• Cada estudante está encarregado de criar e manter a sua própria página. Para acessar essas páginas clique aqui. A partir de 2024, os estudos dirigidos de cada estudante aparecem disponibilizados numa tabela por tipo de ferramenta e atividade numa tabela com o seguinte formato:

      Ferramenta Atividade
      Figshare Clima Pira Minha Pesquisa
      Posit
      Colab
      Dokuwiki
      Github
      Para desenvolvimento dos estudos dirigidos: Posit refere-se ao uso da plataforma RStudio Cloud; "Colab" ao uso da plataforma Google Colab; "Dokuwiki" apresenta o respectivo estudo dirigido numa página dokuwiki; e Github dá acesso à respectiva pasta do estudante no github.

    • Sentinel-2 is a wide-swath, high-resolution, multi-spectral imaging mission supporting Copernicus Land Monitoring studies, including the monitoring of vegetation, soil, and water cover, as well as observation of inland waterways and coastal areas.

      The Sentinel-2 data contain 13 UINT16 spectral bands representing TOA reflectance scaled by 10000. See the Sentinel-2 User Handbook for details. In addition, three QA bands are present and one (QA60) is a bitmask band with cloud mask information. For more details, see the full explanation of how cloud masks are computed.

      Each Sentinel-2 product (zip archive) may contain multiple granules. Each granule becomes a separate Earth Engine asset. EE asset ids for Sentinel-2 assets have the following format: COPERNICUS/S2/20151128T002653_20151128T102149_T56MNN. Here the first numeric part represents the sensing date and time, the second numeric part represents the product generation date and time, and the final 6-character string is a unique granule identifier indicating its UTM grid reference (see MGRS).

      The Level-2 data produced by ESA can be found in the collection COPERNICUS/S2_SR.

      Clouds can be mostly removed by using COPERNICUS/S2_CLOUD_PROBABILITY. See this tutorial explaining how to apply the cloud mask.

      For more details on Sentinel-2 radiometric resolution, see this page.

      Provider: European Union/ESA/Copernicus

      Revisit Interval
      5 days

      Bands

      NameDescription
      B1

      Aerosols

      B2

      Blue

      B3

      Green

      B4

      Red

      B5

      Red Edge 1

      B6

      Red Edge 2

      B7

      Red Edge 3

      B8

      NIR

      B8A

      Red Edge 4

      B9

      Water vapor

      B10

      Cirrus

      B11

      SWIR 1

      B12

      SWIR 2

      QA10

      Always empty

      QA20

      Always empty

      QA60

      Cloud mask

      Bitmask for QA60
      • Bit 10: Opaque clouds
        • 0: No opaque clouds
        • 1: Opaque clouds present
      • Bit 11: Cirrus clouds
        • 0: No cirrus clouds
        • 1: Cirrus clouds present

      Image Properties

      NameTypeDescription
      CLOUDY_PIXEL_PERCENTAGEDOUBLE

      Granule-specific cloudy pixel percentage taken from the original metadata

      CLOUD_COVERAGE_ASSESSMENTDOUBLE

      Cloudy pixel percentage for the whole archive that contains this granule. Taken from the original metadata

      DATASTRIP_IDSTRING

      Unique identifier of the datastrip Product Data Item (PDI)

      DATATAKE_IDENTIFIERSTRING

      Uniquely identifies a given Datatake. The ID contains the Sentinel-2 satellite, start date and time, absolute orbit number, and processing baseline.

      DATATAKE_TYPESTRING

      MSI operation mode

      DEGRADED_MSI_DATA_PERCENTAGEDOUBLE

      Percentage of degraded MSI and ancillary data

      FORMAT_CORRECTNESSSTRING

      Synthesis of the On-Line Quality Control (OLQC) checks performed at granule (Product_Syntax) and data strip (Product Syntax and DS_Consistency) levels

      GENERAL_QUALITYSTRING

      Synthesis of the OLQC checks performed at the data strip level (Relative_Orbit_Number)

      GENERATION_TIMEDOUBLE

      Product generation time

      GEOMETRIC_QUALITYSTRING

      Synthesis of the OLQC checks performed at the data strip level (Attitude_Quality_Indicator)

      GRANULE_IDSTRING

      Unique identifier of the granule PDI (PDI_ID)

      MEAN_INCIDENCE_AZIMUTH_ANGLE_B1DOUBLE

      Mean value containing viewing incidence azimuth angle average for band B1 and for all detectors

      MEAN_INCIDENCE_AZIMUTH_ANGLE_B2DOUBLE

      Mean value containing viewing incidence azimuth angle average for band B2 and for all detectors

      MEAN_INCIDENCE_AZIMUTH_ANGLE_B3DOUBLE

      Mean value containing viewing incidence azimuth angle average for band B3 and for all detectors

      MEAN_INCIDENCE_AZIMUTH_ANGLE_B4DOUBLE

      Mean value containing viewing incidence azimuth angle average for band B4 and for all detectors

      MEAN_INCIDENCE_AZIMUTH_ANGLE_B5DOUBLE

      Mean value containing viewing incidence azimuth angle average for band B5 and for all detectors

      MEAN_INCIDENCE_AZIMUTH_ANGLE_B6DOUBLE

      Mean value containing viewing incidence azimuth angle average for band B6 and for all detectors

      MEAN_INCIDENCE_AZIMUTH_ANGLE_B7DOUBLE

      Mean value containing viewing incidence azimuth angle average for band B7 and for all detectors

      MEAN_INCIDENCE_AZIMUTH_ANGLE_B8DOUBLE

      Mean value containing viewing incidence azimuth angle average for band B8 and for all detectors

      MEAN_INCIDENCE_AZIMUTH_ANGLE_B8ADOUBLE

      Mean value containing viewing incidence azimuth angle average for band B8a and for all detectors

      MEAN_INCIDENCE_AZIMUTH_ANGLE_B9DOUBLE

      Mean value containing viewing incidence azimuth angle average for band B9 and for all detectors

      MEAN_INCIDENCE_AZIMUTH_ANGLE_B10DOUBLE

      Mean value containing viewing incidence azimuth angle average for band B10 and for all detectors

      MEAN_INCIDENCE_AZIMUTH_ANGLE_B11DOUBLE

      Mean value containing viewing incidence azimuth angle average for band B11 and for all detectors

      MEAN_INCIDENCE_AZIMUTH_ANGLE_B12DOUBLE

      Mean value containing viewing incidence azimuth angle average for band B12 and for all detectors

      MEAN_INCIDENCE_ZENITH_ANGLE_B1DOUBLE

      Mean value containing viewing incidence zenith angle average for band B1 and for all detectors

      MEAN_INCIDENCE_ZENITH_ANGLE_B2DOUBLE

      Mean value containing viewing incidence zenith angle average for band B2 and for all detectors

      MEAN_INCIDENCE_ZENITH_ANGLE_B3DOUBLE

      Mean value containing viewing incidence zenith angle average for band B3 and for all detectors

      MEAN_INCIDENCE_ZENITH_ANGLE_B4DOUBLE

      Mean value containing viewing incidence zenith angle average for band B4 and for all detectors

      MEAN_INCIDENCE_ZENITH_ANGLE_B5DOUBLE

      Mean value containing viewing incidence zenith angle average for band B5 and for all detectors

      MEAN_INCIDENCE_ZENITH_ANGLE_B6DOUBLE

      Mean value containing viewing incidence zenith angle average for band B6 and for all detectors

      MEAN_INCIDENCE_ZENITH_ANGLE_B7DOUBLE

      Mean value containing viewing incidence zenith angle average for band B7 and for all detectors

      MEAN_INCIDENCE_ZENITH_ANGLE_B8DOUBLE

      Mean value containing viewing incidence zenith angle average for band B8 and for all detectors

      MEAN_INCIDENCE_ZENITH_ANGLE_B8ADOUBLE

      Mean value containing viewing incidence zenith angle average for band B8a and for all detectors

      MEAN_INCIDENCE_ZENITH_ANGLE_B9DOUBLE

      Mean value containing viewing incidence zenith angle average for band B9 and for all detectors

      MEAN_INCIDENCE_ZENITH_ANGLE_B10DOUBLE

      Mean value containing viewing incidence zenith angle average for band B10 and for all detectors

      MEAN_INCIDENCE_ZENITH_ANGLE_B11DOUBLE

      Mean value containing viewing incidence zenith angle average for band B11 and for all detectors

      MEAN_INCIDENCE_ZENITH_ANGLE_B12DOUBLE

      Mean value containing viewing incidence zenith angle average for band B12 and for all detectors

      MEAN_SOLAR_AZIMUTH_ANGLEDOUBLE

      Mean value containing sun azimuth angle average for all bands and detectors

      MEAN_SOLAR_ZENITH_ANGLEDOUBLE

      Mean value containing sun zenith angle average for all bands and detectors

      MGRS_TILESTRING

      US-Military Grid Reference System (MGRS) tile

      PROCESSING_BASELINESTRING

      Configuration baseline used at the time of the product generation in terms of processor software version and major Ground Image Processing Parameters (GIPP) version

      PRODUCT_IDSTRING

      The full id of the original Sentinel-2 product

      RADIOMETRIC_QUALITYSTRING

      Based on the OLQC reports contained in the Datastrips/QI_DATA with RADIOMETRIC_QUALITY checklist name

      REFLECTANCE_CONVERSION_CORRECTIONDOUBLE

      Earth-Sun distance correction factor

      SENSING_ORBIT_DIRECTIONSTRING

      Imaging orbit direction

      SENSING_ORBIT_NUMBERDOUBLE

      Imaging orbit number

      SENSOR_QUALITYSTRING

      Synthesis of the OLQC checks performed at granule (Missing_Lines, Corrupted_ISP, and Sensing_Time) and datastrip (Degraded_SAD and Datation_Model) levels

      SOLAR_IRRADIANCE_B1DOUBLE

      Mean solar exoatmospheric irradiance for band B1

      SOLAR_IRRADIANCE_B2DOUBLE

      Mean solar exoatmospheric irradiance for band B2

      SOLAR_IRRADIANCE_B3DOUBLE

      Mean solar exoatmospheric irradiance for band B3

      SOLAR_IRRADIANCE_B4DOUBLE

      Mean solar exoatmospheric irradiance for band B4

      SOLAR_IRRADIANCE_B5DOUBLE

      Mean solar exoatmospheric irradiance for band B5

      SOLAR_IRRADIANCE_B6DOUBLE

      Mean solar exoatmospheric irradiance for band B6

      SOLAR_IRRADIANCE_B7DOUBLE

      Mean solar exoatmospheric irradiance for band B7

      SOLAR_IRRADIANCE_B8DOUBLE

      Mean solar exoatmospheric irradiance for band B8

      SOLAR_IRRADIANCE_B8ADOUBLE

      Mean solar exoatmospheric irradiance for band B8a

      SOLAR_IRRADIANCE_B9DOUBLE

      Mean solar exoatmospheric irradiance for band B9

      SOLAR_IRRADIANCE_B10DOUBLE

      Mean solar exoatmospheric irradiance for band B10

      SOLAR_IRRADIANCE_B11DOUBLE

      Mean solar exoatmospheric irradiance for band B11

      SOLAR_IRRADIANCE_B12DOUBLE

      Mean solar exoatmospheric irradiance for band B12

      SPACECRAFT_NAMESTRING

      Sentinel-2 spacecraft name: Sentinel-2A, Sentinel-2B

      Terms of Use

      The use of Sentinel data is governed by the Copernicus Sentinel Data Terms and Conditions.

◄Aula 5.2
►Grupos e Projetos