The AVHRR Pathfinder Version 5.3 Sea Surface Temperature dataset (PFV53) is a collection of global, twice-daily 4km sea surface temperature data produced in a partnership by the NOAA National Oceanographic Data Center and the University of Miami's Rosenstiel School of Marine and Atmospheric Science. PFV53 was computed from data from the AVHRR instruments on board NOAA's polar orbiting satellite series using an entirely modernized system based on SeaDAS. PFV53 data are nearly 100% compliant with the GHRSST Data Specification Version 2.0 for L3C products and only deviate from that standard in that 'sses_bias', 'sses_standard_deviation', and 'sst_dtime' variables are empty and hence not included into EE assets. PFV53 data were collected through the operational periods of the NOAA-7 through NOAA-19 Polar Operational Environmental Satellites (POES), and are available from 1981 to 2014. Additional information is available at the [NOAA Pathfinder site] (NODC Pathfinder SST Data).
Additional band details can be found in the [Tech Specs] (https://data.nodc.noaa.gov/pathfinder/Version5.2/GDS_TechSpecs_v2.0.pdf) page.
These data were provided by GHRSST and the US NOAA National Centers for Environmental Information (NCEI). This project was supported in part by a grant from the NOAA Climate Data Record (CDR) Program for satellites.
AVHRR探路者5.3版海面温度数据集（PFV53）是由NOAA国家海洋学数据中心和迈阿密大学罗森斯蒂尔海洋与大气科学学院合作制作的全球每日两次的4公里海面温度数据集。PFV53是从NOAA极地轨道卫星系列上的AVHRR仪器的数据中计算出来的，使用的是基于SeaDAS的一个完全现代化的系统。PFV53数据几乎100%符合L3C产品的GHRSST数据规范2.0版，仅在 "ses_bias"、"ses_standard_deviation "和 "st_dtime "变量为空，因此不包括在EE资产中。PFV53数据是通过NOAA-7到NOAA-19极地运行环境卫星（POES）的运行期收集的，从1981年到2014年都有。其他信息可在[NOAA探路者网站]（https://www.nodc.noaa.gov/satellitedata/pathfinder4km53/）获得。
更多的波段细节可以在[技术规格]（https://data.nodc.noaa.gov/pathfinder/Version5.2/GDS_TechSpecs_v2.0.pdf）页面找到。
这些数据由GHRSST和美国NOAA国家环境信息中心（NCEI）提供。这个项目得到了NOAA气候数据记录（CDR）计划对卫星的部分支持。
Dataset Availability
1981-08-24T00:00:00 - 2020-12-30T00:00:00
Dataset Provider
Collection Snippet
ee.ImageCollection("NOAA/CDR/SST_PATHFINDER/V53")
Resolution
4000 meters
Bands Table
| Name | Description | Min | Max | Units | Scale | Offset | |
| sea_surface_temperature | Skin temperature of the ocean | K | 0.01 | 273.15 | |||
| dt_analysis | The difference between this SST and the previous day's. | K | 0.1 | 0 | |||
| wind_speed | These wind speeds were created by NCEP-DOE Atmospheric Model Intercomparison Project (AMIP-II) reanalysis (R-2) and represent winds at 10 metres above the sea surface. | m/s | 0 | 0 | |||
| sea_ice_fraction | Sea ice concentration data are taken from the EUMETSAT Ocean and Sea Ice Satellite Application Facility (OSISAF) [Global Daily Sea Ice Concentration Reprocessing Data Set accession.nodc.noaa.gov/0068294](https://data.cnra.ca.gov/dataset/global-daily-sea-ice-concentration-reprocessing-data-set-for-1978-2007-from-the-eumetsat-ocean-) when these data are available. The data are reprojected and interpolated from their original polar stereographic projection at 10km spatial resolution to the 4km Pathfinder Version 5.3 grid. When the OSISAF data are not available for both hemispheres on a given day, the sea ice concentration data are taken from the sea_ice_fraction variable found in the L4 GHRSST DailyOI SST product from NOAA/NCDC, and are interpolated from the 25km DailyOI grid to the 4km Pathfinder Version 5.3 grid. | 0.01 | 0 | ||||
| aerosol_dynamic_indicator | Aerosol optical thickness (100 KM) data are taken from the CLASS AERO100 products, which are created from AVHRR channel 1 optical thickness retrievals from AVHRR global area coverage (GAC) data. The aerosol optical thickness measurements are interpolated from their original 1 degree x 1 degree resolution to the 4km Pathfinder Version 5.3 grid. | 0.01 | 1.1 | ||||
| quality_level | Note, the native Pathfinder processing system returns quality levels ranging from 0 to 7 (7 is best quality; -1 represents missing data) and has been converted to the extent possible into the six levels required by the GDS2 (ranging from 0 to 5, where 5 is best). Below is the conversion table: - GDS2 required quality_level 5 = native Pathfinder quality level 7 == best_quality - GDS2 required quality_level 4 = native Pathfinder quality level 4-6 == acceptable_quality - GDS2 required quality_level 3 = native Pathfinder quality level 2-3 == low_quality - GDS2 required quality_level 2 = native Pathfinder quality level 1 == worst_quality - GDS2 required quality_level 1 = native Pathfinder quality level 0 = bad_data - GDS2 required quality_level 0 = native Pathfinder quality level -1 = missing_data The original Pathfinder quality level is recorded in the optional variable pathfinder_quality_level. | 0 | 5 | 0 | 0 | ||
| pathfinder_quality_level | The native Pathfinder processing system quality levels, ranging from 0 to 7, where 0 is worst and 7 is best. | 0 | 7 | 0 | 0 | ||
| l2p_flags | Used to specify the type of input SST data and pass through native flags from the input L2 SST data set. | 0 | 0 | ||||
| l2p_flags Bitmask |
|
||||||
影像属性：
| Name | Type | Description |
| aerosol_dynamic_indicator_offset | Double | Aerosol dynamic indicator offset |
| aerosol_dynamic_indicator_scale | Double | Aerosol dynamic indicator scale |
| date_created | Double | Date created |
| day_or_night | String | Day or night |
| dt_analysis_scale | Double | Dt analysis scale |
| orbit_node | String | Orbit node |
| platform | String | Platform |
| principal_day_for_collated_orbits | String | Principal day for collated orbits |
| principal_year_for_collated_orbits | Double | Principal year for collated orbits |
| sea_ice_fraction_scale | Double | Sea ice fraction scale |
| sea_surface_temperature_offset | Double | Sea surface temperature offset |
| sea_surface_temperature_scale | Double | Sea surface temperature scale |
| uuid | String | Universal unique identifier |
数据说明：
NOAA data, information, and products, regardless of the method of delivery, are not subject to copyright and carry no restrictions on their subsequent use by the public. Once obtained, they may be put to any lawful use. The forgoing data is in the public domain and is being provided without restriction on use and distribution. For more information see the 'constraints' section in [https://data.nodc.noaa.gov/cgi-bin/iso?id=gov.noaa.nodc:AVHRR_Pathfinder-NCEI-L3C-v5.3] (https://data.nodc.noaa.gov/cgi-bin/iso?id=gov.noaa.nodc:AVHRR_Pathfinder-NCEI-L3C-v5.3).
引用：
Baker-Yeboah, S., K. Saha, D. Zhang, K. S. Casey, R. Evans, and K. A. Kilpatrick (2016). 'Pathfinder Version 5.3 AVHRR Sea Surface Temperature Climate Data Record', Fall AGU 2016 Poster (manuscript in progress)
代码：
var dataset = ee.ImageCollection('NOAA/CDR/SST_PATHFINDER/V53') .filter(ee.Filter.date('2014-05-01', '2014-05-14')); var seaSurfaceTemperature = dataset.select('sea_surface_temperature'); var visParams = { min: 0.0, max: 2500.0, palette: [ '030d81', '0519ff', '05e8ff', '11ff01', 'fbff01', 'ff9901', 'ff0000', 'ad0000' ], }; Map.setCenter(-121.99, -2.11, 2); Map.addLayer(seaSurfaceTemperature, visParams, 'Sea Surface Temperature');
