|
|
Chlorophyll in the Bay of Be
…
| Title |
Chlorophyll in the Bay of Bengal with Fluorescence |
| Abstract |
The following is an excerpt from (http://www-indoex.ucsd.edu). INDOEX [(The Indian Ocean Experiment)] addresses questions of climate change that are of high priority and of great value to the US and the international community. The project's goal is to study natural and anthropogenic climate forcing by aerosols and feedbacks on regional and global climate. This issue is at the core of the International Global Change Research Program and has been identified by IPCC as a major gap in the science of climate change prediction. |
| Completed |
2000-04-13 |
|
Chlorophyll in the Bay of Be
…
| Title |
Chlorophyll in the Bay of Bengal with Fluorescence |
| Abstract |
The following is an excerpt from (http://www-indoex.ucsd.edu). INDOEX [(The Indian Ocean Experiment)] addresses questions of climate change that are of high priority and of great value to the US and the international community. The project's goal is to study natural and anthropogenic climate forcing by aerosols and feedbacks on regional and global climate. This issue is at the core of the International Global Change Research Program and has been identified by IPCC as a major gap in the science of climate change prediction. |
| Completed |
2000-04-13 |
|
Chlorophyll in the Bay of Be
…
| Title |
Chlorophyll in the Bay of Bengal with Fluorescence |
| Abstract |
The following is an excerpt from (http://www-indoex.ucsd.edu). INDOEX [(The Indian Ocean Experiment)] addresses questions of climate change that are of high priority and of great value to the US and the international community. The project's goal is to study natural and anthropogenic climate forcing by aerosols and feedbacks on regional and global climate. This issue is at the core of the International Global Change Research Program and has been identified by IPCC as a major gap in the science of climate change prediction. |
| Completed |
2000-04-13 |
|
Chlorophyll in the Bay of Be
…
| Title |
Chlorophyll in the Bay of Bengal with Fluorescence |
| Abstract |
The following is an excerpt from (http://www-indoex.ucsd.edu). INDOEX [(The Indian Ocean Experiment)] addresses questions of climate change that are of high priority and of great value to the US and the international community. The project's goal is to study natural and anthropogenic climate forcing by aerosols and feedbacks on regional and global climate. This issue is at the core of the International Global Change Research Program and has been identified by IPCC as a major gap in the science of climate change prediction. |
| Completed |
2000-04-13 |
|
Floods in Southern India
| Title |
Floods in Southern India |
| Description |
Days of persistent rain caused widespread flooding in Southern India's Tamil Nadu state in late November 2005. The Moderate Resolution Imaging Spectroradiometer (MODIS [ http://modis.gsfc.nasa.gov ]) on NASA's Terra [ http://terra.nasa.gov/ ] satellite captured these two images, which contrast conditions before the floods on November 18, lower image, and during the floods on November 27, top. The images are shown in false color to make water easier to see. In this color combination, water is dark blue or black, plant-covered land is green, clouds are pale blue and white, and bare earth is tan. The images focus on the mouth of the Kollidam River, though the floods extend over a much larger region. Swollen with water, the river and other streams emptying into the Bay of Bengal spread across a wide section of the coast. This same section of coast was also impacted by the December 2004 Indian Ocean tsunami. According to the United Nations Development Program, well over 2 million people have been affected by flooding in Tamil Nadu. The floods have disrupted transportation and destroyed crops across the state. The MODIS Rapid Response Team provides daily images of India in a variety of resolutions. NASA image courtesy the MODIS Rapid Response Team at Goddard Space Flight Center. |
|
Haze along the Himalaya Fron
…
| Title |
Haze along the Himalaya Front Range |
| Description |
A river of haze follows the course of the Ganges River in northern India, flowing eastward along the base of the towering, snow-capped Himalaya Mountains (upper right) before turning south over Bangladesh and then spreading out in gray streamers over the Bay of Bengal in the Indian Ocean (lower right). Although the pollution comes from human activities,?agricultural fires, home heating sources that rely on wood, kerosene, or dung, and industrial and vehicle emissions?it lingers because of topography and atmospheric circulation patterns. In the winter phase of the Indian Ocean Monsoon, winds typically blow seaward, which carries the large, thick "brown cloud" of pollution far out over the ocean. Recently, NASA scientists announced that the visible particles of soot that give the polluted air its name aren't the only component of the brown cloud that the atmosphere transports over long distances. The plume also contains ozone, which is beneficial to humans when it is located way above the Earth in the stratosphere, but harmful when it is located closer to the Earth in the troposphere. Ozone spreads even farther away from the original source than the soot particles. Convection over the ocean sucks the ozone high into the air where it enters wider-scale atmospheric circulation patterns. These patterns spread the ozone westward across the Indian Ocean, Africa, and onward to the Atlantic Ocean. Along the way, the ozone from the Asian brown cloud gets mixed together with ozone from agricultural fires in Africa, as well as with ozone from the stratosphere which occasionally gets mixed down to lower altitudes. The long-range transport of ozone from these sources explains why such high levels of tropospheric ozone are observed in the air over the South Atlantic Ocean, far from the source of the emissions. NASA image created by Jesse Allen, Earth Observatory, using data obtained from the MODIS Rapid Response team. |
|
Fires in Eastern India
| Title |
Fires in Eastern India |
| Description |
Smoke hangs over eastern India and the Indian Ocean in this true-color Moderate Resolution Imaging Spectroradiometer (MODIS) from the Aqua satellite on March 8, 2003. Dozens of fires were detected by MODIS and are marked with red dots. At upper right, sediments in the waters of the Mouths of the Ganges River color the Bay of Bengal light tan. At far upper right is Bangladesh. The high-resolution image provided above is 500 meters per pixel. The MODIS Rapid Response System provides this image at MODIS' maximum spatial resolution of 250 meters. Image courtesy Jacques Descloitres, MODIS Rapid Response Team at NASA GSFC |
|
Tropical Cyclone 01B
| Title |
Tropical Cyclone 01B |
| Description |
During the past few days (May 15-19, 2003) Tropical Cyclone 01B developed in the Indian Ocean and achieved hurricane status for a few hours. However, the storm has produced copious amounts of rainfall leading to a large loss of life in Sri Lanka. The heavy rain accumulation, exceeding nine inches, is shown in the accompanying image. The rain accumulation map was produced using the TRMM-based, near-real time Multi-satellite Precipitation Analysis (MPA) at the NASA Goddard Space Flight Center. NASA's TRMM or Tropical Rainfall Measurement Mission features a spaceborne weather radar built by the Japanese space agency NASDA. In operation for five years, TRMM has provided unprecedented views of tropical rain events around the globe, and now also provides information on flash flood potential (accessed by visiting the TRMM website at trmm.gsfc.nasa.gov). In this image, note the huge rainfall footprint produced by Tropical Cyclone 01B as it intensified over the Bay of Bengal. At first, it would appear that the isolated rainfall pocket located over Sri Lanka bears little relation to the burgeoning tropical storm. However, there is evidence to suggest that the rainstorms that deluged Sri Lanka were associated with an outer "feeder band" of moisture entering the tropical cyclone from the southwest. This image was generated by Hal Pierce of the NASA Goddard Space Flight Center. |
|
Tropical Cyclone Gonu
| Title |
Tropical Cyclone Gonu |
| Description |
This data visualization shows Tropical Cyclone Gonu and its spiral pattern of winds as recorded by NASA's QuikSCAT [ http://winds.jpl.nasa.gov/missions/quikscat/index.cfm ] satellite on June 4, 2007. Varying wind speeds within the storm form a bull's-eye of color, with the highest wind speeds shown in purple in the center of the storm and gradually decreasing speeds radiating outward. Wind direction is depicted with small barbs. White barbs point to areas of heavy rain. You might expect to see such a well-developed storm hovering over the warm waters of the Caribbean or in the South Pacific, but Tropical Cyclone Gonu showed up in an unusual place. On June 4, 2007, when it was observed by the QuikSCAT satellite, Cyclone Gonu was approaching the northeastern shore of Oman, a region better known for hot desert conditions. Though rare, cyclones like Gonu are not unheard of in the northern Indian Ocean basin. Most cyclones that form in the region form over the Bay of Bengal, east of India. Those that take shape over the Arabian Sea, west of the Indian peninsula, tend to be small and fizzle out before coming ashore. Cyclone Gonu is a rare exception. As of June 4, 2007, the powerful storm had reached a dangerous Category 4 [ http://www.nhc.noaa.gov/aboutsshs.shtml ] status, and it was forecast to graze Oman's northeastern shore, following the coastline of the Gulf of Oman. According to storm statistics maintained on Unisys Weather, [ http://weather.unisys.com/hurricane/ ], the last storm of this size to form over the Arabian Sea was Cyclone 01A, which tracked northwest along the coast of India between May 21 and May 28, 2001. Unlike Gonu's forecasted track, Cyclone 01A's path never brought it ashore. Ground or aircraft-based measurements of the wind strength of Cyclone Gonu would likely show sustained winds significantly higher than those estimated by QuikSCAT. QuikSCAT uses a scatterometer, a device that sends pulses of microwave energy through the atmosphere to the ocean surface and measures the energy that bounces back from the wind-roughened surface. The energy of the microwave pulses changes depending on wind speed and direction, giving scientists a way to monitor wind around the world. This technique does not work over land, but allows measurements in storms over oceans. Wind speeds in trropical cyclones, however, are difficult for QuikSCAT to measure. To relate the radar signal the sensor measures to actual wind speed, scientists compare measurements taken from buoys and other ground stations to data the satellite acquired at the same time and place. Because the high wind speeds generated by cyclones are rare, scientists do not have enough corresponding ground information to know how to translate data from the satellite for wind speeds above 50 knots (about 93 km/hr, or 58 mph). Also, the unusually heavy rain found in a cyclone distorts the microwave pulses in a number of ways, making a conversion to accurate wind speed difficult. Instead, the scatterometer provides a nice picture of the relative wind speeds within the storm and shows wind direction. NASA image courtesy of David Long, Brigham Young University, on the QuikSCAT Science Team [ http://winds.jpl.nasa.gov/ ], and the Jet Propulsion Laboratory. |
|
Tropical Cyclone Gonu
| Title |
Tropical Cyclone Gonu |
| Description |
MODIS Rapid Response Team, [ http://rapidfire.sci.gsfc.nasa.gov ] Goddard Space Flight Center., You might expect to see a storm with near-perfect symmetry and a well-defined eye hovering over the warm waters of the Caribbean or in the South Pacific, but Tropical Cyclone Gonu showed up in an unusual place. On June 4, 2007, when the Moderate Resolution Imaging Spectroradiometer (MODIS [ http://modis.gsfc.nasa.gov ]) on NASA's Aqua [ http://aqua.nasa.gov/ ] satellite captured this image, Tropical Cyclone Gonu was approaching the northeastern shore of Oman, a region better known for hot desert conditions. Though rare, cyclones like Gonu are not unheard of in the northern Indian Ocean basin. Most cyclones that form in the region form over the Bay of Bengal, east of India. Those that take shape over the Arabian Sea, west of the Indian peninsula, tend to be small and fizzle out before coming ashore. Cyclone Gonu is a rare exception. As of June 4, 2007, the powerful storm had reached a dangerous Category 4 [ http://www.nhc.noaa.gov/aboutsshs.shtml ] status, and it was forecast to graze Oman's northeastern shore, following the Gulf of Oman. According to storm statistics maintained on Unisys Weather, [ http://weather.unisys.com/hurricane/ ] the last storm of this size to form over the Arabian Sea was Cyclone 01A, which tracked northwest along the coast of India between May 21 and May 28, 2001. Unlike Gonu's forecasted track, Cyclone 01A's path never brought it ashore. MODIS acquired this photo-like image at 12:00 p.m. local time (9:00 UTC), a few hours after the Joint Typhoon Warning Center [ https://metocph.nmci.navy.mil/jtwc.php ] estimated Gonu's sustained winds to be over 240 kilometers per hour (145 miles per hour). The satellite image confirms that Gonu was a super-powerful cyclone. The storm has the hallmark tightly wound arms that spiral around a well-defined, circular eye. The eye is surrounded by a clear wall of towering clouds that cast shadows on the surrounding clouds. Called hot towers, [ http://earthobservatory.nasa.gov/Newsroom/NewImages/images.php3?img_id=17662 ] these clouds are a sign of the powerful uplift that feeds the storm. The symmetrical spirals, clear eye, and towering clouds are all features regularly seen in satellite images of other particularly powerful cyclones, which are also known as typhoons or hurricanes when they form in other parts of the world. The high-resolution image provided above is at MODIS' full spatial resolution (level of detail) of 250 meters per pixel. The MODIS Rapid Response System provides this image at additional resolutions. [ http://rapidfire.sci.gsfc.nasa.gov/gallery/?2007155-0604/Gonu.A2007155.0900 ] You can download a 250-meter-resolution Cyclone Gonu KMZ file [ http://earthobservatory.nasa.gov/NaturalHazards/Archive/Jun2007/Gonu.A2007155.0900.250m.kmz ] for use with Google Earth. [ http://earth.google.com/download-earth.html ] NASA image by Jeff Schmaltz, |
|
Tropical Cyclone Gonu
| Title |
Tropical Cyclone Gonu |
| Description |
A storm with near-perfect symmetry and a well-defined eye hovering over the warm waters of the Caribbean or in the South Pacific is not unusual, but Tropical Cyclone Gonu showed up in a rather different place: the Arabian Sea. Though rare, cyclones like Gonu are not unheard of in the northern Indian Ocean basin. Most cyclones that form in the region form over the Bay of Bengal, east of India. Those that take shape over the Arabian Sea, west of the Indian peninsula, tend to be small and fizzle out before coming ashore. Cyclone Gonu was a rare exception. According to storm statistics maintained on Unisys Weather, [ http://weather.unisys.com/hurricane/ ] the last storm of this size to form over the Arabian Sea was Cyclone 01A, which tracked northwest along the coast of India between May 21 and May 28, 2001. Unlike Gonu's forecasted track, Cyclone 01A's path never brought it ashore. At 9:35 a.m. local time (06:35 UTC) on June 5, 2007, when the Moderate Resolution Imaging Spectroradiometer (MODIS [ http://modis.gsfc.nasa.gov ]) on NASA's Terra [ http://terra.nasa.gov/ ] satellite captured this image, Tropical Cyclone Gonu was approaching the northeastern shore of Oman. At this time, the powerful storm had reached a dangerous Category 4 [ http://www.nhc.noaa.gov/aboutsshs.shtml ] status. Sustained winds were measured at 250 kilometers per hour (155 miles per hour) according to the University of Hawaii's Tropical Storm Information Center, [ http://www.solar.ifa.hawaii.edu/Tropical/ ] at the time of this MODIS image. The storm has the hallmark tightly wound arms that spiral around a well-defined, circular eye. The eye is surrounded by a wall of towering clouds that cast shadows on the surrounding clouds. Called hot towers, [ http://earthobservatory.nasa.gov/Newsroom/NewImages/images.php3?img_id=17662 ], these clouds are a sign of the powerful uplift that feeds the storm. The symmetrical spirals, distinct eye, and towering clouds are all features regularly seen in satellite images of other particularly powerful cyclones, which are also known as typhoons or hurricanes when they form in other parts of the world. The forecast as of June 5 called for the storm to graze Oman's shore, but with the center of the storm staying offshore in the Gulf of Oman. The storm's first landfall was predicted to be in southern Iran. The cooler water along the Oman coast was expected to rob the storm of some of its intensity, and it was predicted to strike the Iranian coast at around Category 1 strength. If, however, the forecast track is not quite right and the storm stays farther from shore over shallower and much warmer waters in the Gulf of Oman, it could make landfall while still packing Category 3 winds. In either case, communities along the Gulf of Oman are poorly prepared for hurricanes, given their rarity, and severe damage to cities and oil platforms is possible due to winds and storm surge. The high-resolution image provided above is at MODIS' full spatial resolution (level of detail) of 250 meters per pixel. The MODIS Rapid Response System provides this image at additional resolutions. [ http://rapidfire.sci.gsfc.nasa.gov/gallery/?2007156-0605/Gonu.A2007156.0635 ] You can download a 250-meter-resolution Cyclone Gonu KMZ file [ http://earthobservatory.nasa.gov/NaturalHazards/Archive/Jun2007/Gonu.A2007156.0635.250m.kmz ] for use with Google Earth. [ http://earth.google.com/download-earth.html ] NASA image by Jeff Schmaltz, MODIS Rapid Response Team, [ http://rapidfire.sci.gsfc.nasa.gov ] Goddard Space Flight Center. |
|
Tropical Cyclone Gonu: Natur
…
nasa, nasanaturalhazards
You might expect to see a st
…
gonu_amo_2007155
| mediatype |
IMAGE |
| mediatype |
image |
| date |
2007-06-04 |
| creator |
NASA -- NASA Image Of The Day |
| identifier |
gonu_amo_2007155 |
|
Cyclone Nargis: Natural Haza
…
nasa, nasanaturalhazards
The recent formation of Trop
…
nargis_trmm_2008119
| mediatype |
IMAGE |
| mediatype |
image |
| date |
2008-04-28 |
| creator |
NASA -- NASA Image Of The Day |
| identifier |
nargis_trmm_2008119 |
|
Tropical Cyclone Gonu: Natur
…
nasa, nasanaturalhazards
This data visualization show
…
gonu_qsc_2007155
| mediatype |
IMAGE |
| mediatype |
image |
| date |
2007-06-04 |
| creator |
NASA -- NASA Image Of The Day |
| identifier |
gonu_qsc_2007155 |
|
Fires in Eastern India: Natu
…
nasa, nasanaturalhazards
Smoke hangs over eastern Ind
…
India.AMOA2003067
| mediatype |
IMAGE |
| mediatype |
image |
| date |
2003-03-08 |
| creator |
NASA -- NASA Image Of The Day |
| identifier |
India.AMOA2003067 |
|
Floods in Southern India: Na
…
nasa, nasanaturalhazards
Days of persistent rain caus
…
India_TMO_2005331
| mediatype |
IMAGE |
| mediatype |
image |
| date |
2005-11-27 |
| creator |
NASA -- NASA Image Of The Day |
| identifier |
India_TMO_2005331 |
|
Cyclone Brings Flooding to S
…
nasa, nasaimageofthedaygalle
…
During the past few days (Ma
…
sri_lanka_may03_flood
| mediatype |
IMAGE |
| mediatype |
image |
| date |
2003-05-19 |
| creator |
NASA -- Image courtesy Hal Pierce, TRMM Science Team, NASA Goddard Space Flight Center |
| identifier |
sri_lanka_may03_flood |
|
Tropical Cyclone Gonu: Image
…
nasa, nasaimageofthedaygalle
…
You might expect to see a st
…
ge_07743
| mediatype |
IMAGE |
| mediatype |
image |
| date |
2007-06-04 |
| creator |
NASA -- NASA image by Jeff Schmaltz, rapidfire.sci.gsfc.nasa.gov MODIS Rapid Response Team, Goddard Space Flight Center. |
| identifier |
ge_07743 |
|
Tropical Cyclone Gonu: Image
…
nasa, nasaimageofthedaygalle
…
You might expect to see a st
…
ge_07743
| mediatype |
IMAGE |
| mediatype |
image |
| date |
2007-06-04 |
| creator |
NASA -- NASA image by Jeff Schmaltz, rapidfire.sci.gsfc.nasa.gov MODIS Rapid Response Team, Goddard Space Flight Center. |
| identifier |
ge_07743 |
|
Tropical Cyclone Gonu: Natur
…
nasa, nasanaturalhazards
A storm with near-perfect sy
…
gonu_tmo_2007156
| mediatype |
IMAGE |
| mediatype |
image |
| date |
2007-06-05 |
| creator |
NASA -- NASA Image Of The Day |
| identifier |
gonu_tmo_2007156 |
|
Haze along the Himalaya Fron
…
nasa, nasanaturalhazards
A river of haze follows the
…
aqua_eindia_16dec04
| mediatype |
IMAGE |
| mediatype |
image |
| date |
2004-12-16 |
| creator |
NASA -- NASA Image Of The Day |
| identifier |
aqua_eindia_16dec04 |
|
NASA/French Satellite Data R
…
PIA07219
Sol (our sun)
Altimeter
| Title |
NASA/French Satellite Data Reveal New Details of Tsunami |
| Original Caption Released with Image |
Displayed in blue color is the height of sea surface (shown in blue) measured by the Jason satellite two hours after the initial magnitude 9 earthquake hit the region (shown in red) southwest of Sumatra on December 26, 2004. The data were taken by a radar altimeter onboard the satellite along a track traversing the Indian Ocean when the tsunami waves had just filled the entire Bay of Bengal (see the model simulation inset image). The data shown are the changes of sea surface height from previous observations made along the same track 20-30 days before the earthquake, reflecting the signals of the tsunami waves. The maximum height of the leading wave crest was about 50 cm (or 1.6 ft), followed by a trough of sea surface depression of 40 cm. The directions of wave propagation along the satellite track are shown by the blue arrows. "Model Simulation:" Simulated changes of sea surface height caused by the earthquake two hours after the initial shock. The simulation was performed using a computer model and provided for public access via internet by Kenji Satake, National Institute of Advanced Industrial Science and Technology, Japan (http://www.ioc.unesco.org/itsu/templates/itsu/images/animation.gif). Wave crests are shown in red and troughs in blue. The track traversed by the Jason satellite was also shown. The simulated crests and troughs along the track are in agreement with the satellite observations. The map provides a basin-wide perspective for interpreting the satellite observations along a single track. |
|
India and Ceylon as seen fro
…
| Title |
India and Ceylon as seen from Gemini 11 spacecraft |
| Description |
India and Ceylon as seen from the orbiting Gemini 11 spacecraft at an altitude of 410 nautical miles during its 26th revolution of the earth. The Indian Ocean is at bottom of picture, at left center is Arabian Sea, and at upper right is Bay of Bengal. The Maldive Islands are near nose of spacecraft. |
| Date Taken |
1966-09-14 |
|
Indian Ocean, Maldive Island
…
| Title |
Indian Ocean, Maldive Islands, India, and Sri Lanka |
| Description |
This scene shows a fantastic view of the Indian Ocean with oblique views of the southern portion of India, Palk Strait and Sri Lanka (1.5N, 77.5E). The bottom portion of the photo shows the complete chain of the Maldive Islands. This is a rare detailed view of the atolls that form the Maldives. The dusty atmosphere over India is clearly visible as it extends towards the Bay of Bengal but the atmosphere over the Maldives appears to be clear at this time. |
| Date Taken |
1990-04-29 |
|
|
