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      Climate risk metrics

      How Regrow supports CSRD-aligned drought risk insights in your supply chain

      Overview

      Regrow provides climate risk insights to help companies meet climate risk disclosure requirements under the Corporate Sustainability Reporting Directive (CSRD). These insights are integrated into the Sustainability Insights (SI) platform and help quantify historical drought trends across customer-defined sourcing regions and crops.

      Drought

      1. What We Measure

      We use the Standardized Precipitation Index (SPI), a globally recognized indicator of drought, derived from historical precipitation data. SPI measures how dry a region was in a given year compared to its long-term average. The more negative the SPI value, the more intense the drought.

      To make this actionable, we classify SPI into discrete drought severity scores, using the US Drought Monitor’s approach:

       

      SPI Range

       

      Drought Category

       

      Drought Score

       

      ≥ -0.49

      No drought / wet

      No Risk

      -0.5 to -0.79

      Abnormally dry

      D0

      -0.8 to -1.29

      Moderate drought

      D1

      -1.3 to -1.59

      Severe drought

      D2

      -1.6 to -1.99

      Extreme drought

      D3

      ≤ -2.0

      Exceptional drought

      D4
       

      2. Where We Measure

      We currently support drought risk insights globally with a mix of spatial resolution from field-level and crop-specific insights to regional crop-agnostic insights.

      Support for broader field-level resolution is planned for future releases.

      3. When We Measure

      • Drought scores are provided annually for each region.

      • Current coverage spans 2014 through 2024, enabling customers to analyze drought trends and persistence over time.

      • Scores are aligned to the calendar year (Jan–Dec) to match typical corporate reporting cycles.

      4. How We Measure

      Drought scores are calculated at two levels of resolution:

      Global Resolution (Regional View)

      • Based on a 0.25° x 0.25° grid (~180,000 acres per cell)

      • Available globally

      • Provides a drought score for any subregion, regardless of size, crop or field boundaries

      Field-Level Resolution (Crop-Specific View)

      • Uses Regrow’s delineated field boundaries

      • Where available, we calculate drought scores per field, then aggregate those scores only for fields growing a specific crop, such as barley

      • This allows you to understand how drought specifically affects your crops within a sourcing region

      5. How We Aggregate Risk

      Depending on the resolution:

      • Global scores are averaged across all grid cells in a region

      • Field-level scores are averaged using a cropland area-weighted approach, so larger fields have more influence in the final score 

      ∑n fields (SPI * field area) / ∑n fields (field area)

      We never mix global and field-level data in a single calculation to ensure accuracy and avoid over-representing certain areas.

      6. How You’ll See This in Sustainability Insights

      In the Spatial Exploration tool and Reporting modules, you’ll see:

      • Annual drought scores for each sourcing region.

       

      • A visual map overlay that highlights the severity of drought across your regions of interest.

       
       

      • An excel spreadsheet that includes the annual drought score for each supply shed or subregion (depending on your selection of aggregation at the time of the export).

      Known Limitations & What’s Next

      • Crop-specific insights are only available where Regrow has both field boundaries and crop classification data

      • Climate scores reflect historical risk only – forecasts and future scenarios are not included in this release

      • Global scores do not reflect crop presence or specific field activity

      We’re actively working to expand this product’s value and coverage:

      • New countries in the agriculture supply chain (e.g., Germany, Canada, UK)

      • Support for other CSRD-relevant risk categories, such as biodiversity, water scarcity, and land use change

      Summary

      Regrow’s climate risk insights allow you to identify climate exposure across your supply chain and meet regulatory requirements with confidence. Our data is science-based, geographically precise, and scalable across commodities, crops, and geographies.

      Have questions or need help interpreting your drought scores? Please reach out to your Account Manager.