. Thornton, B.W. Mayer, Y. Wei, R. Devarakonda, R.S. Vose, and R.B. Cook. 2016. Daymet: Daily Surface Weather Data on a 1-km Grid for North America, Version 3. ORNL DAAC, Oak Ridge, Tennessee, USA. doi:10.3334/ORNLDAAC/1328

Daymet: Daily Surface Weather Data on a 1-km Grid for North America, Version 3, https://doi.org/10.3334/ORNLDAAC/1328

代码：

var dataset = ee.ImageCollection('NASA/ORNL/DAYMET_V3')
                  .filter(ee.Filter.date('2017-04-01', '2017-04-30'));
var maximumTemperature = dataset.select('tmax');
var maximumTemperatureVis = {
  min: -40.0,
  max: 30.0,
  palette: ['1621A2', 'white', 'cyan', 'green', 'yellow', 'orange', 'red'],
};
Map.setCenter(-110.21, 35.1, 4);
Map.addLayer(maximumTemperature, maximumTemperatureVis, 'Maximum Temperature');