Russia's strategy is especially weak because it lets greenhouse gas emissions rise, experts say
The United States, the 28-nation European Union, Russia, Mexico, Switzerland, Norway and Gabon have so far submitted strategies to the United Nations, meant as the building blocks of a global deal to be agreed in December at a summit in Paris.
"We regret that so few ... have been submitted," said Miguel Arias Canete, European Climate Action and Energy Commissioner. So far, national plans cover about 30 percent of world emissions.
March 31 was a first, informal deadline for plans, known as Intended Nationally Determined Contributions (INDCs), that are meant to help slow the effects of climate change. Most nations are waiting to submit their plans.
The Climate Action Tracker (CAT), compiled by scientists, said pledges so far put the world on track for average temperatures in the year 2100 three to four degrees Celsius (5.4 to 7.2 degrees Fahrenheit) higher than they were in pre-industrial time. That is well above a U.N. goal of a maximum 2 degrees C (3.6F) rise.
"Hopefully, there can be a dynamic to increase ambition" in coming months, said Niklas Hoehne, a founding partner of the New Climate Institute, which helps compile the CAT.
CAT gave Russia an "inadequate" rating and assessed others as "medium". It said reports that Japan was considering cuts of only 20 percent by 2030 would also be "inadequate".
Russia's goal is to limit emissions to 25 to 30 percent below 1990 levels by 2030. But its emissions were 32 percent below the 1990 benchmark in 2012, a legacy of the collapse of Soviet-era smokestack industries, meaning a rise by 2030.