Update on Drought Monitoring Indicators and Indices at SERCOM-3 Conference

The SERCOM-3 conference held in Bali, Indonesia, discussed the adoption of additional drought indicators and indices for use by National Meteorological and Hydrological Services (NMHS). The update to the Global Drought Classification System (GDCS) included recommendations for the use of standardized precipitation index (SPI), standardized precipitation and evapotranspiration index (SPEI), and the exploration of the Combined Drought Index (CDI) integrating multiple indicators. The resolution aims to enhance drought characterization and management practices globally.

• Drought monitoring
• SERCOM-3
• Global Drought Classification System
• NMHS
• Bali conference

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1. SERCOM-3 Third session of the Commission for Weather, Climate, Hydrological, Marine and Related Environmental Services and Applications Agenda item 4.2(2) Drought Monitoring Indicators and Indices Bali, Indonesia 4-9 March 2024

2. Doc 4.2(2)/1 (SERCOM-3) Update to the Global Drought Classification System (GDCS) in Resolution 16 (Cg-19) - WMO Activities on Drought Management, Recommends to Executive Council the adoption of Additional Drought Indicators and Indices for Use by NMHS sthroughthe draft resolution provided in the Annex. INF 4.2(2) provides an overview of the threeDrought Indicators and Indices.

3. Doc 4.2(2)/1 (SERCOM-3) Requests Members to promote the use the Standardized Precipitation Index (SPI) and the Standardized Precipitation and Evapotranspiration Index (SPEI) to characterize droughts, in addition to other drought indicators and indices that are already used by Members. Further Requests Members to explore the use of Combined Drought Index (CDI) which is based on the integration of three drought indicatorson the 1) SPI/SPEI, 2) soil moisture, and 3) remotely sensed vegetation information.

4. Thank you. wmo.int