In 2009 and 2010 the L-band microwave Cooperative Airborne Radiometer for Ocean and Land Studies (CAROLS) campaign was performed in southwestern France to support the calibration and validation of the new Soil Moisture and Ocean Salinity (SMOS) satellite mission. The Lband Microwave Emission of the Biosphere (L-MEB) model was used to retrieve surface soil moisture (SSM) and the vegetation optic...

The need for water conservation continues to increase as global freshwater resources dwindle. Turfgrass mangers are adapting these concerns by implementing new tools reduce consumption. Time-domain reflectometer (TDR) soil moisture sensors can decrease usage when scheduling irrigation, but nonuniformity across unsampled locations creates irrigation inefficiencies. Remote sensing data have been ...

NASA's Cyclone Global Navigation Satellite System (CYGNSS) mission has gained significant attention within the land remote sensing community for estimating soil moisture (SM) by using Reflectometry (GNSS-R) technique. CYGNSS constellation generates Delay-Doppler Maps (DDM)s, containing important earth surface information from GNSS reflection measurements. Many previous studies considered...

Robust assessment of crop water availability requires effective integration soil moisture data within the range field capacity (θFC) to permanent wilting point (θPWP). Emerging needs for spatiotemporally dynamic θFC and θPWP are difficult achieve with lab determinations. Therefore, we used long-term from 182 sites across United States evaluate whether extremes defined by 95th 5th percentiles re...

Many applications for irrigation management and environment monitoring exploit buried sensors wired-connected to the soil surface for information retrieval. Wireless Underground Sensor Networks (WUSNs) is an emerging area of research that promises to provide communication capabilities to these sensors. To accomplish this, a reliable wireless underground communication channel is necessary, allow...

1. ABSTRACT In this paper, we present forward model of the microwave backscattering from a vegetated terrain at L band for application in the upcoming SMAP (Snow Moisture Active and Passive) mission. The objective of the SMAP mission is to provide global measurements of soil moisture and its freeze/thaw state [1]. These measurements will be used to enhance understanding of processes that link t...

Abstract. Being an extensively produced natural fiber on earth, cotton is of importance for economies. Although the plant broadly adapted to varying environments, growth and irrigation water demand may be challenged by future climate change. To study impacts change productivity in different regions across world requirements related it, we use process-based, spatially detailed biosphere hydrolog...

This paper presents an approach for retrieval of soil moisture in Nagqu region Tibetan Plateau using VV-polarized Sentinel-1 SAR and MODIS optical data, by coupling the semi-empirical Oh-2004 model Water Cloud Model (WCM). The Oh is first used to estimate surface roughness parameter based on hypothesis that invariant among acquisitions. Afterward, vegetation water content (VWC) WCM calculated f...

The Weishan Irrigation Zone along the lower reaches of the Yellow River consists of a total irrigated area of 3600 ha. The region has an average annual rainfall of 500–600 mm, with 60–70% of local rainfall occurring during the summer, and with less than 15% in spring. The water deficit during the spring affects the winter wheat growth from March to early June, which is a major growth period sig...