15 datasets

NASA Earthdata CMR + NASA Data Portal2021 · Image data

This dataset provides soil thaw depth and moisture (STDM) measurements and dielectric properties measured by different research teams at sites in Alaska, U.S., and the Northwest Territories, Canada. There are multiple observations per site and 352,719 total observations. The dataset includes 206,000 observations of active layer thickness measured by mechanical probing (6.0%) or ground penetrating

NASA Earthdata CMR + NASA Data Portal2013 · Image data

This data set reports soil moisture expressed as volumetric water content (VWC), daily precipitation, air temperature, relative humidity, and dew point measurements conducted at the Seca Floresta site, km 67, Tapajos National Forest, Brazil. The measurements were part of the Rainfall Exclusion Experiment (REE) established to study the response of a humid Amazonian forest to severe drought. VWC was

NASA Earthdata CMR + NASA Data Portal2012 · Image data

This data set reports soil carbon dioxide (CO2) and nitrous oxide (N2O) concentrations and soil volumetric water content (VWC) from a rainfall exclusion experiment that was conducted at the km 67 Seca Floresta site, Tapajos National Forest, Brazil. Samples were collected every two to three months. The purpose was to observe the potential effects of severe water stress on a humid Amazonian forest (

NASA Earthdata CMR + NASA Data Portal2012 · Image data

This data set reports monthly measured soil volumetric water content (VWC) from a rainfall exclusion experiment that was conducted from 1999-2001 at the km 67 Seca Floresta site, Tapajos National Forest, Brazil. The purpose was to observe the potential effects of severe water stress on a humid Amazonian forest (Nepstad 2002). There are two ASCII comma delimited files with measured VWC, one for the

NASA Earthdata CMR + NASA Data Portal2010 · Image data

This data set reports continuous high-resolution frequency-domain reflectometry measurements of soil moisture to 10 m depth and precipitation data near each of the two towers located at the km 83 tower site (logged forest site) in the Tapajos National Forest in the state of Para, Brazil. Measurements were made during 2002 and 2003. Soil moisture and precipitation data are provided in two comma-del

NASA Earthdata CMR + NASA Data Portal2009 · Image data

We analyzed rainfall obtained in a network of 38 rain gauges located near the confluence of the Tapajos and Amazon rivers in the eastern Amazon Basin. We found that tipping bucket rain gauges work adequately in the Amazon rainfall regime, but careful field calibration and comparison with collocated conventional rain gauges was essential to incorporate daily totals from operational array into regio

NASA Earthdata CMR + NASA Data Portal2007 · Image data

This data set contains information that can be used to examine water fluxes in soils beneath tree crops in an Amazonian agroforest. The data consists of repeated measurements of soil matrix pressure and soil moisture content at several depths. The study was carried out at the Empresa Brasileira de Pesquisa Agropecuaria (Embrapa)-Amazônia Ocidental, 29 km North of Manaus, Brazil (3° 8' S, 59°

NASA Earthdata CMR + NASA Data Portal2005 · Image data

Soil moisture and temperature profile sensors were deployed at flux tower sites in Mongu, Zambia and Skukuza, South Africa. In addition, thermal infrared sensors were deployed to monitor surface temperature at the sites, and soil samples were collected for physical property analysis. A heat-flux plate was also installed at 10 cm depth at the Mongu site. The data cover the period variously from Aug

NASA Earthdata CMR + NASA Data Portal2004 · Image data

Short-term measurements of carbon dioxide, water, and energy fluxes were collected at four locations along a mean annual precipitation gradient in southern Africa during the SAFARI 2000 wet (growing) season campaign of 2000. The purpose of this research was to determine how observed vegetation-atmosphere exchange properties are functionally related to long-term climatic conditions. This research w

NASA Earthdata CMR + NASA Data Portal2000 · Image data

The BOREAS TF-01 team collected several data sets in support of its efforts to characterize and interpret soil information at the SSA-OA tower site in 1994 as part of BOREAS. Data sets collected include soil respiration, temperature, moisture, and gravimetric data.

NASA Earthdata CMR + NASA Data Portal2000 · Image data

The BOREAS TF-01 team collected energy, carbon dioxide, and momentum flux data above the canopy along with meteorological and soils data at the BOREAS SSA-OA site from mid-April to the end of the year for 1996.

NASA Earthdata CMR + NASA Data Portal1999 · Image data

The BOREAS HYD-01 team made measurements of volumetric soil moisture at the SSA and NSA tower flux sites in 1994 and at selected tower flux sites in 1995-97. Different methods were used to collect these measurements, including neutron probe and manual and automated TDR. In 1994, the measurements were made every other day at the NSA-OJP, NSA-YJP, NSA-OBS, NSA-Fen, SSA-OJP, SSA-YJP, SSA-Fen, SSA-YA,

NASA Earthdata CMR + NASA Data Portal1994 · Image data

In the Soil Carbon Dioxide Flux study, a prototype gas exchange system and sensor were used to determine the soil surface flux of CO2 and associated parameters at the three FIFE supersites. The goal of this investigation was to characterize fluxes of carbon dioxide from the surface of the soil for a representative portion of the FIFE study area. These measurements are required to understand the ca

NASA Earthdata CMRcollection

LTER - Long-Term Ecological Research Program/Kellogg Biological Station (KBS) LTER/KBS015 (Summary adapted from the LTER Core Data Set Catalog): Analyses of soil moisture in upper 15 cm and upper 50 cm of soil profile in each plot of the main cropping system experiment described in KBS004. Nondestructive measurements taken with replicate time domain reflectometry (TDR) probes installed semipermane

NASA Earthdata CMRcollection

LTER - Long-Term Ecological Research Program/Kellogg Biological Station (KBS) LTER/KBS014 (Summary adapted from the LTER Core Data Set Catalog): Measurements of water movement through and within two landscape transects of approximately 12% slope. Neutron probe access tubes to 1.5 m depth installed along a Kalamazoo soil series transect and along an Oshtemo series transect. Also time domain reflect