--- title: "🎙Jérôme Isenbart : The Nat Cat Modelling Chain" description: The risk of natural catastrophes is a major risk for a reinsurance company like CCR Re. Successfully assessing the uncertainty associated with the occurrence and impact of natural disasters is crucial to defining our risk appetite and implementing our ambitious and controlled underwriting strategy.  image: https://blog.arundore.com/hubfs/EN%20J%C3%A9r%C3%B4me%20Isenbart%20-%20Nat%20Cat%20Chain.png --- [![Arundo_Logo_RVB-1](https://blog.arundore.com/hs-fs/hubfs/Arundo_Logo_RVB-1.png?width=115&height=76&name=Arundo_Logo_RVB-1.png)](https://www.ccr-re.com/en/home) - [News](https://blog.arundore.com/en) - [Reinsurance Tutorials](https://info.arundore.com/reinsurance-tutorials) - [Women of Power](https://info.arundore.com/women-of-power) - [MTPL Losses France Study](https://info.arundore.com/assessing-the-losses-of-severe-personal-injury-victims-in-motor-liability-cases) - [Arundo Re Talks](https://www.arundore.com/en/arundo-re-talks) - [français-FRANCE](https://blog.arundore.com/fr/la-chaine-de-modelisation-cat-nat) [Home](https://blog.arundore.com/) [The reinsurance and insurance blog of Arundo Re](https://blog.arundore.com/en) 🎙Jérôme Isenbart : The Nat Cat Modelling Chain 5 January 2023 2 min read # 🎙Jérôme Isenbart : The Nat Cat Modelling Chain The risk of natural catastrophes is a major risk for a reinsurance company like CCR Re. Successfully assessing the uncertainty associated with the occurrence and impact of natural disasters is crucial to defining our risk appetite and implementing our ambitious and controlled underwriting strategy.    ![Jérôme ISENBART](https://blog.arundore.com/hs-fs/hubfs/J%C3%A9r%C3%B4me%20ISENBART.jpg?width=1140&height=346&name=J%C3%A9r%C3%B4me%20ISENBART.jpg)   ## Assessing potential Nat Cat Losses CCR Re’s process of assessing potential Nat Cat losses starts with the individual risk of each case and then aggregate  all the individual risks to give both a comprehensive and detailed representation of the company’s risk. CCR Re has equipped itself with the best catastrophe models and has a dedicated team of specialists to model and assess natural catastrophe risk. The team also analyses the impact of climate change on our portfolios. All of CCR Re’s property and casualty business that involves Nat Cat risk (storms, floods, earthquakes, hail) is modelled to determine the distribution of potential Nat Cat losses and to measure the business’ individual risk. The outcomes of the Cat models are coupled with historical losses to produce the most accurate assessment of risk. Loss distributions are used to underwrite business and ensure that the premium is adequate at the time of underwriting.   ![2021 ACTIVITY REPORT CCR web 20042022](https://blog.arundore.com/hs-fs/hubfs/2021%20ACTIVITY%20REPORT%20CCR%20web%2020042022.jpg?width=1040&height=607&name=2021%20ACTIVITY%20REPORT%20CCR%20web%2020042022.jpg)       From the company’s point of view, the overall distribution of potential Nat Cat losses is obtained by aggregating the individual risks whilst considering the effects of geographical diversification.   This global distribution is broken down into detailed and relevant indicators to monitor and manage Cat risk, to assess Nat Cat accumulations, to structure the P&C retrocession programme and to assess expected losses in the event of a major natural disaster.   ![2-3](https://blog.arundore.com/hs-fs/hubfs/2-3.png?width=206&height=206&name=2-3.png)     “*CCR RE IS EQUIPPED WITH THE BEST CATASTROPHE MODELS AND HAS A TEAM OF SPECIALISTS DEDICATED TO MODELLING AND ASSESSING THE RISKS ASSOCIATED WITH NATURAL DISASTERS*”         ## Calculation and monitoring of Nat Cat accumulations CCR Re measures its accumulations for each section of property and casualty cover it underwrites, taking into account exposed contractual limits and potential losses. Individual accumulations are aggregated by country-peril and monitored in real time to control and optimise our underwriting appetite.   In 2022, we will continue to improve our control of natural catastrophe risk by implementing a thorough management of our natural catastrophe exposures through the collection and exploitation of the insured values we cover, which will allow us to strengthen the control of our accumulations.     ![2-3](https://blog.arundore.com/hs-fs/hubfs/2-3.png?width=206&height=206&name=2-3.png)   “*THE VALUE CHAIN CREATED MAKES IT POSSIBLE TO UNDERSTAND THE CAT COMPONENT IN PRICING IN EACH UNDERWRITTEN CASE AND TO ASSESS IN REAL TIME THE SHAPE OF THE ENTITY’S GROSS AND NET CAT PROFILE.*”       ![Sans titre (1)-1](https://blog.arundore.com/hs-fs/hubfs/Sans%20titre%20(1)-1.png?width=347&height=491&name=Sans%20titre%20(1)-1.png) 👉 This article is a part of our 2021 Activity Report, which is avalaible here ⏬     [![DOWNLOAD](https://no-cache.hubspot.com/cta/default/6458234/121fca57-40e8-416f-b3af-954eb6d4fc3e.png)](https://cta-redirect.hubspot.com/cta/redirect/6458234/121fca57-40e8-416f-b3af-954eb6d4fc3e)       Jérôme Isenbart is Chief Risk Officer and Chief Actuary at CCR Re. He can be contacted at: [jisenbart@ccr-re.fr](mailto:mhalm@ccr-re.fr)   ## Did you like this article? Don't miss the next one, it will be sent directly to you : [mailto:?subject=🎙Jérôme%20Isenbart%20:%20The%20Nat%20Cat%20Modelling%20Chain&BODY=I%20found%20this%20article%20interesting%20and%20thought%20of%20sharing%20it%20with%20you.%20Check%20it%20out:%20https://blog.arundore.com/en/the-nat-cat-modelling-chain](mailto:?subject=🎙Jérôme%20Isenbart%20:%20The%20Nat%20Cat%20Modelling%20Chain&BODY=I%20found%20this%20article%20interesting%20and%20thought%20of%20sharing%20it%20with%20you.%20Check%20it%20out:%20https://blog.arundore.com/en/the-nat-cat-modelling-chain) ## Latest articles #### 10 June 2025 ### [Raphaël Marin joins Arundo Re as Non-Life Underwriter and Actuary for the Latin America market](https://blog.arundore.com/en/raphael-marin-joins-arundo-re-as-non-life-underwriter-and-actuary-for-the-latin-america-market) Graduated from the ISFA and certified by the French Institute of Actuaries, Raphaël Marin has over thirteen years' experience in the reinsurance and… ### [+](https://blog.arundore.com/en/raphael-marin-joins-arundo-re-as-non-life-underwriter-and-actuary-for-the-latin-america-market) #### 12 May 2025 ### [Guillaume Bergot joins Arundo Re as Non-Life Underwriter for the French, Belgian and Luxembourg Markets](https://blog.arundore.com/en/guillaume-bergot-joins-arundo-re-as-french-market-non-life-underwriter) With over a decade of experience in the reinsurance industry, Guillaume Bergot has worked successively for Guy Carpenter and Gallagher Re. ### [+](https://blog.arundore.com/en/guillaume-bergot-joins-arundo-re-as-french-market-non-life-underwriter) #### 14 April 2025 ### [Kshitij Chirimar joins Arundo Re as Senior Underwriter for the Indian sub-continent](https://blog.arundore.com/en/ludovic-boulanger-joins-ccr-re-as-life-underwriter-0) Arundo Re is pleased to welcome Kshitij Chirimar as Senior Underwriter, marking a significant step in expanding our presence across the Indian… ### [+](https://blog.arundore.com/en/ludovic-boulanger-joins-ccr-re-as-life-underwriter-0) #### 3 April 2025 ### [📄 Press Release : Annual results 2024](https://blog.arundore.com/en/-press-release-annual-results-2024) 2024, another year of profitable growth for Arundo Re ### [+](https://blog.arundore.com/en/-press-release-annual-results-2024) [View all articles](https://blog.arundore.com/en) **Arundo Re** 6 RUE FAVART 75002 PARIS - FRANCE [Contact us](https://www.arundore.com/en/contact) [Job opportunities](https://www.welcometothejungle.com/en/companies/arundo-re) [![Arundo_Logo_RVB-1](https://blog.arundore.com/hs-fs/hubfs/Arundo_Logo_RVB-1.png?width=202&height=133&name=Arundo_Logo_RVB-1.png)](https://www.arundore.com/en/)   [Terms of use & legal notice](https://www.arundore.com/en/legal-notice) I[Personal data protection](https://www.arundore.com/en/gdpr) I © - Arundo Re 2026 All rights reserved ```json { "@context" : "https://schema.org", "@type" : "BlogPosting", "author" : { "@type" : "Person", "name" : "CCR Re", "url" : "https://blog.arundore.com/en/author/ccr-re" }, "dateModified" : "2023-01-05T16:25:16.642Z", "datePublished" : "2023-01-05T16:25:16.000Z", "headline" : "🎙Jérôme Isenbart : The Nat Cat Modelling Chain", "image" : [ "https://blog.arundore.com/hubfs/EN%20J%C3%A9r%C3%B4me%20Isenbart%20-%20Nat%20Cat%20Chain.png" ], "mainEntityOfPage" : { "@id" : "https://blog.arundore.com/en/the-nat-cat-modelling-chain", "@type" : "WebPage" }, "publisher" : { "@type" : "Organization", "logo" : { "@type" : "ImageObject", "url" : "https://blog.arundore.com/hubfs/Arundo_Logo_RVB-2.png" }, "name" : "Arundo Re" } } ```