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Merge pull request #5163 from nasa-gibs/release
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Release to Main - v4.34.0
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ryanweiler92 committed May 1, 2024
2 parents 9dc656d + 6668668 commit a0d9713
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<?xml version="1.0" encoding="utf-8"?>
<ColorMaps xmlns:xsi="http:https://www.w3.org/2001/XMLSchema-instance"
xsi:noNamespaceSchemaLocation="http:https://gibs.earthdata.nasa.gov/schemas/ColorMap_v1.3.xsd">
<ColorMap title="Sentinel-3A Orbital Track">
<Entries>
<ColorMapEntry rgb="3,17,252" sourceValue="200" transparent="false" ref="1" />
</Entries>
<Legend type="classification">
<LegendEntry rgb="3,17,252" id="1" tooltip="Acquisition Time (UTC)" label="Acquisition Time (UTC)" showLabel="true" />
</Legend>
</ColorMap>
</ColorMaps>
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<?xml version="1.0" encoding="utf-8"?>
<ColorMaps xmlns:xsi="http:https://www.w3.org/2001/XMLSchema-instance"
xsi:noNamespaceSchemaLocation="http:https://gibs.earthdata.nasa.gov/schemas/ColorMap_v1.3.xsd">
<ColorMap title="Sentinel-3A Orbital Track">
<Entries>
<ColorMapEntry rgb="3,17,252" sourceValue="200" transparent="false" ref="1" />
</Entries>
<Legend type="classification">
<LegendEntry rgb="3,17,252" id="1" tooltip="Acquisition Time (UTC)" label="Acquisition Time (UTC)" showLabel="true" />
</Legend>
</ColorMap>
</ColorMaps>
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<?xml version="1.0" encoding="utf-8"?>
<ColorMaps xmlns:xsi="http:https://www.w3.org/2001/XMLSchema-instance"
xsi:noNamespaceSchemaLocation="http:https://gibs.earthdata.nasa.gov/schemas/ColorMap_v1.3.xsd">
<ColorMap title="Sentinel-3B Orbital Track">
<Entries>
<ColorMapEntry rgb="245,66,138" sourceValue="200" transparent="false" ref="1" />
</Entries>
<Legend type="classification">
<LegendEntry rgb="245,66,138" id="1" tooltip="Acquisition Time (UTC)" label="Acquisition Time (UTC)" showLabel="true" />
</Legend>
</ColorMap>
</ColorMaps>
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<?xml version="1.0" encoding="utf-8"?>
<ColorMaps xmlns:xsi="http:https://www.w3.org/2001/XMLSchema-instance"
xsi:noNamespaceSchemaLocation="http:https://gibs.earthdata.nasa.gov/schemas/ColorMap_v1.3.xsd">
<ColorMap title="Sentinel-3B Orbital Track">
<Entries>
<ColorMapEntry rgb="245,66,138" sourceValue="200" transparent="false" ref="1" />
</Entries>
<Legend type="classification">
<LegendEntry rgb="245,66,138" id="1" tooltip="Acquisition Time (UTC)" label="Acquisition Time (UTC)" showLabel="true" />
</Legend>
</ColorMap>
</ColorMaps>
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The MODIS Brightness Temperature (Band 31, Day) layer is the brightness temperature, measured in Kelvin (K), calculated from the top-of-the-atmosphere radiances. It does not provide an accurate temperature of either clouds nor the land surface, but it does show relative temperature differences which can be used to distinguish features both in clouds and over clear land. It can be used to distinguish land, sea ice, and open water over the polar regions during winter (in cloudless areas).
The MODIS Brightness Temperature (Band 31, Day) layer is the brightness temperature, measured in Kelvin (K), calculated from the top-of-the-atmosphere radiances. It does not provide an accurate temperature of either clouds or the land surface, but it does show relative temperature differences which can be used to distinguish features both in clouds and over clear land. It can be used to distinguish land, sea ice, and open water over the polar regions during winter (in cloudless areas).

The MODIS Brightness Temperature layer is calculated from MODIS Calibrated Radiances and is available from both the Terra (MOD02) and Aqua (MYD02) satellites. The sensor and imagery resolution is 1 km, and the temporal resolution is daily.

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The MODIS Brightness Temperature (Band 31, Night) layer is the brightness temperature, measured in Kelvin (K), calculated from the top-of-the-atmosphere radiances. It does not provide an accurate temperature of either clouds nor the land surface, but it does show relative temperature differences which can be used to distinguish features both in clouds and over clear land. It can be used to distinguish land, sea ice, and open water over the polar regions during winter (in cloudless areas).
The MODIS Brightness Temperature (Band 31, Night) layer is the brightness temperature, measured in Kelvin (K), calculated from the top-of-the-atmosphere radiances. It does not provide an accurate temperature of either clouds or the land surface, but it does show relative temperature differences which can be used to distinguish features both in clouds and over clear land. It can be used to distinguish land, sea ice, and open water over the polar regions during winter (in cloudless areas).

The MODIS Brightness Temperature layer is calculated from MODIS Calibrated Radiances and is available from both the Terra (MOD02) and Aqua (MYD02) satellites. The sensor and imagery resolution is 1 km, and the temporal resolution is daily.

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The MODIS Brightness Temperature (Band 31, Day) layer is the brightness temperature, measured in Kelvin (K), calculated from the top-of-the-atmosphere radiances. It does not provide an accurate temperature of either clouds nor the land surface, but it does show relative temperature differences which can be used to distinguish features both in clouds and over clear land. It can be used to distinguish land, sea ice, and open water over the polar regions during winter (in cloudless areas).
The MODIS Brightness Temperature (Band 31, Day) layer is the brightness temperature, measured in Kelvin (K), calculated from the top-of-the-atmosphere radiances. It does not provide an accurate temperature of either clouds or the land surface, but it does show relative temperature differences which can be used to distinguish features both in clouds and over clear land. It can be used to distinguish land, sea ice, and open water over the polar regions during winter (in cloudless areas).

The MODIS Brightness Temperature layer is calculated from MODIS Calibrated Radiances and is available from both the Terra (MOD02) and Aqua (MYD02) satellites. The sensor and imagery resolution is 1 km, and the temporal resolution is daily.

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The MODIS Brightness Temperature (Band 31, Night) layer is the brightness temperature, measured in Kelvin (K), calculated from the top-of-the-atmosphere radiances. It does not provide an accurate temperature of either clouds nor the land surface, but it does show relative temperature differences which can be used to distinguish features both in clouds and over clear land. It can be used to distinguish land, sea ice, and open water over the polar regions during winter (in cloudless areas).
The MODIS Brightness Temperature (Band 31, Night) layer is the brightness temperature, measured in Kelvin (K), calculated from the top-of-the-atmosphere radiances. It does not provide an accurate temperature of either clouds or the land surface, but it does show relative temperature differences which can be used to distinguish features both in clouds and over clear land. It can be used to distinguish land, sea ice, and open water over the polar regions during winter (in cloudless areas).

The MODIS Brightness Temperature layer is calculated from MODIS Calibrated Radiances and is available from both the Terra (MOD02) and Aqua (MYD02) satellites. The sensor and imagery resolution is 1 km, and the temporal resolution is daily.

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The Sentinel-3A Orbital Track & Overpass Time (Ascending/Night) layer is the path of the Sentinel-3A satellite on its ascending/night-time orbit. Overpass times are shown in Coordinated Universal Time (UTC).

Orbital Track information from <https://www.space-track.org/>.
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The Sentinel-3A Orbital Track & Overpass Time (Descending/Day) layer is the path of the Sentinel-3A satellite on its descending/day-time orbit. Overpass times are shown in Coordinated Universal Time (UTC).

Orbital Track information from <https://www.space-track.org/>.
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The Sentinel-3B Orbital Track & Overpass Time (Ascending/Night) layer is the path of the Sentinel-3B satellite on its ascending/night-time orbit. Overpass times are shown in Coordinated Universal Time (UTC).

Orbital Track information from <https://www.space-track.org/>.
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The Sentinel-3B Orbital Track & Overpass Time (Descending/Day) layer is the path of the Sentinel-3B satellite on its descending/day-time orbit. Overpass times are shown in Coordinated Universal Time (UTC).

Orbital Track information from <https://www.space-track.org/>.
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The VIIRS Brightness Temperature (Band I5, Day) layer is the brightness temperature, measured in Kelvin (K), calculated from the top-of-the-atmosphere radiances. It does not provide an accurate temperature of either clouds nor the land surface, but it does show relative temperature differences which can be used to distinguish features both in clouds and over clear land. It can be used to distinguish land, sea ice, and open water over the polar regions during winter (in cloudless areas).
The VIIRS Brightness Temperature (Band I5, Day) layer is the brightness temperature, measured in Kelvin (K), calculated from the top-of-the-atmosphere radiances. It does not provide an accurate temperature of either clouds or the land surface, but it does show relative temperature differences which can be used to distinguish features both in clouds and over clear land. It can be used to distinguish land, sea ice, and open water over the polar regions during winter (in cloudless areas).

The VIIRS Brightness Temperature layer is calculated from VIIRS Calibrated Radiances. The VIIRS instrument is aboard the joint NASA/NOAA NOAA-20 (JPSS-1) satellite. The sensor resolution is 375m, the imagery resolution is 250m, and the temporal resolution is daily.

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The VIIRS Brightness Temperature (Band I5, Night) layer is the brightness temperature, measured in Kelvin (K), calculated from the top-of-the-atmosphere radiances. It does not provide an accurate temperature of either clouds nor the land surface, but it does show relative temperature differences which can be used to distinguish features both in clouds and over clear land. It can be used to distinguish land, sea ice, and open water over the polar regions during winter (in cloudless areas).
The VIIRS Brightness Temperature (Band I5, Night) layer is the brightness temperature, measured in Kelvin (K), calculated from the top-of-the-atmosphere radiances. It does not provide an accurate temperature of either clouds or the land surface, but it does show relative temperature differences which can be used to distinguish features both in clouds and over clear land. It can be used to distinguish land, sea ice, and open water over the polar regions during winter (in cloudless areas).

The VIIRS Brightness Temperature layer is calculated from VIIRS Calibrated Radiances. The VIIRS instrument is aboard the joint NASA/NOAA NOAA-20 (JPSS-1) satellite. The sensor resolution is 375m, the imagery resolution is 250m, and the temporal resolution is daily.

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The VIIRS Brightness Temperature (Band I5, Day) layer is the brightness temperature, measured in Kelvin (K), calculated from the top-of-the-atmosphere radiances. It does not provide an accurate temperature of either clouds or the land surface, but it does show relative temperature differences which can be used to distinguish features both in clouds and over clear land. It can be used to distinguish land, sea ice, and open water over the polar regions during winter (in cloudless areas).

The VIIRS Brightness Temperature layer is calculated from VIIRS Calibrated Radiances. The VIIRS instrument is aboard the joint NASA/NOAA NOAA-21 (JPSS-2) satellite. The sensor resolution is 375m, the imagery resolution is 250m, and the temporal resolution is daily.

Note: The Corrected Reflectance and the Thermal Band I5 imagery from NOAA-21/VIIRS will occasionally show a checkered pattern, especially over the respective polar areas. This is due to overlapping and superimposition of observations from multiple orbits with widely different cloud/snow coverages. The checkered pattern may also arise from the mixture of partial day and night observations. Though all necessary steps have been taken to mitigate this effect, users may still notice this to some extent over the polar areas, depending on the season.

References: VJ203IMG_NRT [doi:10.5067/VIIRS/VJ203IMG_NRT.002](https://doi.org/10.5067/VIIRS/VJ203IMG_NRT.002); VJ202IMG_NRT [doi:10.5067/VIIRS/VJ202IMG_NRT.002](https://doi.org/10.5067/VIIRS/VJ202IMG_NRT.002)
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The VIIRS Brightness Temperature (Band I5, Night) layer is the brightness temperature, measured in Kelvin (K), calculated from the top-of-the-atmosphere radiances. It does not provide an accurate temperature of either clouds or the land surface, but it does show relative temperature differences which can be used to distinguish features both in clouds and over clear land. It can be used to distinguish land, sea ice, and open water over the polar regions during winter (in cloudless areas).

The VIIRS Brightness Temperature layer is calculated from VIIRS Calibrated Radiances. The VIIRS instrument is aboard the joint NASA/NOAA NOAA-21 (JPSS-2) satellite. The sensor resolution is 375m, the imagery resolution is 250m, and the temporal resolution is daily.

Note: The Corrected Reflectance and the Thermal Band I5 imagery from NOAA-21/VIIRS will occasionally show a checkered pattern, especially over the respective polar areas. This is due to overlapping and superimposition of observations from multiple orbits with widely different cloud/snow coverages. The checkered pattern may also arise from the mixture of partial day and night observations. Though all necessary steps have been taken to mitigate this effect, users may still notice this to some extent over the polar areas, depending on the season.

References: VJ203IMG_NRT [doi:10.5067/VIIRS/VJ203IMG_NRT.002](https://doi.org/10.5067/VIIRS/VJ203IMG_NRT.002); VJ202IMG_NRT [doi:10.5067/VIIRS/VJ202IMG_NRT.002](https://doi.org/10.5067/VIIRS/VJ202IMG_NRT.002)
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False Color: Red = M11, Green = I2, Blue = I1

This combination is most useful for distinguishing burn scars from naturally low vegetation or bare soil and enhancing floods.

This combination can also be used to distinguish snow and ice from clouds. Snow and ice are very reflective in the visible part of the spectrum (Band I1), and absorbent in Bands I2 (near infrared) and M11 (short-wave infrared, or SWIR). Thick ice and snow appear vivid sky blue, while small ice crystals in high-level clouds will also appear blueish, and water clouds will appear white.

The Visible Infrared Imaging Radiometer Suite (VIIRS) Corrected Reflectance imagery is available only as near real-time imagery. The VIIRS instrument is aboard the joint NASA/NOAA NOAA-20 (JPSS-1) satellite. The imagery can be visualized in Worldview and the Global Imagery Browse Services (GIBS).The sensor resolution is 750 m and 375 m (M Bands are 750 m, I Bands are 375 m), imagery resolution is 250 m, and the temporal resolution is daily.

#### Vegetation and bare ground
Vegetation is very reflective in the near infrared (Band I2), and absorbent in Band I1 and Band M11. Assigning that band to green means even the smallest hint of vegetation will appear bright green in the image. Naturally bare soil, like a desert, is reflective in all bands used in this image, but more so in the SWIR (Band M11, red) and so soils will often have a pinkish tinge.

#### Burned areas
Burned areas or fire-affected areas are characterized by deposits of charcoal and ash, removal of vegetation and/or the alteration of vegetation structure. When bare soil becomes exposed, the brightness in Band I1 may increase, but that may be offset by the presence of black carbon residue; the near infrared (Band I2) will become darker, and Band M11 becomes more reflective. When assigned to red in the image, Band M11 will show burn scars as deep or bright red, depending on the type of vegetation burned, the amount of residue, or the completeness of the burn.

#### Water
Liquid water on the ground appears very dark since it absorbs in the red and the SWIR. Sediments in water appear dark blue. Ice and snow appear as bright turquoise. Clouds comprised of small water droplets scatter light equally in both the visible and the SWIR and will appear white. These clouds are usually lower to the ground and warmer. High and cold clouds are comprised of ice crystals and will appear turquoise.

Note: The Corrected Reflectance and the Thermal Band I5 imagery from NOAA-21/VIIRS will occasionally show a checkered pattern, especially over the respective polar areas. This is due to overlapping and superimposition of observations from multiple orbits with widely different cloud/snow coverages. The checkered pattern may also arise from the mixture of partial day and night observations. Though all necessary steps have been taken to mitigate this effect, users may still notice this to some extent over the polar areas, depending on the season.

References: VJ203MOD_NRT [doi:10.5067/VIIRS/VJ103MOD_NRT.002](https://doi.org/10.5067/VIIRS/VJ203IMG_NRT.002); VJ203IMG_NRT [doi:10.5067/VIIRS/VJ103IMG_NRT.002](https://doi.org/10.5067/VIIRS/VJ203MOD_NRT.002);
VJ202MOD_NRT [doi:10.5067/VIIRS/VJ102MOD_NRT.002](https://doi.org/10.5067/VIIRS/VJ202MOD_NRT.002); VJ202IMG_NRT [doi:10.5067/VIIRS/VJ102IMG_NRT.002](https://doi.org/10.5067/VIIRS/VJ202IMG_NRT.002)
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False Color: Red = M3, Green = I3, Blue = M11

This combination is used to map snow and ice. Snow and ice are very reflective in the visible part of the spectrum (Band M3), and very absorbent in Bands I3 and M11 (short-wave infrared, or SWIR). This band combination is good for distinguishing liquid water from frozen water, for example, clouds over snow, ice cloud versus water cloud; or floods from dense vegetation.

The Visible Infrared Imaging Radiometer Suite (VIIRS) Corrected Reflectance imagery is available only as near real-time imagery. The VIIRS instrument is aboard the joint NASA/NOAA NOAA-20 (JPSS-1) satellite. The imagery can be visualized in Worldview and the Global Imagery Browse Services (GIBS). The sensor resolution is 750 m and 375 m (M Bands are 750 m, I Bands are 375 m), imagery resolution is 250 m, and the temporal resolution is daily.

#### Snow and Ice
Since the only visible light used in these images (Band M3) is assigned to red, snow and ice appear bright red. The more ice, the stronger the absorption in the SWIR bands, and the more red the color. Thick ice and snow appear vivid red (or dark pink), while small ice crystals in high-level clouds will appear pinkish.

#### Vegetation
Vegetation will appear green in this band combination, as vegetation is absorbent in Bands M3 and M11, but reflective in Band I3. Bare soil and deserts will appear bright cyan in the image since it much more reflective in Band I3 and M11 than Band M3.

#### Water
Liquid water on the ground will appear very dark since it absorbs in the red and the SWIR, but small liquid water drops in clouds scatter light equally in both the visible and the SWIR, and will therefore appear white. Sediments in water appear dark red.

Note: The Corrected Reflectance and the Thermal Band I5 imagery from NOAA-21/VIIRS will occasionally show a checkered pattern, especially over the respective polar areas. This is due to overlapping and superimposition of observations from multiple orbits with widely different cloud/snow coverages. The checkered pattern may also arise from the mixture of partial day and night observations. Though all necessary steps have been taken to mitigate this effect, users may still notice this to some extent over the polar areas, depending on the season.

References: VJ203MOD_NRT [doi:10.5067/VIIRS/VJ103MOD_NRT.002](https://doi.org/10.5067/VIIRS/VJ203IMG_NRT.002); VJ203IMG_NRT [doi:10.5067/VIIRS/VJ103IMG_NRT.002](https://doi.org/10.5067/VIIRS/VJ203MOD_NRT.002);
VJ202MOD_NRT [doi:10.5067/VIIRS/VJ102MOD_NRT.002](https://doi.org/10.5067/VIIRS/VJ202MOD_NRT.002); VJ202IMG_NRT [doi:10.5067/VIIRS/VJ102IMG_NRT.002](https://doi.org/10.5067/VIIRS/VJ202IMG_NRT.002)
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