Related Experiment Video
Updated: Jan 30, 2026
10:28
Investigating the Relationship between Sea Surface Chlorophyll and Major Features of the South China Sea with Satellite Information
Published on: June 13, 2020
6.4K
Forecasting dryland vegetation condition months in advance through satellite data assimilation
Siyuan Tian1,2, Albert I J M Van Dijk3, Paul Tregoning4
1Research School of Earth Sciences, Australian National University, Canberra, 2601, ACT, Australia. siyuan.tian@anu.edu.au.
Nature Communications
|January 30, 2019
Summary
Forecasting dryland vegetation condition is improved by understanding accessible water storage. This eco-hydrological approach uses satellite data to predict vegetation health months in advance, aiding land management.
Area of Science:
- * Eco-hydrology and remote sensing applications in arid and semi-arid environments.
- * Climate and vegetation dynamics modeling for sustainable land management.
Background:
- * Dryland ecosystems exhibit high rainfall variability, significantly impacting vegetation health.
- * Predicting dryland vegetation condition is crucial for agriculture, drought relief, and fire management.
- * Accurate forecasting requires understanding subsurface moisture distribution and vegetation's water uptake capacity.
Purpose of the Study:
- * To develop a method for inferring vegetation-accessible water storage in drylands.
- * To demonstrate the capability of improving dryland vegetation condition forecasts.
- * To integrate satellite observations with eco-hydrological modeling for enhanced predictability.
Main Methods:
- * Assimilation of satellite-derived water presence data across different vertical domains into an eco-hydrological model.
- * Integration of vegetation observations with inferred accessible water storage.
- * Validation of the model's predictive skill for vegetation condition.
Main Results:
- * An apparent vegetation-accessible water storage variable was successfully inferred.
- * Incorporating this accessible storage significantly improved forecast skill for dryland vegetation condition.
- * Skilful forecasts were achieved several months in advance across most global drylands.
Conclusions:
- * Accessible water storage is a key predictor of dryland vegetation condition.
- * Integrating satellite data and eco-hydrological models enhances drought and vegetation forecasting.
- * This approach offers valuable insights for proactive land and resource management in water-scarce regions.
Related Concept Videos
01:20Sulfur Assimilation
336
Sulfur is an essential element in biological systems, contributing to synthesizing key biomolecules, including amino acids such as cysteine and methionine, and cofactors such as coenzyme A and biotin. Microorganisms primarily assimilate sulfur as sulfate (SO₄²⁻) from the environment, which must undergo a series of biochemical transformations before it can be incorporated into cellular components. As sulfate is highly oxidized, it must undergo assimilatory sulfate reduction to...
336
01:22Inorganic Nitrogen Assimilation
523
Nitrogen is an essential element in biological systems, forming a crucial component of proteins, nucleic acids, and other cellular constituents. Many bacteria and archaea acquire nitrogen in the form of nitrate (NO₃⁻) or ammonia (NH₃), which are then assimilated into biomolecules through specific enzymatic pathways.Assimilatory Nitrate ReductionWhen nitrate enters the cell, it undergoes a two-step reduction process known as assimilatory nitrate reduction. Initially, the enzyme...
523
01:11Energy of a Satellite in a Circular Orbit
3.0K
Thousands of artificial satellites orbit the Earth every day at various distances from the Earth. Satellites that orbit the Earth below an altitude of 1,600 km are considered to be orbiting in low-Earth orbit (LEO). Research satellites and Earth observation satellites are usually placed in LEO, and mostly orbit the Earth in elliptical orbits. Navigation satellites are placed in medium-Earth orbit (MEO), ranging from 2,000 km to 36,000 km from the surface of the Earth. Meanwhile, communication...
3.0K
01:16Circular Orbits and Critical Velocity for Satellites
5.5K
The Moon orbits around the Earth. In turn, the Earth (and other planets) orbit the Sun. The space directly above our atmosphere is filled with artificial satellites in orbit. One can examine the circular orbit, the simplest kind of orbit, to understand the relationship between the speed and the period of planets and satellites with respect to their positions and the bodies that they orbit.
Nicolaus Copernicus (1473-1543) first suggested that the Earth and all other planets orbit the Sun in...
Nicolaus Copernicus (1473-1543) first suggested that the Earth and all other planets orbit the Sun in...
5.5K
01:21Satellite Stem Cells and Muscular Dystrophy
2.4K
Satellite stem cells or myosatellite cells are quiescent stem cells that Alexander Mauro first identified in 1961. These cells are located between the sarcolemma, the plasma membrane of muscle fibers, and the basal lamina, the connective tissue sheath covering it. These mononucleated cells are activated in response to muscle injury, can transform into myoblasts, and may form or repair muscle fibers. Myosatellite cells can provide additional myonuclei for muscle regeneration or return to a...
2.4K
02:22Overview of Advanced Functional Groups
29.8K
Functional groups are groups of atoms with specific chemical properties that occur within organic molecules and are sometimes denoted as “R”. Functional groups can “functionalize” a compound by enabling it to adopt different physical and chemical properties.
Types of Advanced Functional Groups
The table below summarizes some of the major functional groups in organic chemistry.
29.8K