Difference between revisions of "USER REQUIREMENTS"

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(Created page with " TIMELINESS A key element for the GFM service is the timeliness of the product generation. After reviewing the requirements of the tender and considering the practical exp...")
 
 
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[[GFMS | [Home]]]
  
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TIMELINESS
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='''Timeliness'''=
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A key element for the GFM service is the timeliness of the product generation. After reviewing the requirements of the tender and considering the practical experience of the whole team of the expert flood monitoring alliance adequate measures to ensure a guaranteed product timeline of <= 8 hours are proposed for all Sentinel-1 GRD scenes becoming available on the ESA data hubs within < 5 hours.
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The key element for the [[INTRODUCTION | '''GFM''']] is the timeliness of the product generation. <br>
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 P.88 metodi per rispettare la timeliness p. 88 In summary, product timeliness of less than 8 hours will be ensured via the following measures:
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The practical experience of the whole team of the expert flood monitoring alliance has been put at service to guarantee product timeliness '''less or equal to 8 hours''' for all [https://sentinels.copernicus.eu/web/sentinel/missions/sentinel-1 Sentinel-1] GRD scenes becoming available on the [https://http://www.esa.int/ ESA] data hubs within 5 hours. <br>
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Redundant Sentinel data access via multi access point data downloads and parallelisation of downloads for an optimised bandwidth utilisation via the HubWatcher software.  
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This paramount requirement is ensured via the following measures:
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* a redundant [https://sentinels.copernicus.eu/ Sentinel] data access via multi access point data downloads and parallelization of downloads for an optimised bandwidth utilisation via the HubWatcher software.
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* the automatic retrieval of [https://sentinels.copernicus.eu/web/sentinel/missions/sentinel-1 Sentinel-1] GRD data with the HubWatcher in 96.3 minutes (on average) following [https://http://www.esa.int/ ESA] publication for general availability.
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* the Pre-processing of [https://sentinels.copernicus.eu/web/sentinel/missions/sentinel-1 Sentinel-1] GRD data products and inclusion into the data cube format within 10-20 minutes per scene.
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* the fast data access to the data cube with IO speeds of 15GiB/s or 120Gbps.
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* the generation of the ensemble global flood monitoring product using the three parallel algorithms consumes up to 30 minutes, with the final flood extent maps and uncertainty values being calculated within a matter of seconds.
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* the total lead time of the global flood monitoring product amounts to 60 minutes to complete the entire operational NRT workflow from acquisition to delivery.
  
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• The automatic retrieval of Sentinel-1 GRD data with the HubWatcher in 96.3 minutes on average following ESA publication for general availability. There is already understanding of the requisite steps to be taken to further decrease this value to provide available within 60 minutes.
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. < 8-hour lag between satellite data acquisition and map production
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• Pre-processing of Sentinel-1 GRD data products and insertion into the data cube format within 10-20 minutes per scene.
 
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• Fast data access to the data cube with IO speeds of 15GiB/s or 120Gbps. This will further increase with the proposed high-speed replicated storage.
 
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• The generation of the ensemble global flood monitoring product using the three parallel algorithms consumes up to 30 minutes, with the final flood extent maps and uncertainly values being calculated within a matter of seconds.
 
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• The total lead time of the global flood monitoring product can be given with 60 minutes to complete the entire operational NRT workflow from acquisition to delivery.
 
  
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our proposed GFM system will deliver 90 % of the data within a total time of LESS THAN 8 HOURS FROM S1 ACQUISITION
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='''Service availability'''=
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Guaranteed service availability is facilitated through [https://eodc.eu/ EODC]’s [https://sentinels.copernicus.eu/web/sentinel/missions/sentinel-1 Sentinel-1] processing operations expertise, begun in 2014, which is regularly being assessed by the [https://http://www.esa.int/ ESA] mission reports. These ''lessons learned'' have been used to implement a completely independent IT infrastructure for the [https://emergency.copernicus.eu/ CEMS] [[INTRODUCTION | '''GFM''']] system operations.
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The operations is also organized through redundant '''24/7 production coordinator staff availabilities''', such that a '''99% service availability''' is guaranteed.
  
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. available 24/7/365
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. > 99% service availability
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. global coverage
  
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5.1.2 Guaranteed service availability is facilitated through EODC’s 6 year old Sentinel-1 processing operations expertise, which is regularly being assessed by the ESA mission reports, and which lessons learned will be used to implement a completely independent IT infrastructure for the CEMS GFM system operations (section 2.3); the operations will by also be organized through redundant 24/7 production coordinator staff availabilities, such that we can guarantee a 99% SERVICE AVAILABILITY (section 2.3);
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='''Product accuracy'''=
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According to the general product specifications, the thematic accuracy of the Sentinel-1 observed flood and water extent products is required to exceed a target '''CSI score of 70-80%'''. <br>
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[[INTRODUCTION | '''GFM''']] on multiple testcases has proven to achieve an overall accuracy between the different products that is higher than 94 %. <br>
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Most importantly, the CSI scores range from 0.72 to 0.86 for both the [[S-1_Observed_Flood_Extent | Sentinel-1 observed flood]] and [[S-1_Observed_Water_Extent | water extent products]]. <br>
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Due to the highly advanced methods and quality of input data, a flood delineation and water mask accuracy of >90% is then guaranteed.
  
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. 90%+ accuracy of flood mapping
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5.1.3 Quality of reference water mask, exclusion layers and QC flag methods excelling flood detection quality expectations
 
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Due to the highly advanced methods and quality of input data we can guarantee a flood delineation and water mask ACCURACY of >90%, significantly excelling the minimum requirements (section 1.4.3);
 

Latest revision as of 14:29, 16 June 2021

caption

[Home]

Timeliness

The key element for the GFM is the timeliness of the product generation.
The practical experience of the whole team of the expert flood monitoring alliance has been put at service to guarantee product timeliness less or equal to 8 hours for all Sentinel-1 GRD scenes becoming available on the ESA data hubs within 5 hours.
This paramount requirement is ensured via the following measures:

  • a redundant Sentinel data access via multi access point data downloads and parallelization of downloads for an optimised bandwidth utilisation via the HubWatcher software.
  • the automatic retrieval of Sentinel-1 GRD data with the HubWatcher in 96.3 minutes (on average) following ESA publication for general availability.
  • the Pre-processing of Sentinel-1 GRD data products and inclusion into the data cube format within 10-20 minutes per scene.
  • the fast data access to the data cube with IO speeds of 15GiB/s or 120Gbps.
  • the generation of the ensemble global flood monitoring product using the three parallel algorithms consumes up to 30 minutes, with the final flood extent maps and uncertainty values being calculated within a matter of seconds.
  • the total lead time of the global flood monitoring product amounts to 60 minutes to complete the entire operational NRT workflow from acquisition to delivery.
. < 8-hour lag between satellite data acquisition and map production

Service availability

Guaranteed service availability is facilitated through EODC’s Sentinel-1 processing operations expertise, begun in 2014, which is regularly being assessed by the ESA mission reports. These lessons learned have been used to implement a completely independent IT infrastructure for the CEMS GFM system operations. The operations is also organized through redundant 24/7 production coordinator staff availabilities, such that a 99% service availability is guaranteed. 

. available 24/7/365 
. > 99% service availability 
. global coverage

Product accuracy

According to the general product specifications, the thematic accuracy of the Sentinel-1 observed flood and water extent products is required to exceed a target CSI score of 70-80%.
GFM on multiple testcases has proven to achieve an overall accuracy between the different products that is higher than 94 %.
Most importantly, the CSI scores range from 0.72 to 0.86 for both the Sentinel-1 observed flood and water extent products.
Due to the highly advanced methods and quality of input data, a flood delineation and water mask accuracy of >90% is then guaranteed. 

. 90%+ accuracy of flood mapping
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