USA-Iowa

Overview

Project Objectives:

The original project objectives for our site have not changed.

Crop identification and Crop Area Estimation:

  • Crop area estimation was conducted via the USDA Farm Service Agency and National Agricultural Statistical Service programs for the South Fork. This is an operational product.

Crop Condition/Stress:

  • As part of a remote sensing project, the evaporative stress index (ESI) is being computed on a 10 km resolution for the continental U.S. This is available from http://hrsl.arsusda.gov/drought/. This is operational.

Soil Moisture:

  • Currently there are 20 stations collecting soil moisture and soil temperature data in the domain.  http://hrsl.arsusda.gov/southfork/.

Crop Residue, Tillage and Crop Cover Mapping:

  • Assessments of crop residue amount are in the process of being analyzed for publication on methodologies for estimation.

Project Objectives

Site Description

Landscape TopographyFlat
Typical Field Size800mX800m
Climatic ZoneTemperate, cold
Major Crops and Calendars

Maize (Normal):
Calendar: April - October

Soya beans (Normal):
Calendar: April - October

Soil Type & Texture

Inorganic:

  • Clay Loam
Soil Drainage Class
  • Poorly drained
Irrigation Infrastructure
  • No irrigation (precipitation)
Other Site Details

In Situ Observations

soil moisture, soil temperature and precipitation data

  • Crop Type(s):
  • Collection Protocol:

    20 in situ soil moisture stations

  • Frequency:

Crop residue cover

  • Crop Type(s):
  • Collection Protocol:

    Line-point transect method in selected fields

  • Frequency: Annually after planting

Net Radiation

  • Crop Type(s):
  • Collection Protocol:

    Net radiometers at selected sites

  • Frequency: May-Sept, 2009-11 at 30 minute intervals

Precipitation

  • Crop Type(s):
  • Collection Protocol:

    Tipping bucket rain gauges at selected sites

  • Frequency: 5/1/2009-present at Hourly intervals

Micrometeorological Data (Air Temp, Wind, Vapor Pressure, etc.)

  • Crop Type(s):
  • Collection Protocol:

    Campbell Scientific Instrumentation

  • Frequency: 5/1/2009 - present at 30 minute intervals

Soil Moisture at 5 cm and 50 cm

  • Crop Type(s):
  • Collection Protocol:

    Hydra Probes

  • Frequency: 5/1/2009 - present at Hourly intervals

Water/Energy/CO2 fluxes

  • Crop Type(s):
  • Collection Protocol:

    Eddy Covariance Fluxes

  • Frequency: May-Sept, 2009-11 at 30 minute intervals

EO Data

Optical Data Requirements

  • Approximate Start Date of Acquisition: 01/03
  • Approximate End Date of Acquisition: 01/12
  • Spatial resolution: Low resolution (above 60m)Medium resolution (20-60m)
  • temporal_frequency: WeeklyBiweekly
  • Level of Expertise: Intermediate
  • Latency of Data Delivery: More than 5 days
  • Challanges:

    • SAR Data Requirements

  • Approximate Start Date of Acquisition: 01/04
  • Approximate End Date of Acquisition: 31/05
  • Spatial resolution: High resolution (5-20m)
  • temporal_frequency: Weekly
  • Frequency: C
  • Incidence Angle: Medium
  • Polarisation:
  • Level of Processing: Level 2
  • Orbit: Any
  • Level of Expertise: Intermediate
  • Latency of Data Delivery: More than 5 days
  • Challanges:

    • Passive Microwave Data Requirements

    Thermal Data Requirements

    Results

    Documents and Files

    Links to paper

    Project Reports

    Study Team

    Team Leader

  • Name: Michael Cosh
  • Affiliation: United States Departement of Agriculture
  • Affiliation Webpage: https://www.usda.gov/
  • Position:
  • Email: michael.cosh@ars.usda.gov
  • Personal Webpage:
  • Phone number:
  • Postal Address:

    • Other Team Members

  • Name: Martha Anderson
  • Affiliation: United States Departement of Agriculture
  • Affiliation Webpage: https://www.usda.gov/
  • Position:
  • Email: martha.anderson@ars.usda.gov
  • Personal Webpage:
  • Role: Co-Lead