Surface spectral albedo

14 August 2002 - 20 August 2002

Lead Scientist: Alexander Trishchenko

Observatory: sgp, sgp

Purpose of this field campaign is to collect surface albedo spectra for representative surface types in the ARM SGP CART site area, to gather information useful for conducting surface type classification from aerial/satellite remote sensing data, to develop the first detailed spectral model of surface reflectance over the ARM SGP CART site area.

Activity Summary

August 14. Clear-sky. Measurements of surface spectral reflectance at the Central Facility and surrounding area. Altogether we made measurements at 5 different locations. Three instruments were used: spectroradiometer GER3700, PAR radiometer TRAC. MICROTOPS sunphotometer. a) Wild grass near 10m towers. b) Unpaved road at CF c) Wild grass. Different location within CF area. d) Bare soil. Ploughed field. Two locations.

August 15. Mostly clear-sky. Measurement were made at the following locations a) Milo (grain sorghum) field. b) Bare soil. c) Tall grass. d) Short grass. e) Bare soil. f) Young green milo (grain sorghum).

August 16. Mostly cloudy to overcast conditions. a) Wheat stubble. b) Soya beans. c) Alfalfa d) Unharvested wheat with dry weeds

August 17. Partly cloudy. Surface reflectance measurements starting August 17 were made with TRAC radiometer only due to failure of GER3700. Additional measurements by IR thermometer were conducted by M .Cribb ( University of Maryland). a) Ringwood extended facility. b) Byron extended facility c) Great Salt Plains Lake (water surface) d) Great Salt Plains Lake (salt covered surface) e) Grass around Great Salt Plains Lake. f)
August 18, 2002. Clear-sky to partly cloudy conditions a) El-Reno Extended Facility. b) Meeker Extended Facility. c) Pawhuska Extended Facility.

August 19. Survey of surface types distribution around ARM CF site ( ~ 6 x 6 miles)

The distribution of vegetation types was documented over the area surrounding the ARM CF and marked on the most recent Landsat image. Landsat image for July 31, 2002 is shown below. Individual fields are of size 0.5 by 0.5 mile each.

Timeline

2011

McFarlane SA, K Gaustad, E Mlawer, C Long, and J Delamere. 2011. "Development of a high spectral resolution surface albedo product for the ARM Southern Great Plains central facility." Atmospheric Measurement Techniques, 4(9), 10.5194/amt-4-1713-2011.
Research Highlight

2003

Trishchenko AP, Y Luo, MC Cribb, Z Li, and K Hamm. 2003. Surface Spectral Albedo IOP at the ARM SGP Site in August 2002: Results, Analysis, and Future Plans. In Thirteenth Atmospheric Radiation Measurement (ARM) Program Science Team Meeting, Ed. by D. Carrothers, Richland, WA: U.S. Department of Energy.


View All Related Publications

Campaign Data Sets

IOP Participant Data Source Name Final Data
Alexander Trishchenko spectroradiometer GER3700 Order Data