A5083480243- Soil Moisture and Remote Sensing
- Precipitation Measurement and Analysis
- Hydrology and Drought Analysis
- Soil and Unsaturated Flow
- Plant Water Relations and Carbon Dynamics
- Climate change and permafrost
- Irrigation Practices and Water Management
- Climate variability and models
- Synthetic Aperture Radar (SAR) Applications and Techniques
- Cryospheric studies and observations
- Climate change impacts on agriculture
- Meteorological Phenomena and Simulations
- Soil Geostatistics and Mapping
- Remote Sensing in Agriculture
- Tree-ring climate responses
- Urban Heat Island Mitigation
- Rice Cultivation and Yield Improvement
- Tree Root and Stability Studies
- Geotechnical Engineering and Soil Stabilization
- Forest ecology and management
- Remote Sensing and Land Use
- Solar Radiation and Photovoltaics
- Mycorrhizal Fungi and Plant Interactions
- Hygrothermal properties of building materials
- Plant Pathogens and Fungal Diseases
Universidad de Salamanca
2015-2024
Agrobiotechnology Institute
2024
The National Aeronautics and Space Administration (NASA) Soil Moisture Active Passive (SMAP) satellite mission was launched on January 31, 2015. observatory developed to provide global mapping of high-resolution soil moisture freeze-thaw state every two three days using an L-band (active) radar (passive) radiometer. After irrecoverable hardware failure the July 7, 2015, radiometer-only product became only operational for SMAP. provides estimates posted a 36 km Earth-fixed grid produced...
Abstract The Soil Moisture Active Passive (SMAP) mission Level-4 Surface and Root-Zone (L4_SM) data product is generated by assimilating SMAP L-band brightness temperature observations into the NASA Catchment land surface model. L4_SM available from 31 March 2015 to present (within 3 days real time) provides 3-hourly, global, 9-km resolution estimates of (0–5 cm) root-zone (0–100 soil moisture conditions. This study presents an overview algorithm, validation approach, assessment versus in...
A new index for agricultural drought monitoring is presented based on the integration of different soil/vegetation remote sensing observations. The synergistic fusion surface soil moisture (SSM) from Soil Moisture and Ocean Salinity (SMOS) mission, with Moderate Resolution Imaging Spectroradiometer (MODIS) derived land temperature (LST), water/vegetation indices was tested. rationale approach inverse relationship between LST, vegetation condition content. Thus, proposed Agricultural Drought...
During the last decade, a variety of agricultural drought indices have been developed using soil moisture (SM), or any its surrogates, as primary indicator. In this study, comprehensive study four innovative SM-based indices, Soil Water Deficit Index (SWDI), Moisture Agricultural Drought (SMADI), (SMDI) and Wetness (SWetDI), is conducted over large semi-arid crop region in northwest Spain. The were computed on weekly basis from June 2010 to December 2016 1-km satellite SM estimations Ocean...
Drought has a great impact on agriculture and food security, climate change is increasing its frequency exacerbating intensity. Given the enormous interest in studying recent drought evolution, this work, agricultural trends over past four decades Iberian Peninsula (IP) were analyzed. A trend analysis was performed with soil moisture based study of evolution anomalies Soil Water Deficit Index (SWDI). Two databases (Lisflood ERA5-Land) used at daily weekly temporal scales. Climate...
The impact of climate change on soil moisture (SM) dynamics is uncertain. Changes in the Earth's SM during recent decades have been studied globally and different regions, but little attention has given to Europe. In addition, most previous works just relied a monotonic behavior changes, which strong assumption not always valid. We argue that this fact, together with use large temporal scales, prevented observation clear patterns trends over continent. work, we study European for 30-year...
Soil moisture (SM) plays a key role in the water cycle, and its variability is intimately linked to coupled land-atmosphere processes. Having good knowledge of soil-atmospheric interactions thus essential assess impact climate change on SM; however, many aspects how energy exchanges occur soil-atmosphere continuum are still uncertain. In particular, it known that atmospheric circulation patterns influence conditions over Europe but their SM has only rarely been studied. This study provides...
Given the growing interest in drought impacts on crops, this work studied impact of agricultural wheat and barley during period 2001–2020. The study was carried out Spanish regions Castilla y León Castilla–La Mancha, with approximate areas 94,000 km2 79,000 km2, respectively, German Nordrhein-Westfalen, Niedersachsen Bayern, 34,000 48,000 71,000 respectively. These are main cereal-growing Spain Germany. Soil moisture (SM) root zone extracted from LISFLOOD model database, SM anomalies were...
While the synergy between thermal, optical, and passive microwave observations is well known for estimation of soil moisture vegetation parameters, use remote sensing sources based on Global Navigation Satellite Systems (GNSS) remains unexplored. During an airborne campaign performed in August 2014, over agricultural area Duero basin (Spain), innovative sensor developed by Universitat Politècnica de Catalunya-Barcelona Tech GNSS Reflectometry (GNSS-R) was tested estimation. The objective to...
In this study, six satellite-based root zone soil moisture (RZSM) estimates from March 2015 to December 2016 were evaluated both temporally and spatially. The first two the Soil Moisture Active Passive (SMAP) Ocean Salinity (SMOS) L4 RZSM products. other four obtained through Water Index (SWI) approach, which embedded surface (SSM). SMOS-Barcelona Expert Center (BEC) SSM product apparent thermal inertia (ATI)-derived Moderate Resolution Imaging Spectroradiometer (MODIS) data used as...
Rainfed cereal yields show high variability depending on the varying conditions of concurrent factors during crop year. Among them, hydrometeorological such as maximum temperature, rainfall, and notably, soil moisture, strongly affect production, but greatest source uncertainty yield estimates stems from their interaction. This is special interest in water-limited regions where climate change expected to more intensely, also others water increasingly limited. Despite highly non-linear nature...
This work aimed to evaluate the capability of modelled vs in situ soil moisture observations northwest Spain for a period four years (2010–2013) order validate SMOS L2 product. Comparisons were performed set representative stations Soil Moisture Measurement Stations network University Salamanca (REMEDHUS) at both point and area scales. The series showed good correlation with series, better than that obtained (0.77 0.68 average coefficients). However, some underestimation or overestimation...
Abstract. An increasing number of permanent soil moisture measurement networks are nowadays providing the means for validating new remotely sensed estimates such as those provided by ESA’s Soil Moisture and Ocean Salinity (SMOS) mission. Two types in situ can be found: small-scale (100–10000 km2), which provide multiple ground measurements within a single satellite footprint, large-scale (>10000 contain point observation per footprint. This work presents results comprehensive spatial...
NASA's Soil Moisture Active Passive (SMAP) mission launched on January 31, 2015 into a sun-synchronous 6 am/6 pm orbit with an objective to produce global mapping of high-resolution soil moisture and freeze-thaw state every 2-3 days using L-band (active) radar (passive) radiometer. The SMAP radiometer began acquiring routine science data March continues operate nominally. SMAP's radiometer-derived product (L2_SM_P) provides estimates posted 36 km fixed Earth grid brightness temperature...
In recent decades, there has been increasing interest in studying the variability soil water properties and, specifically, spatiotemporal content. This is motivated by notable theoretical and applied research interests moisture dynamics their implications for many natural processes. study aimed to whether are variations spatial pattern of temporal stability over time analyze possible influences certain hydroclimatic (soil content, precipitation, evapotranspiration) factors (texture, bulk...