Tag Archives: spring

It’s finally springtime in the Northeast

Last time I posted, I commented on the fact that winter temperatures in New Hampshire were almost 7°C warmer in 2016 than 2015, and that “spring 2016 is just around the corner.” It turns out that spring has been a … Continue reading

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Friday favorites: Cool spring

This week has been abysmally cool and wet in Massachusetts. Buds are eager to burst into leaves as soon as we have a little warmth at Harvard Forest. Here the imminent green of new spring leaves vibrates against the orange … Continue reading

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Spring Challenge more results

Last week I described some initial results from the Spring Challenge. I showed how we used individual classifications to build a dataset for a single site in a a single year. And we discovered that using paired images 7 days … Continue reading

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Spring Challenge first results

Having all the pairs of spring images classified means I can now analyze them! In particular, I’m using these images to get a best estimate for the “start of spring” and the “end of spring”. These are metrics that are … Continue reading

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Friday favorites: North Carolina spring

Trees are putting out leaves at Alligator River National Wildlife Refuge in North Carolina.

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Friday favorites: The still waters of early spring

The still waters of Lake Crescent in early spring reflect the surrounding hills and mountains in Olympic National Park, Washington.

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Spring is just around the corner!

It’s been a really unusual winter, with almost no snow in the Northeast, and some incredibly warm temperatures. Last winter, at our research site in New Hampshire, the mean air temperature from January to mid-March was -8.5°C (17°F), and with … Continue reading

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Friday favorites: Michigan spring

With all the different colors, it might look like fall. But this is a spring picture taken at the University of Michigan Biological Station in May of last year. Note the yellowish color of the new leaves as they unfold.

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Friday favorites: First leaves

Spring leaves start emerging at Bartlett Forest in New Hampshire.

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Pairs of spring images

Spring is in the air. And for deciduous trees, spring means putting out new green leaves. Scientists still can’t predict with absolute accuracy the date that little green buds appear on trees, but they’ve figured out some of the things … Continue reading

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