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Newsletter Nov. 2023
CEOS Cal/Val Portal - Newsletter November 2023
Please download the CEOS Cal/Val Portal Newsletter - November 2023. This Newsletter describes the updated content and functionality of the CEOS Cal/Val Portal.
SRIX4VEG -2nd Workshop
The Surface Reflectance Inter-comparison eXercise for Vegetation (SRIX4VEG) - 2st Workshop
We are pleased to announce the second workshop for the Surface Reflectance Intercomparison eXercise for Vegetation (SRIX4Veg), which will take place at ESA ESRIN on Thursday 23rd and Friday 24th November 2023 (with a hybrid option available for those that cannot travel). SRIX4Veg represents a joint effort between ESA, USGS, CSIRO, DLR, ASI and Geoscience Australia to test user-based differences in UAV-based surface reflectance fiducial reference measurements used for validation of surface reflectance satellite products, and to ensure consensus on UAV-based surface reflectance validation good practices protocol. This activity is endorsed by the Committee on Earth Observation Satellites (CEOS) and conducted in the framework of the ESA-funded FRM4Veg initiative.
The aim of the second workshop is twofold:
The first day will provide a recap of the activity, results from the experiments and lessons learnt. The second day will be dedicated to shaping the good practice protocol through discussions and feedback. Detail agenda will be released closer to the time.
Please register your interest for the workshop using this Link.
Microwave Sensors Subgroup - Updates
Microwave Sensors Subgroup - Updates
Please visit the new pages of the Microwave Sensor Subgroup including updated information and new contents: MSSG
SALVAL tool webpage
SALVAL tool webpage
Please visit the SALVAL tool webpage at the following link: SALVAL home
The overall aim of SALVAL is to bring together validation good practices protocols, ground data and satellite products to provide users with traceable validation results allowing reaching CEOS WGCV LPV validation Stage 4.
Contact (info@salval.eolab.es) in case of technical issues or if you want to make contribution to this scientific community.
QA4SM Evolution in FRM4SM
QA4SM Evolution in FRM4SM presented at sixth Soil Moisture Validation Workshop
The Quality Assurance for Soil Moisture (QA4SM) service aims to provide a methodological reference and an application tool for Soil Moisture (SM) validation studies at the disposal of the users and producers community. QA4SM was originally created with support of the Austrian Space Application Program. It is further evolved in the ESA Fiducial Reference Measurements for Soil Moisture (FRM4SM) project, with the goal to make use of FRM-compliant reference data and better characterize errors in satellite SM measurements. This first evolution of the QA4SM service is now presented at the sixth Soil Moisture Validation Workshop that is held in Perugia, Italy, from 7 to 9 June 2022.
Please visit the webpage at the following link for further details: QA4SM Evolution in FRM4SM
CEOS WGCV LPV DIRECT V2.1 database
CEOS WGCV LPV DIRECT V2.1 database
The CEOS WGCV LPV DIRECT V2.1 database constitutes a major effort of the international community to provide ground reference for the validation of LAI and FAPAR ECVs.
The database is now available for download from the CEOS Cal/Val Portal, see details at: LPV DIRECT V2.1
TSIS-1 HSRS solar irradiance reference spectrum
TSIS-1 HSRS solar irradiance reference spectrum
CEOS WGCV recommends the Total and Spectral Solar Irradiance Sensor-1 (TSIS-1) Hybrid Solar Reference Spectrum (HSRS) as the new solar irradiance reference spectrum. This statement has been agreed during the latest WGCV#50 Plenary Meeting.
Details for TSIS-1 HSRS are available at: https://lasp.colorado.edu/lisird/data/tsis1_hsrs
SRIX4VEG 1st Workshop
The Surface Reflectance Inter-comparison eXercise for Vegetation (SRIX4VEG) - 1st Workshop
We would like to invite you to take part in an upcoming workshop for the WGCV Surface Reflectance Inter-comparison eXercise for Vegetation (SRIX4Veg) activity. The 1st SRIX4VEG workshop will be held online on Monday 28th March 2022, starting at 09:00 AM (CET). Please visit https://frm4veg.org/srix4veg/workshop-1/ for details and registration.
SRIX4Veg represents a joint effort between ESA, USGS, CSIRO and Geoscience Australia to test user-based differences in UAV-based surface reflectance fiducial reference measurements used for validation of surface reflectance satellite products, and to ensure consensus on UAV-based surface reflectance validation good practices protocol. This activity is conducted in the framework of the ESA-funded FRM4Veg (www.frm4veg.org) initiative.
The main objectives of SRIX4Veg are:
Many thanks,
the SRIX4Veg organisation committee
ACIX III and CMIX II 1st WS
Atmospheric Correction Inter-comparison eXercise (ACIX-III) and Cloud Masking Inter-comparison eXercise (CMIX-II)
We would like to invite you to participate to the next Atmospheric Correction Inter-comparison eXercise (ACIX-III) and/or Cloud Masking Inter-comparison eXercise (CMIX-II).
The exercises are collaborative activities of ESA and NASA that initiated in 2016 in the frame of CEOS WGCV. ACIX has been already implemented twice on multispectral Copernicus Sentinel-2 and Landsat 8 imagery. More information on the latest analysis and the results can be found in the dedicated web pages for the -Land and -Aqua focused part of the exercise. In parallel with ACIXs, CMIX ran over specific areas for which there were reference data available. Similarly to ACIXs, the focus of the first CMIX was on Sentinel-2 (EC/ESA) and Landsat 8 (NASA/USGS) imagery. More information on the first CMIX implementation can be found on https://calvalportal.ceos.org/cmix.
The 1st WS of ACIX-III and CMIX-II will be held in ESA/ESRIN (Frascati, Italy) on 20-21 June 2022.
Participation To ACIXs And CMIX Is Open To All The Scientists Who:
For more information on the exercises and the registration for participation, you can find here.
Many thanks,
the ACIX/CMIX organisation committee
CEOS SAR Cal/Val WS 2021
CEOS SAR Cal/Val Workshop 2021
The Committee on Earth Observation Satellites (CEOS) Working Group on Calibration and Validation (WGCV), SAR Subgroup, Synthetic Aperture Radar Workshop 2021 (CEOS SAR 2021) will be held virtually in November 2-4, 2021.
Please visit the dedicated page for further details.
SITSCOS WS 2019
SI-Traceable Space-based Climate Observing System Workshop (SITSCOS) 9-11 Sep 2019, NPL, London UK
The SI-Traceable Space-based Climate Observing System Workshop was hosted by the National Physical Laboratory (NPL) in London, UK, and sponsored by the UK Space Agency. The workshop was organized under the auspices of the Global Space-based Inter-Calibration System (GSICS) and the Committee on Earth Observation Satellites - Working Group on Calibration and Validation (CEOS-WGCV).
Please visit the dedicated webpage to download the Workshop Report and other relevant materials.
CEOS SAR Subgroup
The CEOS SAR Subgroup website has been migrated from http://sarcv.ceos.org to the CEOS Cal/Val Portal. Please enjoy navigation at: http://calvalportal.ceos.org/sar_subgroup
To access the dedicated SAR Subgroup pages (Discussions and Doc Repository) you have to be registered and signed-in at the CEOS Cal/Val Portal. If you wish to be part of the SAR Subgroup please contact the group's Chairman
Supersites & Biomass Validation Workshop
Supersites and Biomass Validation Workshop
The Workshop, hosted by CSIRO, was held in Canberra, Australia in the week of 2nd March 2020.
All the presentations, as well as, the meeting Agenda and Minutes are available here
Terms and Definitions Wiki
Terms and Definitions Wiki: Your feedback is welcome
The Terms and Definitions Wiki is now accessible, with the following differences:
1. Guests can view all the definitions;
2. Site members (i.e. registered users) can view, vote and provide comments;
3. Members of Terms and Definitions group can, in addition, edit the definitions.
Please note that it is work in progress and your feedback is welcome!
Newsletter Dec. 2019
Please download the CEOS Cal/Val Portal Newsletter - December 2019
This Newsletter describes the updated content and functionality of the
CEOS Cal/Val Portal.
VH-RODA & CEOS WGCV SAR 2019
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CEOS WMO-GSICS Workshop
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Tech. notes on SAR geometric cal.
As part of the FRM4SAR project, DLR (Deutsches Zentrum für Luft- und Raumfahrt e.V.) and UZH (University of Zurich) have written two documents addressing the topic of the geometric calibration for SAR:
They are available for download at the following link
Update of the OLIVE DIRECT db
DIRECT 2.0 ground database is now made available by the Land Product Validation Subgroup LPV
DIRECT 2.0 filters forest sites with no understory and expands the time serie of up to 2017 with the inclusion of more than 60 new sites (coming from FP7 ImagineS, ESA and EOLAB campaigns). DIRECT 2.0 contains 140 sites and 242 samples (2000-2017)
Please download the database from the following link : DIRECT 2.0
For further details see on the OLIVE tool
WS on Radiometric Calib. for Eu. Opt. Missions
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