Topic
Longitude
About: Longitude is a research topic. Over the lifetime, 2260 publications have been published within this topic receiving 54988 citations. The topic is also known as: angle of longitude.
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TL;DR: In this article, the optimum interpolation method was applied to a network of monthly mean surface air temperature at 370 stations to the north of 25°S, for 324 months from January 1951-December 1977.
Abstract: The optimum interpolation method, which allows ready estimates of the error of interpolation, is applied to a network of monthly mean surface air temperature at 370 stations to the north of 25°S, for 324 months from January 1951–December 1977 The temperature deviations from the 25-year mean at grid points on 30° longitude (45° longitude at 80°N only) and 10° latitude intersections are determined for each month From a set of these grid-point values, time series of longitudinal distributions at 60 and 30°N, and of spatial means over 30° latitudinal zones 90–60°N, 60–30°N and 30–0°N are given In addition 12- and 36-month running means of the Northern Hemisphere mean are presented, together with the 95% confidence limits for the error, which are estimated as less than 005 and 003°C, respectively Some significant fluctuations are noticed
13 citations
TL;DR: In this paper, a comparative study on the variation of total electron content was performed by using the observations from two GPS receivers located at magnetically conjugate stations near the equatorial ionization anomaly crests: Udaipur, India in the nortnern hemisphere and Diego Garcia in the southern hemisphere, located at approximately same geographic longitude.
13 citations
TL;DR: In this paper, a longitudinal comparison of electron content-latitude profiles at low latitudes obtained in East Asia and India from measurements of the Faraday rotation of transiting beacon satellite signals was made.
13 citations
TL;DR: Newly hatched sea turtles exposed to artificially generated magnetic fields with parameters characteristic of two sites 3700 km apart, differing only in longitude, can distinguish the two apparent locations and orient appropriately.
13 citations
TL;DR: In this article, shipboard measurements made in the regions of the South Atlantic anomaly at a geomagnetic latitude corresponding to L = 1.80 suggest the existence of a region of increased airglow activity near 67 deg Geomagnetic longitude.
Abstract: S>Shipboard measurements made in the regions of the South Atlantic anomaly at a geomagnetic latitude corresponding to L = 1.80 suggest the existence of a region of increased airglow activity near 67 deg geomagnetic longitude. An attempt is made to show that this anomaly is not temporal in nature nor due to the effects of high-altitude nuclear tests carried out during these measurements. The location of this anomaly borders on but does not pass through the magnetic and trapped particle anomalies as previously measured, and, although the results suggest that this anomaly is dependent on longitude, the quantity of data is limited and confirmatory measurements will be required to substantiate this conclusion. (auth)
13 citations