MOD11A2 V6.1 제품은 1200x1200km 그리드에서 평균 8일 지표면 온도(LST)를 제공합니다. MOD11A2의 각 픽셀 값은 해당 8일 기간 내에 수집된 모든 해당 MOD11A1 LST 픽셀의 단순 평균입니다. MOD11A2는 특정 QA 비트에 대한 필터링 없이 모든 일일 LST 값을 간단하게 평균합니다. 각 MOD11A2 QA 값은 지정된 픽셀의 대부분의 입력 일일 QA 값을 기반으로 설정됩니다.
8일 합성 기간은 이 기간의 두 배가 Terra 및 Aqua 플랫폼의 정확한 지상 트랙 반복 기간이기 때문에 선택되었습니다. 이 제품에는 주간 및 야간 표면 온도 밴드와 품질 표시기 (QC) 레이어뿐만 아니라 MODIS 밴드 31과 32, 8개의 관측 레이어도 포함되어 있습니다.
MOD11A2 V6.1 제품은 1,200x1,200km 그리드에서 평균 8일 지표면 온도 (LST)를 제공합니다. MOD11A2의 각 픽셀 값은 해당 8일 기간 내에 수집된 모든 해당 MOD11A1 LST 픽셀의 단순 평균입니다. MOD11A2는 모든 일일 …을 단순 평균합니다.
[null,null,[],[[["\u003cp\u003eMOD11A2 V6.1 provides an 8-day average land surface temperature (LST) globally at a 1km resolution.\u003c/p\u003e\n"],["\u003cp\u003eThe dataset includes day and night LST, quality indicators, emissivity, and observation view time/angle.\u003c/p\u003e\n"],["\u003cp\u003eData is derived from the MODIS instrument on the Terra satellite and composited over 8-day periods.\u003c/p\u003e\n"],["\u003cp\u003eThe dataset covers the period from February 18, 2000, to November 24, 2024.\u003c/p\u003e\n"],["\u003cp\u003eIt is freely available for use, with attribution to NASA LP DAAC at the USGS EROS Center.\u003c/p\u003e\n"]]],["The MOD11A2 V6.1 dataset from NASA LP DAAC/USGS EROS Center offers 8-day average land surface temperature (LST) data in a 1200x1200 km grid, from 2000-02-18 to 2025-02-10. It averages daily MOD11A1 LST pixels without filtering. The data includes day and night surface temperatures, quality indicators, emissivity bands (31 and 32), and observation layers, at 1000-meter pixel size. Accessible via Google Earth Engine using the provided snippet.\n"],null,["Dataset Availability\n: 2000-02-18T00:00:00Z--2025-08-21T00:00:00Z\n\nDataset Provider\n:\n\n\n [NASA LP DAAC at the USGS EROS Center](https://doi.org/10.5067/MODIS/MOD11A2.061)\n\nCadence\n: 8 Days\n\nTags\n:\n[8-day](/earth-engine/datasets/tags/8-day) [climate](/earth-engine/datasets/tags/climate) [emissivity](/earth-engine/datasets/tags/emissivity) [global](/earth-engine/datasets/tags/global) [lst](/earth-engine/datasets/tags/lst) [mod11a2](/earth-engine/datasets/tags/mod11a2) [modis](/earth-engine/datasets/tags/modis) [nasa](/earth-engine/datasets/tags/nasa) [surface-temperature](/earth-engine/datasets/tags/surface-temperature) [terra](/earth-engine/datasets/tags/terra) [usgs](/earth-engine/datasets/tags/usgs) \n\nDescription \nThe MOD11A2 V6.1 product provides an average 8-day land surface temperature\n(LST) in a 1200 x 1200 kilometer grid. Each pixel value in MOD11A2 is a\nsimple average of all the corresponding MOD11A1 LST pixels collected within\nthat 8 day period. The MOD11A2 does a simple averaging of all daily LST\nvalues, without any filtering for specific QA bits. Each of the MOD11A2 QA\nvalues are set based on what majority of input daily QA values are for any\ngiven pixel.\n\nThe 8 day compositing period was chosen because twice that period is the\nexact ground track repeat period of the Terra and Aqua platforms. In this\nproduct, along with both the day- and night-time surface temperature bands\nand their quality indicator (QC) layers, are also MODIS bands 31 and 32 and\neight observation layers.\n\nDocumentation:\n\n- [User's Guide](https://lpdaac.usgs.gov/documents/118/MOD11_User_Guide_V6.pdf)\n\n- [Algorithm Theoretical Basis Document (ATBD)](https://lpdaac.usgs.gov/documents/119/MOD11_ATBD.pdf)\n\n- [General Documentation](https://ladsweb.modaps.eosdis.nasa.gov/filespec/MODIS/61/MOD11A2)\n\nBands\n\n\n**Pixel Size**\n\n1000 meters\n\n**Bands**\n\n| Name | Units | Min | Max | Scale | Offset | Pixel Size | Description |\n|--------------------|-------|------|-------|-------|--------|------------|----------------------------------------|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|\n| `LST_Day_1km` | K | 7500 | 65535 | 0.02 | | meters | Day land surface temperature |\n| `QC_Day` | | | | | | meters | Daytime LST quality indicators |\n| Bitmask for QC_Day - Bits 0-1: Mandatory QA flags - 0: Pixel produced, good quality, not necessary to examine more detailed QA - 1: Pixel produced, unreliable or unquantifiable quality, recommend examination of more detailed QA - 2: Pixel not produced due to cloud effects - 3: Pixel not produced primarily due to reasons other than cloud (such as ocean pixel, poor input data) - Bits 2-3: Data quality flag - 0: Good data quality - 1: Other quality data - 2: TBD - 3: TBD - Bits 4-5: Emissivity error flag - 0: Average emissivity error \\\u003c= 0.01 - 1: Average emissivity error \\\u003c= 0.02 - 2: Average emissivity error \\\u003c= 0.04 - 3: Average emissivity error \\\u003e 0.04 - Bits 6-7: LST error flag - 0: Average LST error \\\u003c= 1K - 1: Average LST error \\\u003c= 2K - 2: Average LST error \\\u003c= 3K - 3: Average LST error \\\u003e 3K ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||\n| `Day_view_time` | h | 0 | 240 | 0.1 | | meters | Local time of day observation |\n| `Day_view_angl` | deg | 0 | 130 | | -65 | meters | View zenith angle of day observation |\n| `LST_Night_1km` | K | 7500 | 65635 | 0.02 | | meters | Night land surface temperature |\n| `QC_Night` | | | | | | meters | Nighttime LST quality indicators |\n| Bitmask for QC_Night - Bits 0-1: Mandatory QA flags - 0: Pixel produced, good quality, not necessary to examine more detailed QA - 1: Pixel produced, unreliable or unquantifiable quality, recommend examination of more detailed QA - 2: Pixel not produced due to cloud effects - 3: Pixel not produced primarily due to reasons other than cloud (such as ocean pixel, poor input data) - Bits 2-3: Data quality flag - 0: Good data quality - 1: Other quality data - 2: TBD - 3: TBD - Bits 4-5: Emissivity error flag - 0: Average emissivity error \\\u003c= 0.01 - 1: Average emissivity error \\\u003c= 0.02 - 2: Average emissivity error \\\u003c= 0.04 - 3: Average emissivity error \\\u003e 0.04 - Bits 6-7: LST error flag - 0: Average LST error \\\u003c= 1K - 1: Average LST error \\\u003c= 2K - 2: Average LST error \\\u003c= 3K - 3: Average LST error \\\u003e 3K ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||\n| `Night_view_time` | h | 0 | 240 | 0.1 | | meters | Local time of night observation |\n| `Night_view_angl` | deg | 0 | 130 | | -65 | meters | View zenith angle of night observation |\n| `Emis_31` | | 1 | 255 | 0.002 | 0.49 | meters | Band 31 emissivity |\n| `Emis_32` | | 1 | 255 | 0.002 | 0.49 | meters | Band 32 emissivity |\n| `Clear_sky_days` | | | | | | meters | Days in clear-sky conditions |\n| Bitmask for Clear_sky_days - Bit 0: Day 1 clear sky flag - 0: Day 1 is not clear-sky - 1: Day 1 is clear-sky - Bit 1: Day 2 clear sky flag - 0: Day 2 is not clear-sky - 1: Day 2 is clear-sky - Bit 2: Day 3 clear sky flag - 0: Day 3 is not clear-sky - 1: Day 3 is clear-sky - Bit 3: Day 4 clear sky flag - 0: Day 4 is not clear-sky - 1: Day 4 is clear-sky - Bit 4: Day 5 clear sky flag - 0: Day 5 is not clear-sky - 1: Day 5 is clear-sky - Bit 5: Day 6 clear sky flag - 0: Day 6 is not clear-sky - 1: Day 6 is clear-sky - Bit 6: Day 7 clear sky flag - 0: Day 7 is not clear-sky - 1: Day 7 is clear-sky - Bit 7: Day 8 clear sky flag - 0: Day 8 is not clear-sky - 1: Day 8 is clear-sky ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||\n| `Clear_sky_nights` | | | | | | meters | Nights in clear-sky conditions |\n| Bitmask for Clear_sky_nights - Bit 0: Night 1 clear sky flag - 0: Night 1 is not clear-sky - 1: Night 1 is clear-sky - Bit 1: Night 2 clear sky flag - 0: Night 2 is not clear-sky - 1: Night 2 is clear-sky - Bit 2: Night 3 clear sky flag - 0: Night 3 is not clear-sky - 1: Night 3 is clear-sky - Bit 3: Night 4 clear sky flag - 0: Night 4 is not clear-sky - 1: Night 4 is clear-sky - Bit 4: Night 5 clear sky flag - 0: Night 5 is not clear-sky - 1: Night 5 is clear-sky - Bit 5: Night 6 clear sky flag - 0: Night 6 is not clear-sky - 1: Night 6 is clear-sky - Bit 6: Night 7 clear sky flag - 0: Night 7 is not clear-sky - 1: Night 7 is clear-sky - Bit 7: Night 8 clear sky flag - 0: Night 8 is not clear-sky - 1: Night 8 is clear-sky ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||\n\nTerms of Use\n\n**Terms of Use**\n\nMODIS data and products acquired through the LP DAAC\nhave no restrictions on subsequent use, sale, or redistribution.\n\nCitations \nCitations:\n\n- Please visit [LP DAAC 'Citing Our Data' page](https://lpdaac.usgs.gov/citing_our_data)\n for information on citing LP DAAC datasets.\n\nDOIs\n\n- \u003chttps://doi.org/10.5067/MODIS/MOD11A2.061\u003e\n\nExplore with Earth Engine **Important:** Earth Engine is a platform for petabyte-scale scientific analysis and visualization of geospatial datasets, both for public benefit and for business and government users. Earth Engine is free to use for research, education, and nonprofit use. To get started, please [register for Earth Engine access.](https://console.cloud.google.com/earth-engine)\n\nCode Editor (JavaScript) \n\n```javascript\nvar dataset = ee.ImageCollection('MODIS/061/MOD11A2')\n .filter(ee.Filter.date('2018-01-01', '2018-05-01'));\nvar landSurfaceTemperature = dataset.select('LST_Day_1km');\nvar landSurfaceTemperatureVis = {\n min: 14000.0,\n max: 16000.0,\n palette: [\n '040274', '040281', '0502a3', '0502b8', '0502ce', '0502e6',\n '0602ff', '235cb1', '307ef3', '269db1', '30c8e2', '32d3ef',\n '3be285', '3ff38f', '86e26f', '3ae237', 'b5e22e', 'd6e21f',\n 'fff705', 'ffd611', 'ffb613', 'ff8b13', 'ff6e08', 'ff500d',\n 'ff0000', 'de0101', 'c21301', 'a71001', '911003'\n ],\n};\nMap.setCenter(6.746, 46.529, 2);\nMap.addLayer(\n landSurfaceTemperature, landSurfaceTemperatureVis,\n 'Land Surface Temperature');\n```\n[Open in Code Editor](https://code.earthengine.google.com/?scriptPath=Examples:Datasets/MODIS/MODIS_061_MOD11A2) \n[MOD11A2.061 Terra Land Surface Temperature and Emissivity 8-Day Global 1km](/earth-engine/datasets/catalog/MODIS_061_MOD11A2) \nThe MOD11A2 V6.1 product provides an average 8-day land surface temperature (LST) in a 1200 x 1200 kilometer grid. Each pixel value in MOD11A2 is a simple average of all the corresponding MOD11A1 LST pixels collected within that 8 day period. The MOD11A2 does a simple averaging of all daily ... \nMODIS/061/MOD11A2, 8-day,climate,emissivity,global,lst,mod11a2,modis,nasa,surface-temperature,terra,usgs \n2000-02-18T00:00:00Z/2025-08-21T00:00:00Z \n-90 -180 90 180 \nGoogle Earth Engine \nhttps://developers.google.com/earth-engine/datasets\n\n- [https://doi.org/10.5067/MODIS/MOD11A2.061](https://doi.org/https://doi.org/10.5067/MODIS/MOD11A2.061)\n- [https://doi.org/10.5067/MODIS/MOD11A2.061](https://doi.org/https://developers.google.com/earth-engine/datasets/catalog/MODIS_061_MOD11A2)"]]
