# Examining Climate Variability’s Impact on Simultaneous Breadbasket Yield Shocks - ESSIC

> A University of Maryland study uses more than 34,000 yield observations from 25 countries back to 1900 to examine simultaneous crop shocks in global breadbaskets. It finds that maize yield shocks hit at least three of nine breadbaskets at once 10.3% of the time. Shocks across four or five breadbaskets were much rarer.

- Date: 2023-02-02 · published 2023-02-02T12:00:00.000Z
- Category: weather · region Global · magnitude low
- Page: https://feedsoft.ai/events/37251-examining-climate-variability-s-impact-on-simultaneous-breadbasket-yield-shocks
- Commodities: [Corn](https://feedsoft.ai/c/CORN.md)

## Why it matters

The findings show that climate-driven shocks in several major grain regions can coincide, which raises the risk of sharp global maize price spikes. The study is a historical analysis and does not signal an immediate price move.

## Read by commodity

- CORN: neutral

## Similar past events

| Commodity | Date | Event | 5-day % | 20-day % |
| --- | --- | --- | --- | --- |
| CORN | 2022-07-27 | [Early Look at Corn Yield Prospects Shows High Variability](https://feedsoft.ai/events/13346-early-look-at-corn-yield-prospects-shows-high-variability.md) | +3.1% | +5.3% |
| CORN | 2018-04-03 | [Study: Climate effects on ag yields vary by location, crop](https://feedsoft.ai/events/65364-study-climate-effects-on-ag-yields-vary-by-location-crop.md) | +0.7% | +1.4% |
| CORN | 2023-02-01 | [Contrasting impacts of dry versus humid heat on US corn and soybean yields](https://feedsoft.ai/events/13304-contrasting-impacts-of-dry-versus-humid-heat-on-us-corn-and-soybean-yields.md) | +1.2% | -4.9% |
| CORN | 2025-08-14 | [Indiana Corn, Soybean Crops Feel the Heat and Variability of Late Planting](https://feedsoft.ai/events/13068-indiana-corn-soybean-crops-feel-the-heat-and-variability-of-late-planting.md) | +1.1% | +4.8% |
| CORN | 2018-12-05 | [Hotter world threatens the breadbasket of the US](https://feedsoft.ai/events/61432-hotter-world-threatens-the-breadbasket-of-the-us.md) | +0.2% | +2.0% |

## Sources

- essic.umd.edu: https://essic.umd.edu/climate-change-breadbasket/

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Data from Feedsoft AI (https://feedsoft.ai/). For information only; not investment advice.