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Posted on March 3, 2024 (Updated on July 9, 2025)

Unveiling the Hidden Treasures: Exploring Artefacts in PERSIANN-CCS Earth Observation Data

Outdoor Gear

Understanding Artifacts in PERSIANN-CCS Data

1. Introduction

The PERSIANN-CCS (Precipitation Estimation from Remotely Sensed Information using Artificial Neural Networks-Cloud Classification System) is a widely used satellite-based dataset providing global precipitation estimates. It plays a crucial role in various applications related to Earth observation and Earth science, such as hydrological modeling, climate studies, and weather forecasting. However, like any other dataset, PERSIANN-CCS is not without its limitations. A common problem that researchers and scientists encounter when working with this dataset is the presence of artifacts. Artifacts are anomalies or errors that can occur in the data and affect the accuracy and reliability of precipitation estimates. In this article, we examine the different types of artifacts that can be observed in the PERSIANN-CCS data and discuss their implications.

2. Spatial artifacts

FAQs

Q: Artefacts in PERSIANN-CCS data

A: PERSIANN-CCS data, which stands for Precipitation Estimation from Remotely Sensed Information using Artificial Neural Networks – Cloud Classification System, can have certain artefacts. These artefacts are known as biases or errors that can affect the accuracy of the precipitation estimates derived from the data.

Q: What are some common artefacts in PERSIANN-CCS data?

A: Some common artefacts in PERSIANN-CCS data include false precipitation detection, underestimation or overestimation of precipitation intensity, and spatial discontinuities in the precipitation patterns.

Q: What causes false precipitation detection in PERSIANN-CCS data?

A: False precipitation detection in PERSIANN-CCS data can be caused by various factors, such as errors in cloud classification algorithms, contamination from non-meteorological sources (e.g., surface reflections), or limitations in the satellite sensors used for data acquisition.

Q: How does PERSIANN-CCS data sometimes underestimate or overestimate precipitation intensity?

A: PERSIANN-CCS data can underestimate or overestimate precipitation intensity due to factors like limitations in satellite resolution, errors in the neural network-based estimation algorithms, or the presence of complex meteorological conditions that are challenging to capture accurately.

Q: Why do spatial discontinuities occur in the precipitation patterns derived from PERSIANN-CCS data?

A: Spatial discontinuities in PERSIANN-CCS data can occur due to various reasons, including the interpolation of satellite observations, limitations in the cloud classification algorithms, or the presence of sharp gradients in precipitation intensity across the study area.

Q: How can one mitigate the effects of artefacts in PERSIANN-CCS data?

A: Mitigating the effects of artefacts in PERSIANN-CCS data can be challenging but can be achieved through various approaches. These include using statistical bias correction methods, integrating the data with ground-based observations for validation, conducting quality control checks, and applying post-processing techniques to improve the accuracy of the precipitation estimates.

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