blog authors

Welcome to the Kellylab blog

geospatial matters

Please read the UC Berkeley Computer Use Policy. Only members can post comments on this blog.

Monday
Sep292014

High resolution free DEM data released for Africa

SRTM 3 Arc-Second (approx. 90m) SRTM 1 Arc-Second (approx. 30m) Landsat 7 December 17, 2000

Just in time for class on topography and rasters tomorrow: new high res shuttle DEM data is being released for Africa. The image above shows the Niger River Delta in 90m res, 30m res, and landsat.

From the press release: In Africa, accurate elevation (topographic) data are vital for pursuing a variety of climate-related studies that include modeling predicted wildlife habitat change; promoting public health in the form of warning systems for geography and climate-related diseases (e.g. malaria, dengue fever, Rift Valley fever); and monitoring sea level rise in critical deltas and population centers, to name just a few of many possible applications of elevation data.

On September 23, the National Aeronautics and Space Administration (NASA), the National Geospatial-Intelligence Agency (NGA), and the U.S. Geological Survey (USGS, a bureau of the U.S. Department of the Interior) released a collection of higher-resolution (more detailed) elevation datasets for Africa. The datasets were released following the President’s commitment at the United Nations to provide assistance for global efforts to combat climate change. The broad availability of more detailed elevation data across most of the African continent through the Shuttle Radar Topography Mission (SRTM) will improve baseline information that is crucial to investigating the impacts of climate change on African communities.

Enhanced elevation datasets covering remaining continents and regions will be made available within one year, with the next release of data focusing on Latin America and the Caribbean region. Until now, elevation data for the continent of Africa were freely available to the public only at 90-meter resolution. The datasets being released today and during the course of the next year resolve to 30-meters and will be used worldwide to improve environmental monitoring, climate change research, and local decision support. These SRTM-derived data, which have been extensively reviewed by relevant government agencies and deemed suitable for public release, are being made available via a user-friendly interface on USGS’s Earth Explorer website.

Nice slider comparing the 90m to the 30m data here.

Thursday
Sep252014

Raining on the King Fire

wunderground mapWundermap has a nice interface where you can add fires to your animated weather radar map. I caught this snap as our rare September storm (an atmospheric river apparently) moved over the King fire this afternoon. It radically changed the flow of the smoke plume, which shifted from northeastly to northerly. According to Scott, who talked to Rob, it was dumping up at Blodgett. So we will see what this means for the fire tomorrow.

Friday
Sep192014

How Scotland voted

Reds are Yes, blues are NoHere is a map of voting results from yesterday's historic independence vote in Scotland. Overall the Nos carried the day - 55% - 45%. Interestingly, Motherwell and Hamilton, two towns in my family's life, were split. Motherwell voted Och Aye and Hamilton voted the Noo.

From http://www.ctvnews.ca/world/how-scotland-voted-map-of-referendum-results-1.2014138

Friday
Sep192014

King fire update

Blodgett looks like it is going to be OK, but the King fire is burning through the SNAMP Eldorado study area. This is where the SNAMP owl reasearchers are doing their work. We are getting a response from them to post on the SNAMP website.

Center for Forestry map of the King Fire

Inciweb (why don't they publish the fire boundary file any more????)

Carlin Starrs gets her perimeters from http://ftpinfo.nifc.gov/

Geomac - http://www.geomac.gov/asp-bin/GeoMACKML/getKML.aspx

and the NIFC FTP server at ftp://ftp.nifc.gov/Incident_Specific_Data/CALIF_N/!2014_FEDERAL_Incidents/CA-ENF-023461_King/IR/

We will keep our eyes on it.

And Happy 100th Anniversary Berkeley Forestry!

Tuesday
Sep162014

King fire near Blodgett Forest Research Station

From UC Center for Forestry.

9/16 16:30 - The King Fire started the evening of September 13 east of Pollock Pines. On 9/15, it grew to 3,900 acres. By the morning of 9/16, it was over 11,000 acres and 5% contained. 

As of the afternoon of the 16th, the fire is alarmingly close to Blodgett Forest Research Station. All staff are being evacuated.

We will provide updates here as they come in. We anticipate the perimeter update will be updated every 24 hours in the early morning (as the data becomes available).

The last update was 9/16 at 10:00AM.

EVACUATION INFORMATION CAN BE FOUND HERE http://inciweb.nwcg.gov/incident/4108/

For questions, please contact carlinstarrs@berkeley.edu

For more information visit: 

Tuesday
Sep092014

Meadow fire update, burning in Little Yosemite Valley

It's now on Inciweb. The Meadow fire is burning near Yosemite, at the east of Little Yosemite Valley.

From Yosemite NP:

As of 11-9:

The Meadow Fire has progressed rapidly and in multiple directions. In order to maintain the safety of park visitors and allow fire management operations to continue unimpeded, the Superintendent of Yosemite National Park is designating a portion of Yosemite Wilderness as closed. The area will be closed until further notice is given.

As of 11-8:

"Meadow (37 42.738 x 119 30.541 – Mariposa Co., 7,870’, August 16) A fire, that may be a spot fire, from the Meadow lightning-caused fire, was discovered at approximately 12:30 PM, Sunday September 7. The fire is approximately 2,582 acres. It is burning within the Little Yosemite Valley (LYV) on both sides of the Merced River. All trails in the area are closed. Approximately 100 hikers and backpackers were evacuated from the fire area in LYV. The fire is burning in Yosemite Wilderness. The High Sierra Camps were seasonally closed today."

Scott Stephens says it is growing fast. We will keep our eyes on it.

Monday
Sep082014

Fall 2014 class ideas...

Here are the tag clouds from this year's GIS class: the why, how and what of our upcoming semester's projects. Word clouds from Wordle.

The Why: what are the key problems class members want to focus on...

The How: possible methods we will use...

The What: some of the datasets that might be used...

Monday
Sep082014

New VTM reshot, from Tim Hanson

This one from Tim Hanson. The caption from the photos (286747. 286748, 286749, 286750) reads:

"Butte County. Panorama looking SW, S. SE and E from Neal Road. Note Juniperus californica in ravine. Woodland grass type of blue oak and digger pines with occasional Ceanothus cuneatus, Arctostaphylos manzanita and Rhus diversiloba."

There is still California juniper in the ravine, including far right of the new photo, which is uncommon in Butte County. The rare Monardella venosa grows in patches of dense clay soil in the flats of the canyon. The Wieslander picture was taken on 6/24/1933 and his picture was taken on 5/3/2011.

 

Sunday
Aug242014

That was a long, rolling quake

From Live EarthquakesWe felt the 6.0 quake here in Berkeley as a long, rolling, continual shimmy. Up in Napa it was considerably more than that. Lots of news about lost wine etc. There have been a number of small aftershocks since 3am, we haven't felt them here, but Napa valley is jumping this morning.

 

Wednesday
Aug202014

New VTM photo reshoots from Joyce - check it!

Joyce Gross is our most avid VTM photography buffs. Here are two new VTM reshoots for our viewing pleasure. Her original post here, and here are all her new photos on CalPhoto.

She says: This was the first VTM photo site I've found that required a hike to get there. Not only was the photo not taken from a road, but it was not taken from a trail. The hike from my car to the site was a little over a mile, but it felt like more. It was all uphill, and we didn't really know where we were going. The first 2/3 of the hike was along a narrow, rocky road (image below). The last third of the hike involved somewhat random wandering over rocks and around bushes towards a view we hoped to see but weren't sure exactly where it was. My Garmin GPS, and Gaia GPS on my iPad, were my friends on this hike, helping us get to the photo location and, especially, helping us get back. Thanks Joyce!

Upper end of French Lake and Black Buttes. One of the largest natural barren areas on the Colfax map.Joyce's photograph

 

French Lake and English Mt. Looking north, 45 degrees west. Large area of barren and semi-barren Quercus vaccinifolia.Joyce's photograph of French Lake