SMEX02 Vegetation Water Content Data for Iowa Watersheds

Vegetation Water Content (VWC) data was collected for the Iowa Regional and Walnut Creek Watershed areas during the Soil Moisture Experiment 2002 (SMEX02). The dataset is managed by the NSIDCV0 organization and has been updated on platforms as recently as 2026, though an original source date from 2003 indicates the core observational period. It provides measurements related to plant water status and land surface characteristics.

Use Cases

• Calibrating and validating remote sensing algorithms for soil moisture and vegetation water content retrieval.
• Modeling evapotranspiration and water balance within agricultural watersheds.
• Studying the correlation between vegetation water status and land surface cover types.
• Analyzing seasonal or experimental variations in plant characteristics during the SMEX02 campaign.

Strengths

• Data originates from a focused NASA field experiment (SMEX02), ensuring a controlled collection context.
• Its presence on multiple authoritative platforms (nasa_earthdata, data.gov) signals recognized importance and curation.

Limitations

• Critical details like row count, column names, and exact file size are unavailable from all sources.
• There is a conflict in last updated dates, with one source showing 2003 and others showing 2026, creating uncertainty about update activity.
• The specific measurement methodology and sensor details are not described in the provided metadata.

Provenance

Source

NSIDCV0 organization, associated with NASA's SMEX02 experiment.

Collection Method

Field measurements collected during the Soil Moisture Experiment 2002 (SMEX02), likely involving ground-based sampling and/or instrument readings.

Time Range

Primary data collection likely occurred around 2002, corresponding to the SMEX02 campaign.

Freshness

2026-03-12 22:26:19.544105

Geography

Iowa Regional area and the Walnut Creek Watershed in Iowa, USA.