TH4.L10.2: SMAPEX: SOIL MOISTURE ACTIVE PASSIVE REMOTE SENSING EXPERIMENT FOR SMAP ALGORITHM DEVELOPMENT
1. SMAPex: Soil Moisture Active Passive EXperiment Jeffrey Walker Department of Civil Engineering Rocco Panciera 1 , Dongryeol Ryu 1 , Doug Gray 2 , Heath Yardley 2 and Tom Jackson 3 1 University of Melbourne 2 Adelaide University 3 United States Department of Agriculture
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5. The SMAP test-bed Irrigated crop Dryland pasture dryland crop 0-5cm L3_SM_40km L3_HiRes L3_AP_SM SMAP grids SM sites 0-90cm only
12. SMAPex: The concept Study Area: One SMAP radiometer pixel (34km x 38km) with 29 monitoring sites Focus areas YA & YB: Two SMAP active passive product pixels (~9km x 9km) with 13 monitoring sites ea. Ground Sampling: Six SMAP radar pixels (~3km x 3km) YA YB
19. Ground validation data HDAS soil moisture vegetation type vegetation height dew amount Vegetation water content biomass type LAI spectral crop row spacing/orientation
20. Vegetation sampling strategy Monitoring site 3km 3km x x x x x x x x x x x x x x x Vegetation type 1 Vegetation type 3 Vegetation type 2 5 vegetation samples ( x ) per dominant vegetation type
What I would like to talk to you about this afternoon is our contribution to algorithm development for the SMAP mission. Specifically, I will present to you an overview of our field activities in support of this research, with a summary of data collected from our first of 4 planned field campaigns completed just 2 weeks ago. But first I would like to acknowledge my co-investigators on the project
I would also like to acknowledge all the participants to the first field experiment. Hiding amongst them are Peggy, Rajat, Elisha, Andreas, Anna, etc; with representation from USA, Italy, Singapore, Australia …
The objectives of these campaigns and this research project specifically are to acquire field data that simulates as closely as possible in terms of incidence angle and radar/radiometer footprint ratios the data we will get from SMAP, so that we can develop and validate the retrieval algorithms. Consequently we want to …
The strategy of this project is to undertake a series of short campaigns across a season rather than to undertake a single long campaign and hope we get the desired conditions.
We have established a monitoring network on the SMAP grid
Mention that Rocco’s sites are even newer and have only surface SM and different temperature configuration
Note that we can simulate the footprint ratios of SMOS; all other simulators at present have the same footprint sizes for radar and radiometer.
Here we can see the footprint sizes/coverages and requirements for flight track planning to obtain full coverage
Sky, box, water
Location of calibrators
Mention that Rocco’s sites are even newer and have only surface SM and different temperature configuration
Mention that Rocco’s sites are even newer and have only surface SM and different temperature configuration
useful for identifying the presence or absence of dew, and verifying the assumptions that i) effective temperature has not changed throughout the course of the aircraft measurements; ii) vegetation and soil temperature are in equilibrium; and iii) soil moisture has not changed significantly during ground sampling
