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Low-cost sensors (LCS) are increasingly being used to measure fine particulate matter (PM2.5) concentrations in cities around the world. One of the most commonly deployed LCS is the PurpleAir with about 15,000 sensors deployed in the United…

Stochastic parametrisations are used in weather and climate models to improve the representation of unpredictable unresolved processes. When compared to a deterministic model, a stochastic model represents `model uncertainty', i.e., sources…

大气与海洋物理 · 物理学 2020-04-22 Hannah M. Christensen

Due to the significant air pollution problem, monitoring and prediction for air quality have become increasingly necessary. To provide real-time fine-grained air quality monitoring and prediction in urban areas, we have established our own…

信号处理 · 电气工程与系统科学 2018-11-07 Zixuan Bai , Zhiwen Hu , Kaigui Bian , Lingyang Song

Gaussian Process Regression (GPR) is a popular regression method, which unlike most Machine Learning techniques, provides estimates of uncertainty for its predictions. These uncertainty estimates however, are based on the assumption that…

机器学习 · 计算机科学 2024-08-29 Harris Papadopoulos

Current climate models often struggle with accuracy because they lack sufficient resolution, a limitation caused by computational constraints. This reduces the precision of weather forecasts and long-term climate predictions. To address…

大气与海洋物理 · 物理学 2024-10-03 Adib Bazgir , Yuwen Zhang

Climate change projections for boreal winter precipitation in Tropical America has beenaddressed by statistical downscaling (SD) using the principal component regression with sea-level pressure (SLP) as the predictor variable. The SD model…

Methods for forecasting time series adhering to linear constraints have seen notable development in recent years, especially with the advent of forecast reconciliation. This paper extends forecast reconciliation to the open question of…

统计方法学 · 统计学 2025-10-27 Daniele Girolimetto , Anastasios Panagiotelis , Tommaso Di Fonzo , Han Li

This study uses a deep learning approach to forecast ozone concentrations over Seoul, South Korea for 2017. We employ a deep convolutional neural network (CNN). We apply this method to predict the hourly ozone concentration on each day for…

大气与海洋物理 · 物理学 2019-02-01 Ebrahim Eslami , Yunsoo Choi , Yannic Lops , Alqamah Sayeed

Supervised learning with Earth observation inputs is often limited by the sparsity of high-quality labeled or in-situ measured data to use as training labels. With the abundance of geographic data products, in many cases there are variables…

计算机视觉与模式识别 · 计算机科学 2026-04-22 Zhongying Wang , Kevin Lane , Levi Cai , Morteza Karimzadeh , Esther Rolf

Seasonal climate forecasts are commonly based on model runs from fully coupled forecasting systems that use Earth system models to represent interactions between the atmosphere, ocean, land and other Earth-system components. Recently,…

Accurate cyclone forecasting is essential for minimizing loss of life, infrastructure damage, and economic disruption. Traditional numerical weather prediction models, though effective, are computationally intensive and prone to error due…

机器学习 · 计算机科学 2025-09-30 Ethan Zachary Lo , Dan Chie-Tien Lo

In this paper, we investigate Gaussian process regression models where inputs are subject to measurement error. In spatial statistics, input measurement errors occur when the geographical locations of observed data are not known exactly.…

统计方法学 · 统计学 2015-06-30 Daniel Cervone , Natesh S. Pillai

Multi-model ensemble analysis integrates information from multiple climate models into a unified projection. However, existing integration approaches based on model averaging can dilute fine-scale spatial information and incur bias from…

应用统计 · 统计学 2023-04-12 Trevor Harris , Bo Li , Ryan Sriver

Weather forecasting centers currently rely on statistical postprocessing methods to minimize forecast error. This improves skill but can lead to predictions that violate physical principles or disregard dependencies between variables, which…

大气与海洋物理 · 物理学 2023-05-23 Francesco Zanetta , Daniele Nerini , Tom Beucler , Mark A. Liniger

Machine learning (ML) in the representation of molecular-orbital-based (MOB) features has been shown to be an accurate and transferable approach to the prediction of post-Hartree-Fock correlation energies. Previous applications of MOB-ML…

化学物理 · 物理学 2023-03-28 Lixue Cheng , Nikola B. Kovachki , Matthew Welborn , Thomas F. Miller

We report a data-parsimonious machine learning model for short-term forecasting of solar irradiance. The model inputs include sky camera images that are reduced to scalar features to meet data transmission constraints. The output irradiance…

机器学习 · 计算机科学 2025-03-25 Joshua Edward Hammond , Ricardo A. Lara Orozco , Michael Baldea , Brian A. Korgel

According to a recent investigation, an estimated 33-50% of the world's coral reefs have undergone degradation, believed to be as a result of climate change. A strong driver of climate change and the subsequent environmental impact are…

机器学习 · 计算机科学 2019-06-11 Shubhankar Deshpande , Brian D. Bue , David R. Thompson , Vijay Natraj , Mario Parente

In the regression problem, L1 and L2 are the most commonly used loss functions, which produce mean predictions with different biases. However, the predictions are neither robust nor adequate enough since they only capture a few conditional…

机器学习 · 计算机科学 2019-11-14 Faen Zhang , Xinyu Fan , Hui Xu , Pengcheng Zhou , Yujian He , Junlong Liu

Air pollution (AP) poses a great threat to human health, and people are paying more attention than ever to its prediction. Accurate prediction of AP helps people to plan for their outdoor activities and aids protecting human health. In this…

机器学习 · 计算机科学 2025-02-05 Iat Hang Fong , Tengyue Li , Simon Fong , Raymond K. Wong , Antonio J. Tallón-Ballesteros

Maternal exposure to environmental chemicals during pregnancy can alter birth and children's health outcomes. Research seeks to identify critical windows, time periods when the exposures can change future health outcomes, and estimate the…

统计方法学 · 统计学 2022-04-14 Daniel Mork , Ander Wilson
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