Wildfires burning in Chile

January 2nd, 2012
GOES-12 3.9 µm shortwave IR channel images (click image to play animation)

GOES-12 3.9 µm shortwave IR channel images (click image to play animation)

As a result of prolonged drought and a mid-summer heat wave across southern Chile, a number of wildfires were burning in parts of the region on 01 January02 January 2012 (surface analysis). GOES-12 3.9 µm shortwave IR images (above; click image to play animation) showed a number of fire “hot spots” (yellow to red color enhancement) between Concepcion (station identifier SCIE) and Chillan (station identifier SCCH) from the late afternoon on 01 January until the early morning hours on 02 January.

During the subsequent daytime hours, GOES-12 0.63 µm visible channel images (below; click image to play animation) revealed a long hazy smoke plume that was drifting northwestward out over the adjacent Pacific Ocean. As daytime heating increased, cumulus clouds with a few thunderstorms could also be seen developing farther inland over the higher terrain of the Andes Mountains.

GOES-12 0.63 µm visible channel images (click image to play animation)

GOES-12 0.63 µm visible channel images (click image to play animation)

Rawinsonde data from Santo Domingo (station identifier SCSN) at 12 UTC indicated that southeasterly winds existed near the top of the deep temperature inversion, between 741 hPa (2.6 km) and 700 hPa (3.1 km) — so this is likely the approximate altitude of the smoke plume seen drifting toward the northwest on the GOES-12 visible satellite imagery.

Santo Domingo, Chile rawinsonde data plot

Santo Domingo, Chile rawinsonde data plot

A high-resolution MODIS true color image of the fire smoke plume can be seen on the NASA Earth Observatory site.

Hurricane Adrian in the East Pacific

June 9th, 2011
GOES-12 0.63 µm visible channel images

GOES-12 0.63 µm visible channel images

 

Hurricane Adrian developed into a Category 3 hurricane early in the day on 09 June 2011. McIDAS images of GOES-12 0.63 µm visible channel data (above) initially showed a well-defined eye before it began to get partially obscured by the high clouds of a central dense overcast (CDO).

DMSP SSMIS 85 GHz microwave images from the CIMSS Tropical Cyclones site (below) revealed a distinct eye at 12:09 UTC and 14:56 UTC.

DMSP SSMIS 85 GHz microwave images

DMSP SSMIS 85 GHz microwave images

GOES 10.7 µm IR images (below) also briefly showed a well-defined eye early in the day, which later filled in a bit beneath the CDO as a curved band of cold high clouds began to wrap around the eastern and northern quadrants of the hurricane.

GOES 10.7 µm IR images

GOES 10.7 µm IR images

The circulation of Hurricane Adrian could be clearly seen on an AWIPS image of ASCAT scatterometer winds overlaid on a GOES IR image (below).

ASCAT scatterometer winds (overlaid on GOES IR image)

ASCAT scatterometer winds (overlaid on GOES IR image)

AWIPS images of the MIMIC Total Precipitable Water (TPW) product (below) showed that Adrian was tapping moisture from the Inter-Tropical Convergence Zone (ITCZ) / “Monsoon Trough”, which was located at approximately 10º North latitude over the eastern Pacific Ocean.

 

MIMIC Total Precipitable Water product

MIMIC Total Precipitable Water product

===== 10 June Update =====

Hurricane Adrian intensified to a Category 4 storm on 10 June 2011. 4-km resolution GOES 10.7 µm IR channel images (below; click image to play animation) continued to show a well-defined eye structure.

GOES 10.7 µm IR images (click image to play animation)

GOES 10.7 µm IR images (click image to play animation)

A closer view of the eye could be seen using 1-km resolution GOES visible channel images (below; click image to play animation).

GOES visible channel images (click image to play animation)

GOES visible channel images (click image to play animation)

The intensity of Hurricane Adrian was expected to decrease as the storm began to move over colder waters, as seen on an image of the Sea Surface Temperature (SST) analysis (below).

Sea Surface Temperature (SST) analysis

Sea Surface Temperature (SST) analysis

Puyehue-Cordón Caulle volcanic eruption in Chile

June 5th, 2011
GOES-12 0.65 µm visible channel images

GOES-12 0.65 µm visible channel images

An explosive eruption of the Puyehue-Cordón Caulle volcano in Chile occurred on 04 June 2011. GOES-12 0.65 µm visible channel images (above) showed a darker gray ash cloud punching above the meteorological cloud deck around 18:15 UTC, with the ash cloud quickly spreading southeastward and moving over Bariloche, Argentina (station identifier SAZS).

A comparison of GOES-12 3.9 µm shortwave IR and 10.7 µm IR window channel images (below) revealed a pronounced and persistent “hot spot” signature (dark black pixels) at the summit of the volcano on the shortwave IR images — while the long and narrow cold high-altitude volcanic cloud (exhibiting IR brightness temperatures around -60º C, darker red color enhancement) could be seen spreading southeastward for a great distance on the IR window images.

GOES-12 3.9 µm shortwave IR (top) and 10.7 µm IR window (bottom) images

GOES-12 3.9 µm shortwave IR (top) and 10.7 µm IR window (bottom) images

CIMSS activities in the GOES-R Proving Ground include the generation of real-time volcanic ash retrieval products (using Meteosat SEVIRI data as a proxy for GOES-R data), which showed a significant volcanic ash plume emerging over the Atlantic Ocean (below).

SEVIRI volcanic ash retrieval products

SEVIRI volcanic ash retrieval products