Some of the key areas of work for agronomists that benefit from the incorporation of climate data, include:
1. Diagnosing past and present climate impacts
To assess how agriculture is already being affected by climate variability and change, agronomists use historical climate data, trends, and seasonal forecasts. These data support:
- Understanding shifts in growing conditions, such as changes in temperature patterns, growing degree-days, or the length of the frost-free period.
- Evaluating moisture availability, using indicators like total precipitation, soil moisture trends, or drought indices such as the Standardized Precipitation Evapotranspiration Index.
- Identifying the likely frequency and severity of extreme events, including heatwaves, heavy precipitation, or unseasonal frosts.
These assessments help determine which regions, crops, and farm operations are most vulnerable, and lay the groundwork for risk assessments and adaptation planning. By identifying how climate has shaped past outcomes, agronomists can provide a solid evidence base for understanding emerging challenges and opportunities.
2. Supporting on-farm adaptation and decision-making
Climate data—especially seasonal temperature and precipitation—are vital for helping producers make timely, practical decisions. Agronomists use this information to:
- Assess short- and medium-term risks, including the likelihood of droughts, floods, or pest outbreaks.
- Recommend crop varieties and nutrient management that align with shifting season lengths or temperature profiles.
- Refine sowing, harvest calendars, and spray timing based on forecasted frost dates or growing degree-day accumulation.
- Optimize irrigation strategies, using projected evapotranspiration and precipitation trends.
- Anticipate pest and disease pressure, by analyzing temperature and humidity thresholds that drive outbreaks and make informed decisions of fungicides or herbicides for these conditions.
- Guide integrated whole-farm planning, including diversification, input timing, and land-use decisions.
Integrating climate data into day-to-day planning allows producers to reduce losses, boost productivity, and build more resilient agricultural systems in the face of increasing variability.
3. Planning for long-term resilience
Beyond seasonal decisions, agronomists also support long-term planning using climate projections. These are based on greenhouse gas emissions scenarios linked to socio-economic development pathways (e.g., SSPs and RCPs), and they offer a range of plausible futures for temperature, precipitation, and extreme events.
Agronomists can use long-term projections to inform:
- Crop and rotation planning: Exploring the future suitability of new or alternative crops based on changing climate zones.
- Infrastructure investments: Designing irrigation, drainage, and storage systems that remain effective under future extremes.
- Land use and resource planning: Helping producers assess where climate may render land more or less viable over time.
- Economic risk analysis: Identifying operations at risk of becoming unsustainable without adaptation or transformation.
- Policy and program development: Supporting institutions in designing incentives or programs that reflect future climate realities.
Although many agricultural decisions are made on seasonal or annual timelines, considering long-term conditions is essential to avoid maladaptation and ensure sustainability. Agronomists serve as key translators of future climate information into concrete planning guidance.
To explore future scenarios and emissions pathways, visit: Understanding Shared Socio-economic Pathways (SSPs).