LBA-ECO CD-10: H2O Vapor Profiles in Amazon Rainforest

LBA-ECO CD-10 reports vertical profiles of H2O vapor concentrations measured at the Para Western (Santarem) km 67 Primary Forest Tower Site in Brazil's Tapajos National Forest. Measurements were taken at eight heights from 0.91 to 62.2 meters from January 2002 through January 2006, with data averaged hourly. The dataset includes co-located eddy flux measurements of CO2 and H2O and a set of meteorological parameters.

Use Cases

• Modeling vertical transport of water vapor in a primary rainforest canopy based on eight measurement levels.
• Analyzing diurnal and seasonal cycles of atmospheric humidity using hourly-averaged time series data from 2002-2006.
• Studying forest-atmosphere exchange processes by integrating H2O profile data with co-located eddy flux measurements of CO2 and H2O.
• Calibrating remote sensing products for atmospheric water content using in-situ tower-based column integral measurements.

Strengths

• Provides detailed vertical resolution with H2O measurements at eight specific heights (0.91m to 62.2m).
• Covers a multi-year time series from January 2002 to January 2006.
• Includes co-located, multi-instrument measurements: eddy fluxes and a set of meteorological parameters.
• Describes a detailed, dual-method calibration procedure for the H2O measurements.

Limitations

• Column names and exact data structure are not specified in the provided metadata.
• Conflicting 'last updated' dates exist between sources (2006 vs. 2026), suggesting potential metadata inconsistency.
• The dataset's temporal coverage ended in 2006, limiting analysis of recent trends.

Provenance

Source

National Aeronautics and Space Administration (NASA); data associated with the LBA-ECO project and the Ph.D. thesis of L.R. Hutyra (Harvard University, 2007).

Collection Method

Air samples drawn sequentially from eight tower inlets and analyzed with a Licor LI-6262 infrared gas analyzer (IRGA), with calibrations using a dew point hygrometer and sonic temperature relationships.

Time Range

January 2002 to January 2006

Freshness

2026-04-10 01:47:28.988055

Geography

Tapajos National Forest, Para Western (Santarem) - km 67 Primary Forest Tower Site, north central Brazil.