摘要:Space weather forecasting is still in its infancy, but there have been enormous advances in the past 15 years. First-principles and physics-based models are now assimilating data, providing forecasts and “nowcasts” of space weather conditions surrounding Earth. Space weather products for end users are growing in sophistication and utility and are often accompanied by useful visual displays (Simpson, 2004). Several sources of space weather forecasts exist today, including research products and operational forecasts from civilian and Department of Defense sources.