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Taal volcano blanketed by ash

23 January 2020

The Philippines' Taal volcano erupted on 12 January 2020 – spewing an ash plume approximately 15 km high and forcing large-scale evacuations in the nearby area.

This almost cloud-free image was captured on 23 January at 02:20 GMT (10:20 local time) by the Copernicus Sentinel-2 mission, and shows the island, in the centre of the image, completely covered in a thick layer of ash.

Taal volcano

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Earth Topics (Applications)
  • Land
  • vegetation

    Instrument type
    Mission
    Operators:
    Planet
    Date of Launch:
    21 November 2013
    Mission Status:
    Operating nominally
    Orbit type:
    Sun-synchronous
    Swath Width:
    8 km at nadir (SkySat-1 to -2)
    6.6 km at nadir (SkySat-3 to -13)
    SkySat Full Archive and New Tasking
    SkySat
    (2116) recent views
    Last update: 23 January 2020

    SkySat is a constellation composed 15 optical satellites operated by Planet.

    The available SkySat product suite includes the SkySat Basic Scene Product (L2B), the SkySat Orthoscene Product (L3B) and the SkySat OrthoCollect Product (L3B) in different product types, all generated from both archive and new tasking imagery.

    The SkySat Basic Scene product is uncalibrated and in a raw digital number format, not corrected for any geometric distortions inherent in the imaging process and not orthorectified. Rational Polynomial Coefficients (RPCs) are provided to enable orthorectification by the user.

    The SkySat Basic Scene Product is available as "analytic" (full 12-bit B,G,R,NIR data) and "panchromatic" (12-bit PAN data) product types.

    The SkySat Ortho Scene Product is sensor- and geometrically-corrected (by using DEMs with a post spacing of between 30 and 90 meters) and is projected to a cartographic map projection; the accuracy of the product will vary from region to region based on available GCPs. Different product types are available

    • The SkySat Visual Ortho Scene product is orthorectified, pansharpened, and color-corrected (using a color curve) 3-band RGB Imagery in 8-bit format only.
    • The SkySat Analytic Ortho Scene DN product is orthorectified, multispectral BGRN, uncalibrated, digital number imagery product. The product has been processed to remove distortions caused by terrain; It eliminates the perspective effect on the ground (not on buildings), restoring the geometry of a vertical shot. Transformation to at-sensor radiance is not included
    • The SkySat Analytic Ortho Scenes are calibrated multispectral imagery products with radiometric corrections applied to correct for any sensor artifacts and transformation to top-of-atmosphere radiance
    • The SkySat Pansharpened Multispectral Scene product is orthorectified, pansharpened 4-band BGRN Imagery
    • The SkySat Panchromatic DN Ortho Scene product is orthorectified, panchromatic, uncalibrated, digital number imagery product. It has a finer GSD than the Analytic Product. Transformation to at-sensor radiance is not included.

     

    Basic

    Visual Ortho

    Pansharpened Multispectral Ortho

    Analytic DN Ortho

    Panchromatic Ortho

    Analytic Ortho

    Product Components and Format

    ● Image File – GeoTIFF format
    ● Metadata File – JSON format
    ● Rational Polynomial Coefficients – Text File
    ● UDM File – GeoTIFF format

    ● Image File – GeoTIFF format
    ● Metadata File – JSON format
    ● Rational Polynomial Coefficients – Text File
    ● UDM File – GeoTIFF format

    Bands

    4-band Analytic DN Image (Blue, Green, Red, NIR); 1-band Panchromatic DN Image (Pan)

    Visual: 3-band Pansharpened Image (PS Red, PS Green, PS Blue)

    Multispectral: 4-band Pansharpened Image (PS Blue, PS Green, PS Red, PS NIR)

    4-band Analytic DN Image (B, G, R, N)

    1-band Panchromatic Image

    4-band Analytic Image (B, G, R, N)

    Ground Sampling Distance (nadir)

    [SkySat-1, SkySat-2]
    ● Panchromatic: 0.86m
    ● Multispectral: 1.0m
    [SkySat-3 - SkySat-13]
    ● Panchromatic: 0.72m
    ● Multispectral: 1.0m

    ● Multispectral: 1.0 m
    ● Panchromatic: 0.72 m

    ● Multispectral: 1.0 m
    ● Panchromatic: 0.72 m

    1.0 m

    0.72 m

    1.0 m

    Projection

    N/A

    UTM WGS84

    accuracy

    <50m RMSE

    <10 m RMSE

    radiometric accuracy: +/- 5% Relative accuracy at < 10 degrees off-nadir angle

    The SkySat Consolidated Product are Ortho Collect product created by composing ~60 SkySat Ortho Scenes (Visual, Pansharpened Multispectral, Analytic DN, Panchromatic DN) along an imaging strip into segments
    Data Set Specifications
    Spatial coverage: 90 N, 90 S, 180 W, 180 E
    Temporal coverage: 2013-11-13 - present
    Processing level
    Level 2b

    Level 3

    How to access this data

    Data are available after project proposal acceptance.

    Terms & Conditions applicable
    Utilisation of this data is subject to the Terms and Conditions for ESA's Third Party Missions scheme
    Resources

    HTML

    Planet products

    HTML

    Planet imagery Product Specifications

    HTML

    Planet Explorer

    PDF

    Planet Explorer User Guide

    Earth Topics (Applications)
  • Land
  • vegetation

    Instrument type
    Mission
    Operators:
    Planet
    Date of Launch:
    22 June 2016
    Mission Status:
    Operating nominally
    Orbit type:
    Sun-synchronous
    PlanetScope Full Archive
    PlanetScope
    (3154) recent views
    Last update: 23 January 2020

    PlanetScope is a constellation composed by more than 120 optical satellites (also named Doves) operated by Planet.

    The PlanetScope Level 1B Basic Scene and Level 3B Ortho Scene full archive products are available as part of Planet imagery offer. Moreover, thanks to the daily global coverage of the constellation, new acquired data can be requested and used for monitoring purpose.

    The PlanetScope Basic Scene product is a Scaled Top of Atmosphere Radiance (at sensor) and sensor corrected product, without correction for any geometric distortions inherent in the imaging processes and is not mapped to a cartographic projection. The imagery data is accompanied by Rational Polynomial Coefficients (RPCs) to enable orthorectification by the user.

    This kind of product is designed for users with advanced image processing and geometric correction capabilities.

    The PlanetScope Ortho Scene product is radiometrically-, sensor- and geometrically- corrected and is projected to a cartographic map projection. The geometric correction uses fine Digital Elevation Models (DEMs) with a post spacing of between 30 and 90 meters.

    • PlanetScope Visual Ortho Scene product is orthorectified and color-corrected (using a colour curve) 3-band RGB Imagery. This correction attempts to optimize colors as seen by the human eye providing images as they would look if viewed from the perspective of the satellite
    • PlanetScope Analytic Ortho Scene product is orthorectified, 4-band BGRN Imagery with geometric, radiometric and atmospheric correction. This data is optimal for value-added image processing such as land cover classifications.
     

    basic

    ortho visual

    ortho analytic

     

    Product Components and Format

    • Image File – GeoTIFF format
    • Metadata File – XML format
    • Rational Polynomial Coefficients - XML format
    • Thumbnail File – GeoTIFF format
    • Unusable Data Mask (UDM) File – GeoTIFF format
    • Usable Data Mask (UDM2) File - GeoTIFF format
    • Image File – GeoTIFF format
    • Metadata File – XML format
    • Thumbnail File – GeoTIFF format
    • Unusable Data Mask (UDM) file – GeoTIFF format
    • Usable Data Mask (UDM2) file – GeoTIFF format

    Bands

    3-band natural color (red, green, blue) or
    4-band multispectral image (blue, green, red, near-infrared)

    3-band natural color (red, green, blue)

    3-band multispectral image (red, green, blue)
    4-band multispectral image (blue, green, red, near-infrared)

     

    Ground Sampling Distance (nadir)

    3.7 m (average at reference altitude 475 km)

    3.7 m (average at reference altitude 475 km)

    Projection

    N/A

    UTM WGS84

    accuracy

    Less than 10 m RMSE

    Less than 10 m RMSE

     

    Data Set Specifications
    Spatial coverage: 80 N, 80 S, 180 W, 180 E
    Temporal coverage: 2016-06-22 - Present
    Processing level
    Level 1b

    Level 3

    How to access this data

    Data are available after project proposal acceptance.

    Terms & Conditions applicable
    Utilisation of this data is subject to the Terms and Conditions for ESA's Third Party Missions scheme
    Resources

    HTML

    Planet products

    PDF

    Planet Imagery Product Specifications

    HTML

    Planet Explorer

    PDF

    Planet Explorer User Guide

    Web Content Image

    EGU General Assembly 2020

    3 - 8 May 2020

    The European Geoscience Union (EGU) General Assembly 2020 will take place in Vienna, Austria, from 3 to 8 May 2020, bringing together geoscientists from all over the world to one meeting covering all disciplines of the Earth, planetary, and space sciences.


    The EGU aims to provide a forum where scientists, especially early career researchers, can present their work and discuss their ideas with experts in all fields of geoscience.


    Early registration deadline: 31 March 2020


    Web Content Image

    MicroRad 2020

    23 - 27 March 2020

    The 16th Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment (MicroRad 2020) will be held from 23 to 27 March 2020 at the Santa Apollonia Auditorium in Florence, Italy. The event is organised by the Centro di Telerilevamento a Microonde (CETEM) and the Istituto di Fisica Applicata (IFAC-CNR).

     

    Participation in MicroRad2020 meeting is open to all individuals interested in or working in the fields of passive microwave remote sensing; the microwave radiometry community is invited to present new research results and instrument designs in the field of remote sensing of land, ocean, cryosphere and atmosphere.

     

    Thanks to an ESA sponsorship, travel support can be provided to a selection of 10 students, to encourage the participation of young scientists to the event. In order to be eligible for receiving the support, students must submit an abstract to the conference as first author. Further details on the MicroRad2020 website.

     

    Registration will open on 3 February 2020


    Web Content Image

    Aeolus Cal/Val Science Workshop

    16 - 20 March 2020

    The Aeolus Cal/Val and Science workshop is an ESA organized workshop and will be held in Darmstadt, Germany from 16 -20 March 2020, and is kindly co-hosted by EUMETSAT and the German Aerospace Center (DLR).

     

    The yearly Aeolus Cal/Val and Science workshops are the main forum for reporting on mission status and product evolution, for informing and coordinating mission Cal/Val activities, as well as reporting on results on NWP impact assessments and further scientific exploitation of the Aeolus data.

     

    At the 2019 Aeolus CAL/VAL and Science workshop, first in-orbit results from the Aeolus CAL/VAL and science teams were presented. At the 2020 workshop, further and more consolidated results from these teams will be presented, as well as work done by new scientific teams who have joined the Aeolus CAL/VAL and science efforts in 2019.

     

    Abstract submission deadline: 27 January 2020


    Web Content Image
    Crimean Bridge, Crimea

    The Crimean Bridge is shown in this Copernicus Sentinel-2 image comparison. The images show the bridge before and after it was engineered to add a rail line.

    Read more

    Dragon 5 Cooperation Call for proposals

    22 January 2020

    ESA is pleased to announce, jointly with the National Remote Sensing Center of China (NRSCC) under the Ministry of Science and Technology (MOST), the release of the Dragon 5 Cooperation Call for proposals.

    The Call will provide opportunities for scientists from ESA participating states and P.R. China to cooperate in the exploitation of EO Data covering P.R. China and other areas of interest for science and application development.

    The main objectives of this announcement of opportunity are:

    • Promote the exploitation of Copernicus Sentinels, ESA, ESA TPM and Chinese EO data:
      • for science and application development
    • Stimulate scientific exchange:
      • by the formation of joint Sino-European teams
      • academic exchanges particularly Young Scientists
    • Publish co-authored results:
      • in ESA and NRSCC joint results publication (2022) & (2024)
      • in leading scientific journals
    • Provide training to young European and Chinese scientists.

    Learn more about this opportunity and submit your proposal on the dedicated webpage.

    Submission is open until 28 February 2020.


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