Spain's meteorologists face surge in online harassment over climate work

Spain's environment minister has escalated warnings about a troubling shift in how the country's climate scientists are treated online. Sara Aagesen, one of Spain's three deputy prime ministers, wrote to prosecutors this week flagging what she called "an alarming increase" in hate speech and coordinated attacks targeting meteorologists, climate researchers, and science communicators on social media.

The concern isn't abstract. Research examined by the ministry found that 17.6% of hostile messages posted on X (formerly Twitter) directed at these professionals included hate speech, personal attacks, and denigration. More striking: the same studies detected not just more attacks, but attacks that are intensifying in both frequency and aggression.

Rubén del Campo, a spokesperson for Spain's state meteorological office Aemet, put a human face on the pattern. "Although I know that my job means I get a lot of exposure, when you see messages attacking you and using your photo — often for made-up stuff you've never said — you feel bad," he told Spanish newspaper El País. It's the kind of comment that sounds small until you consider what it means: scientists who spend their careers communicating weather forecasts and climate data are now weighing whether it's worth the personal cost.

The research reveals something researchers call a "chilling effect." When scientists face sustained harassment, they withdraw. They post less. They interact with the public less. They're more cautious about what they communicate. The result isn't just harder on individuals — it narrows the information available to everyone else. "Social pressure and smear campaigns can discourage scientists from interacting with the public or even communicating their research openly," the studies note. "This can limit the advance of scientific knowledge and restrict public access to accurate and high-quality information."

The broader context matters here. A 2024 study found that climate denial posts made up nearly half of all climate-related discussions on X (49.1%), with hate speech appearing in roughly one in six posts. Spain isn't unique in this pattern, but the government's decision to formally alert prosecutors suggests they're treating it as a threshold issue — something that's crossed from "online noise" into territory that warrants institutional attention.

Aagesen's letter signals that Spain's government sees this as a public health problem for science itself. By documenting the pattern and involving law enforcement, the ministry is creating a record and establishing that harassment of scientists isn't just rude — it's something worth investigating. What happens next depends partly on how prosecutors respond, and partly on whether other institutions elsewhere start taking similar steps.