The reason such an effort is needed lies in the nature of the observing network itself. Surface meteorological stations are the workhorses of climate-change detection, attribution, and impact studies, and they also serve as the yardsticks against which satellite remote-sensing retrievals and climate model simulations are evaluated. But these stations are not pristine instruments floating above history. Observing instruments are continuously upgraded and replaced, and different instruments carry different biases. When a thermometer design changes or a humidity sensor is swapped for a newer model, the recorded values can shift for reasons that have nothing to do with the atmosphere. These artificial changes, known as inhomogeneities, contaminate the very records scientists rely on to detect long-term climate signals.

In principle, observational data are expected to represent large-scale climate-change signals on the order of 100 kilometers or more. Yet changes in the local environment surrounding a station, most notably urbanization, can be superimposed on those large-scale signals. To accurately detect and attribute climate change, the effects of non-climatic factors and local environmental changes must be removed as much as possible. Some of these effects are comparatively easy to handle. Abrupt changes caused by station relocations and instrument replacements tend to be large and can usually be detected and corrected through conventional homogenization techniques. The harder problem is the slow one: changes in the observing environment around a station are often gradual, and each individual change has only a small effect on the observations, making it extremely difficult to identify and correct. Over decades, however, these small effects accumulate into systematic biases that can significantly distort estimates of climate-change trends and even undermine the reliability of detection and attribution studies.

Traditional homogenization methods generally rely on comparisons with neighboring stations. A set of reference stations with similar elevation and reliable data quality is selected around a target station, and possible inhomogeneities are identified by comparing their time series. The logic is sound when the neighbors are clean. But when many stations in a region are simultaneously affected by instrument sensitivity drift, instrument replacement, urbanization, and other factors, the reference stations themselves may contain inhomogeneities. In that case, the method can miss the very signals it is designed to find, and its ability to detect both gradual and abrupt inhomogeneities becomes limited. This is precisely the situation across much of China, where the national station network has undergone sweeping technological and environmental change over the past sixty years.

To break this deadlock, Wang’s team spent more than a decade developing a homogenization method based on same-station comparison. Instead of leaning on neighboring stations that may share the same hidden biases, the approach overcomes key difficulties in detecting and correcting gradual inhomogeneities, and it enables the detection and correction of both gradual and abrupt inhomogeneities in China’s land-surface climate observations. The variables it covers are the essential ones for climate monitoring: surface solar radiation, wind speed, relative humidity, air temperature, ground temperature, and precipitation. The method provides the technical backbone for building high-quality climate datasets for China, and HCD01 is the first major product of that backbone.

The corrections the team uncovered are striking, and they change how several well-known features of China’s climate record should be interpreted. Before 1990, strict calibration instruments and procedures were lacking, and gradual inhomogeneity caused by instrument sensitivity drift crept into China’s surface solar radiation observations. The consequence is significant: the widely reported decreasing trend in surface solar radiation during 1960 to 1990 was seriously overestimated. Then, during 1990 to 1993, instrument updates caused a sudden increase in the observations, an artificial step that had nothing to do with the sun or the clouds. In other words, part of the famous global dimming and brightening story as recorded over China was an artifact of the instruments rather than the atmosphere.

The twenty-first century brought a different kind of discontinuity. China’s meteorological observations began shifting from manual to automatic observation, and the greatest impact fell on relative humidity. Under conditions of low near-surface wind speed, the dry- and wet-bulb thermometers used in manual observations tended to overestimate relative humidity, whereas the capacitive sensors used in automatic observations did not have this problem. The transition between the two methods therefore produced a false decreasing trend in relative humidity observations in the twenty-first century, a trend that reflects changing hardware rather than a drying atmosphere. Correcting this bias matters enormously, because relative humidity feeds directly into calculations of evaporation, heat stress, and the behavior of the hydrological cycle.

Urbanization left its own fingerprints on the record. The growth of cities around meteorological stations amplified the observed warming trend of daily minimum temperature, since urban surfaces store and release heat differently than the rural landscapes that once surrounded the stations. Urbanization also increased surface roughness, which reduced near-surface wind speed as measured at those sites. Meanwhile, relocations of meteorological stations from urban to rural areas caused abrupt increases in observed wind speed, the opposite artifact. The team notes that although the decline in station-observed near-surface wind speed does not represent large-scale change, it does reflect real changes in near-surface wind speed at the observing sites themselves, and it affects station precipitation observations, since wind influences how effectively rain gauges catch falling precipitation.

Cleaning the station records, however, is only half the battle. Homogenized station observations alone remain insufficient for climate-change research because observing stations are sparse and unevenly distributed across China, and because observation periods differ among stations. That makes direct spatiotemporal analysis at the national scale difficult. To solve this, the team merged the homogenized station observations with ERA5-Land reanalysis data to construct HCD01, providing complete spatial coverage at a daily, 0.1-degree resolution for 1961 through 2022. The results show that HCD01 clearly improves the representation of long-term trends compared with both reanalysis data alone and raw observations, offering a high-quality data basis for studies of regional climate change and its impacts across China.

The study was led by Professor Kaicun Wang, who served as first author and corresponding author. The research team included current graduate students Hongze Cai, Yun Li, Hanmeng Xia, and Changjian Yin from Wang’s group, along with former graduate students including Professor Chunlue Zhou and Associate Professor Yanyi He, both of Sun Yat-sen University, Young Researcher Zhengtai Zhang of Lanzhou University, and Dr. Runze Zhao of the National Satellite Meteorological Center of the China Meteorological Administration. The work was supported by the National Key Research and Development Program of China and the Science and Technology Program of Guizhou Province. With HCD01 now openly available, researchers studying everything from agricultural water demand to solar energy potential in China have access to a climate record in which the instruments, the cities, and the station moves have been carefully accounted for, leaving the climate signal standing on its own.

Subject of Research: Homogenization of Chinese meteorological station records and construction of a gridded climate dataset

Article Title: Peking University team releases homogenized gridded climate dataset for China

Article References: Peking University team releases homogenized gridded climate dataset for China. (n.d.). Original publication

Image Credits: AI Generated

DOI: Not provided

Keywords: climate dataset, homogenization, China, meteorological stations, solar radiation, relative humidity, urbanization, ERA5-Land, reanalysis, climate change detection, Peking University, Science China Earth Sciences

CTIT is a common and clinically consequential hematologic toxicity in patients with solid tumors. Chemotherapy, radiotherapy, and targeted agents can all suppress the bone marrow’s ability to produce platelets, the small cell fragments that form clots and prevent hemorrhage. When platelet counts fall below safe thresholds, oncologists are frequently forced to postpone or reduce doses of anti-cancer drugs, compromising the very treatment meant to control the tumor. In severe cases, spontaneous bleeding can become life-threatening. Platelet transfusions and standard TPO-RA monotherapy help many patients, but a subset remains refractory, with counts that stay dangerously low despite every conventional measure.

The research team, led by Lin-Ya Wang and Fei-Fei Tang of the Peking University Institute of Hematology, set out to test whether adding ATRA to continued TPO-RA therapy could break through this resistance. Their rationale rests on platelet biology: TPO-RAs such as eltrombopag and romiplostim stimulate thrombopoietin receptors on megakaryocytes, the large bone marrow cells that shed platelets into the bloodstream, while ATRA is thought to promote megakaryocyte maturation and platelet production through complementary pathways, including retinoid signaling and effects on the bone marrow microenvironment. Combining the two agents, the investigators reasoned, might attack the problem from two directions at once.

The study retrospectively analyzed 28 patients with refractory CTIT, defined as grade 2 or worse thrombocytopenia according to the CTCAE v5.0 criteria despite prior TPO-RA therapy. All patients were treated at Peking University People’s Hospital between August 2023 and May 2025. Each received oral ATRA at a dose of 25 milligrams per square meter of body surface area daily for six weeks, alongside continued TPO-RA treatment. The severity of the starting condition was sobering: the median baseline platelet count was just 13 × 10⁹ per liter, with individual values ranging from a perilous 2 × 10⁹ to 69 × 10⁹ per liter. Counts at that level leave patients exposed to serious bleeding risk and effectively rule out continued cancer therapy.

The results were unambiguous. Platelet counts climbed steadily from baseline after treatment began, with median elevations of +17 × 10⁹ per liter by day 14 (P = 3.05 × 10⁻⁵), +36 × 10⁹ per liter by day 28 (P = 9.54 × 10⁻⁷), and +59 × 10⁹ per liter by day 42 (P = 7.45 × 10⁻⁹). By the end of the observation window, the median patient had gained nearly five times their starting platelet count. Twelve patients, or 42.9 percent, achieved a complete response, defined as recovery to normal platelet levels, while another seven patients, 25.0 percent, achieved a partial response. The overall response rate stood at 67.9 percent, meaning roughly two of every three patients who had failed standard therapy regained usable platelet counts. The median time to complete response was 31 days, with responses occurring as early as 12 days and as late as 40 days after starting the combination.

Safety data were equally encouraging. ATRA is not a benign molecule; it carries known risks of liver enzyme elevation, headache, and, in the setting of acute promyelocytic leukemia, a potentially dangerous complication called differentiation syndrome. Yet in this population, the combination was well tolerated. Only four patients, 14.3 percent, developed elevated liver enzymes, three of them grade 1 and one grade 2, and three patients, 10.7 percent, experienced mild, grade 1 nausea. Critically, no grade 3 or higher adverse events were recorded, no thrombotic events occurred, and no patient developed differentiation syndrome. For a drug that stimulates platelet production, the absence of clotting complications is a particularly important signal, since raising platelet counts in cancer patients could theoretically tip the balance toward thrombosis.

The study also uncovered intriguing patterns in who responded best. Within the female cohort, patients with tumors of the female reproductive system responded significantly more poorly than those with other cancers: their overall response rate was 57.1 percent compared with 100.0 percent for non-FRS tumors (P = 0.038), and none of the FRS tumor patients achieved a complete response versus 70.0 percent of the others (P = 0.008). The authors also noted trends toward inferior complete response rates among patients with a history of radiotherapy (P = 0.057) and those treated with paclitaxel (P = 0.054), neither of which reached statistical significance in this small sample. These signals suggest that the biology of refractory CTIT may differ depending on the tumor type and prior treatment exposures, and that certain patient groups may need alternative or intensified strategies.

One of the most mechanistically revealing findings involved the bone marrow itself. Patients whose baseline bone marrow biopsies showed higher megakaryocyte counts, at least five per high-powered field, exhibited a trend toward higher overall response rates compared with those with lower counts, 76.5 percent versus 54.5 percent, though the difference did not reach statistical significance (P = 0.41). The observation makes biological sense: megakaryocytes are the cellular factories of platelets, and a marrow that retains a reasonable supply of these cells is more likely to respond to drugs that push them into overdrive. Conversely, patients whose marrows have been devastated by chemotherapy or radiotherapy may lack the raw cellular substrate needed for any platelet-boosting strategy to succeed. If confirmed in larger cohorts, megakaryocyte counts could help clinicians identify which refractory patients are most likely to benefit from the ATRA-plus-TPO-RA combination before committing to six weeks of therapy.

The study’s design demands careful interpretation. As a retrospective, single-center analysis of 28 patients, it cannot rule out selection bias, and without a randomized control group it is impossible to say with certainty how many patients would have recovered on continued TPO-RA monotherapy alone. The authors themselves frame the work as hypothesis-generating. Nevertheless, the magnitude and tempo of the platelet recoveries, the near-complete absence of serious toxicity, and the internal consistency of the response kinetics give the findings considerable weight. A prospective randomized trial will be needed before the combination can be recommended as standard of care, but for a population with essentially no good options, the bar for moving forward is low.

The broader significance extends beyond one drug pairing. CTIT is becoming an increasingly visible problem as cancer therapy grows more intensive and as patients live longer with advanced disease, and refractory cases consume transfusion resources while delaying tumor-directed treatment. The Peking University study suggests that rational combinations of agents targeting different nodes of thrombopoiesis, in this case retinoid-driven megakaryocyte maturation layered on top of thrombopoietin receptor stimulation, can rescue patients who were previously written off. It also revives interest in ATRA, a decades-old leukemia drug, as a repurposed agent in supportive oncology. If larger trials confirm these results, a cheap oral vitamin A derivative could become a standard partner for platelet-boosting drugs, keeping cancer treatment on schedule for thousands of patients whose platelets, and whose therapies, currently run out of road.

Subject of Research: Combination therapy with all-trans retinoic acid and thrombopoietin receptor agonists for refractory cancer therapy-induced thrombocytopenia

Article Title: All-trans retinoic acid combined with thrombopoietin receptor agonists for refractory cancer therapy-induced thrombocytopenia: a retrospective single-center study

Article References: Wang, L.-Y., Gao, H.-T., Fu, Q., Xu, L.-P., Zhang, X.-H., Huang, X.-J., & Tang, F.-F. (2026). All-trans retinoic acid combined with thrombopoietin receptor agonists for refractory cancer therapy-induced thrombocytopenia: a retrospective single-center study. Annals of Hematology. https://doi.org/10.1007/s00277-026-07287-4

Image Credits: AI Generated

DOI: 10.1007/s00277-026-07287-4

Keywords: all-trans retinoic acid, thrombopoietin receptor agonists, cancer therapy-induced thrombocytopenia, platelets, megakaryocytes, solid tumors, hematology, chemotherapy toxicity, Peking University, retrospective study, thrombopoiesis, drug safety

The study, conducted by Ningning Ma of the Department of Sociology at Peking University, analyses the public defence speeches required of finalists for a prestigious undergraduate award at a leading Chinese research university. Using qualitative narrative analysis, Ma treats these speeches not as incidental ceremony but as the decisive mechanism through which student achievement is converted into institutional legitimacy. The findings suggest that in elite higher education, being excellent is not enough; a student must also be able to tell a particular kind of story about how that excellence came to be.

Across disciplines and across the seven years of speeches examined, Ma found that candidates relied on a strikingly consistent narrative arc. The story almost always begins with struggle, ordinariness, or even failure: an unremarkable entrance, early academic difficulty, or a period of uncertainty. What follows is a transformation, achieved not through raw talent alone but through institutional opportunities, mentorship, and structured cultivation provided by the university. The arc concludes with certified achievement, typically marked by international publications, conference presentations, and overseas exchange experiences. Excellence, in this telling, is the outcome of a journey that the institution itself made possible.

This framing has significant implications for how merit is understood. Rather than presenting ability as innate or self-generated, finalists consistently positioned themselves as products of institutional cultivation. The university appears in these narratives as the enabling environment without which individual potential would never mature into recognised accomplishment. In doing so, candidates simultaneously demonstrate humility and affirm the value of the very institution judging them, a rhetorical move that aligns the award winner’s success with the university’s own mission and reputation.

Yet the study shows that listing achievements is not sufficient on its own. International publications, conferences, and study-abroad experiences featured prominently in nearly every defence speech, but candidates rarely presented them as ends in themselves. Instead, these markers of global academic mobility were consistently reframed through narratives of responsibility, contribution, and public value. A publication became evidence of a commitment to advancing knowledge for society; an overseas exchange became a story of bringing back perspectives to serve the home country and community. The evaluative logic, Ma argues, rewards not only demonstrated capability but the ability to present oneself as reliable, socially responsible, and institutionally aligned.

Ma develops the concept of narrative certification to describe this process. Award defences, in this view, function as institutional rituals of certification, comparable in analytical terms to the rituals of verification that scholars of audit culture have identified in universities worldwide. Through the defence, three qualities are validated: cultivability, meaning the candidate can be shown to have been shaped and improved by the institution; comparability, meaning achievements can be ranked and judged against those of peers; and reliability, meaning the candidate can be trusted to embody the values the institution wishes to project. Only trajectories that satisfy these three conditions become recognisable as legitimate forms of excellence.

The concept draws on a rich theoretical tradition. Ma’s analysis engages with Foucauldian ideas of discipline and governmentality, in which subjects are shaped to govern themselves according to institutional norms, and with sociological work on audit culture and rankings, which has shown how public measures do not simply describe social worlds but actively recreate them. Just as university rankings change the behaviour of the institutions they measure, the scholarship defence changes the kinds of students the university produces, encouraging candidates to internalise and perform the narrative forms that the evaluation process rewards.

One of the study’s most notable findings concerns humanities and social science students. Although they were well represented among the finalists, their recognition often depended on demonstrating instrumental relevance and broader social contribution. In an evaluation environment dominated by metrics designed with the natural sciences in mind, such as international publications and conference participation, students in less quantifiable fields had to work harder to translate their achievements into the shared narrative currency of public value. Their success in the defence process, Ma suggests, reveals how institutional recognition can quietly discipline entire disciplines into adopting the evaluative frames of more metric-friendly fields.

The research also situates the Chinese case within the global rise of world-class university projects. Scholars have long debated how elite universities in East Asia blend Confucian traditions of moral cultivation with Western models of research excellence and global competition. The defence speeches analysed in this study embody that blend: candidates celebrate international visibility and global metrics while simultaneously framing their achievements as service to national and social purposes. The result is a distinctive model of excellence in which global ambition and public responsibility are narrated as inseparable, reflecting broader tensions and aspirations in Chinese higher education policy.

Methodologically, the study demonstrates the value of treating institutional documents as active social artefacts rather than passive records. By analysing publicly available defence speeches over seven years, Ma captures a recurring, formalised performance whose conventions remain stable across cohorts of students. Because the study relies on public institutional materials and involves no direct interaction with human participants, it also raises relatively few ethical concerns, while offering a template for researchers elsewhere who wish to examine how their own institutions certify merit. The broader lesson extends well beyond a single Chinese university: wherever scholarships, prizes, and honours are awarded through formal defence or interview processes, excellence is being narratively constructed, and understanding those narratives is essential to understanding how elite status is made, maintained, and legitimised in modern higher education.

Subject of Research: Narrative certification of student excellence in scholarship defence processes at an elite Chinese university

Article Title: Producing legible excellence: narrative certification in an elite Chinese university’s scholarship defence

Article References: Ma, N. (2026). Producing legible excellence: narrative certification in an elite Chinese university’s scholarship defence. Higher Education. https://doi.org/10.1007/s10734-026-01760-9

Image Credits: AI Generated

DOI: 10.1007/s10734-026-01760-9

Keywords: narrative certification, higher education, elite universities, audit culture, scholarship defence, elite formation, world-class universities, China, student evaluation, academic excellence, Peking University, qualitative narrative analysis